B32537B2685K - EPCOS (TDK)

Film Capacitors

Metallized Polyester Film Capacitors (MKT-S)

Series/Type: B32537

Date: May 2009

The following products presented in this data sheet are being withdrawn.

Ordering Code Substitute Product Date of

Withdrawal Deadline Last

Orders Last Shipments

B32537B8335J000 2012-10-19 2013-01-19 2013-04-19

B32537B8334K000 2012-10-19 2013-01-19 2013-04-19

B32537B8334J000 2012-10-19 2013-01-19 2013-04-19

information contained therein without EPCOS' prior express consent is prohibited.

EPCOS AG is a TDK Group Company.

Ordering Code Substitute Product Date of

Withdrawal Deadline Last

Orders Last Shipments

B32537B8333K000 2012-10-19 2013-01-19 2013-04-19

B32537B8333J000 2012-10-19 2013-01-19 2013-04-19

B32537B8225K000 2012-10-19 2013-01-19 2013-04-19

B32537B8225J000 2012-10-19 2013-01-19 2013-04-19

B32537B8224K000 2012-10-19 2013-01-19 2013-04-19

B32537B8224J000 2012-10-19 2013-01-19 2013-04-19

B32537B8155K000 2012-10-19 2013-01-19 2013-04-19

B32537B8155J000 2012-10-19 2013-01-19 2013-04-19

B32537B8154K000 2012-10-19 2013-01-19 2013-04-19

B32537B8154J000 2012-10-19 2013-01-19 2013-04-19

B32537B8105K000 2012-10-19 2013-01-19 2013-04-19

B32537B8105J000 2012-10-19 2013-01-19 2013-04-19

B32537B8104K000 2012-10-19 2013-01-19 2013-04-19

B32537B8104J000 2012-10-19 2013-01-19 2013-04-19

B32537B5685K000 2012-10-19 2013-01-19 2013-04-19

B32537B5685J000 2012-10-19 2013-01-19 2013-04-19

B32537B5684K000 2012-10-19 2013-01-19 2013-04-19

B32537B5684J000 2012-10-19 2013-01-19 2013-04-19

B32537B5475K000 2012-10-19 2013-01-19 2013-04-19

B32537B5475J000 2012-10-19 2013-01-19 2013-04-19

B32537B5474K000 2012-10-19 2013-01-19 2013-04-19

B32537B5474J000 2012-10-19 2013-01-19 2013-04-19

B32537B2106J000 2012-10-19 2013-01-19 2013-04-19

B32537B2106K000 2012-10-19 2013-01-19 2013-04-19

B32537B5335J000 2012-10-19 2013-01-19 2013-04-19

B32537B5335K000 2012-10-19 2013-01-19 2013-04-19

B32537B5225K000 2012-10-19 2013-01-19 2013-04-19

B32537B5225J000 2012-10-19 2013-01-19 2013-04-19

B32537B5155K000 2012-10-19 2013-01-19 2013-04-19

B32537B5155J000 2012-10-19 2013-01-19 2013-04-19

B32537B5106K000 2012-10-19 2013-01-19 2013-04-19

B32537B5106J000 2012-10-19 2013-01-19 2013-04-19

B32537B5105K000 2012-10-19 2013-01-19 2013-04-19

B32537B5105J000 2012-10-19 2013-01-19 2013-04-19

B32537B3685K000 2012-10-19 2013-01-19 2013-04-19

B32537B3685J000 2012-10-19 2013-01-19 2013-04-19

B32537B3684K000 2012-10-19 2013-01-19 2013-04-19

B32537B3684J000 2012-10-19 2013-01-19 2013-04-19

Ordering Code Substitute Product Date of

Withdrawal Deadline Last

Orders Last Shipments

B32537B3475K000 2012-10-19 2013-01-19 2013-04-19

B32537B3475J000 2012-10-19 2013-01-19 2013-04-19

B32537B3474K000 2012-10-19 2013-01-19 2013-04-19

B32537B3474J000 2012-10-19 2013-01-19 2013-04-19

B32537B3335K000 2012-10-19 2013-01-19 2013-04-19

B32537B3335J000 2012-10-19 2013-01-19 2013-04-19

B32537B3334K000 2012-10-19 2013-01-19 2013-04-19

B32537B3334J000 2012-10-19 2013-01-19 2013-04-19

B32537B3225K000 2012-10-19 2013-01-19 2013-04-19

B32537B3225J000 2012-10-19 2013-01-19 2013-04-19

B32537B3224K000 2012-10-19 2013-01-19 2013-04-19

B32537B3224J000 2012-10-19 2013-01-19 2013-04-19

B32537B3155K000 2012-10-19 2013-01-19 2013-04-19

B32537B3155J000 2012-10-19 2013-01-19 2013-04-19

B32537B3154K000 2012-10-19 2013-01-19 2013-04-19

B32537B3154J000 2012-10-19 2013-01-19 2013-04-19

B32537B3106K000 2012-10-19 2013-01-19 2013-04-19

B32537B3106J000 2012-10-19 2013-01-19 2013-04-19

B32537B3105K000 2012-10-19 2013-01-19 2013-04-19

B32537B3105J000 2012-10-19 2013-01-19 2013-04-19

B32537B3104K000 2012-10-19 2013-01-19 2013-04-19

B32537B3104J000 2012-10-19 2013-01-19 2013-04-19

B32537B2685K000 2012-10-19 2013-01-19 2013-04-19

B32537B2685J000 2012-10-19 2013-01-19 2013-04-19

B32537B2684K000 2012-10-19 2013-01-19 2013-04-19

B32537B2684J000 2012-10-19 2013-01-19 2013-04-19

B32537B2475K000 2012-10-19 2013-01-19 2013-04-19

B32537B2475J000 2012-10-19 2013-01-19 2013-04-19

B32537B2474K000 2012-10-19 2013-01-19 2013-04-19

B32537B2474J000 2012-10-19 2013-01-19 2013-04-19

B32537B2335K000 2012-10-19 2013-01-19 2013-04-19

B32537B2335J000 2012-10-19 2013-01-19 2013-04-19

B32537B2334K000 2012-10-19 2013-01-19 2013-04-19

B32537B2334J000 2012-10-19 2013-01-19 2013-04-19

B32537B2225K000 2012-10-19 2013-01-19 2013-04-19

B32537B2225J000 2012-10-19 2013-01-19 2013-04-19

B32537B2224K000 2012-10-19 2013-01-19 2013-04-19

B32537B2224J000 2012-10-19 2013-01-19 2013-04-19

Ordering Code Substitute Product Date of

Withdrawal Deadline Last

Orders Last Shipments

B32537B2155K000 2012-10-19 2013-01-19 2013-04-19

B32537B2155J000 2012-10-19 2013-01-19 2013-04-19

B32537B2154K000 2012-10-19 2013-01-19 2013-04-19

B32537B2154J000 2012-10-19 2013-01-19 2013-04-19

B32537B2105K000 2012-10-19 2013-01-19 2013-04-19

B32537B2105J000 2012-10-19 2013-01-19 2013-04-19

B32537B2104K000 2012-10-19 2013-01-19 2013-04-19

B32537B2104J000 2012-10-19 2013-01-19 2013-04-19

B32537B8684K000 2012-10-19 2013-01-19 2013-04-19

B32537B8684J000 2012-10-19 2013-01-19 2013-04-19

B32537B8683K000 2012-10-19 2013-01-19 2013-04-19

B32537B8683J000 2012-10-19 2013-01-19 2013-04-19

B32537B8475K000 2012-10-19 2013-01-19 2013-04-19

B32537B8475J000 2012-10-19 2013-01-19 2013-04-19

B32537B8474K000 2012-10-19 2013-01-19 2013-04-19

B32537B8474J000 2012-10-19 2013-01-19 2013-04-19

B32537B5335K000 2012-10-19 2013-01-19 2013-04-19

B32537B5335J000 2012-10-19 2013-01-19 2013-04-19

B32537B1685K000 2012-10-19 2013-01-19 2013-04-19

B32537B1685J000 2012-10-19 2013-01-19 2013-04-19

B32537B1684K000 2012-10-19 2013-01-19 2013-04-19

B32537B1684J000 2012-10-19 2013-01-19 2013-04-19

B32537B1476K000 2012-10-19 2013-01-19 2013-04-19

B32537B1476J000 2012-10-19 2013-01-19 2013-04-19

B32537B1475K000 2012-10-19 2013-01-19 2013-04-19

B32537B1475J000 2012-10-19 2013-01-19 2013-04-19

B32537B1474K000 2012-10-19 2013-01-19 2013-04-19

B32537B1474J000 2012-10-19 2013-01-19 2013-04-19

B32537B1335K000 2012-10-19 2013-01-19 2013-04-19

B32537B1335J000 2012-10-19 2013-01-19 2013-04-19

B32537B1334K000 2012-10-19 2013-01-19 2013-04-19

B32537B1334J000 2012-10-19 2013-01-19 2013-04-19

B32537B1226K000 2012-10-19 2013-01-19 2013-04-19

B32537B1226J000 2012-10-19 2013-01-19 2013-04-19

B32537B1225K000 2012-10-19 2013-01-19 2013-04-19

B32537B1225J000 2012-10-19 2013-01-19 2013-04-19

B32537B1224K000 2012-10-19 2013-01-19 2013-04-19

B32537B1224J000 2012-10-19 2013-01-19 2013-04-19

Ordering Code Substitute Product Date of

Withdrawal Deadline Last

Orders Last Shipments

B32537B1155K000 2012-10-19 2013-01-19 2013-04-19

B32537B1155J000 2012-10-19 2013-01-19 2013-04-19

B32537B1154K000 2012-10-19 2013-01-19 2013-04-19

B32537B1154J000 2012-10-19 2013-01-19 2013-04-19

B32537B1107K000 2012-10-19 2013-01-19 2013-04-19

B32537B1107J000 2012-10-19 2013-01-19 2013-04-19

B32537B1106K000 2012-10-19 2013-01-19 2013-04-19

B32537B1106J000 2012-10-19 2013-01-19 2013-04-19

B32537B1105K000 2012-10-19 2013-01-19 2013-04-19

B32537B1105J000 2012-10-19 2013-01-19 2013-04-19

B32537B1104K000 2012-10-19 2013-01-19 2013-04-19

B32537B1104J000 2012-10-19 2013-01-19 2013-04-19

B32537B8473K000 2012-10-19 2013-01-19 2013-04-19

B32537B8473J000 2012-10-19 2013-01-19 2013-04-19

B32537B8335K000 2012-10-19 2013-01-19 2013-04-19

For further information please contact your nearest EPCOS sales office, which will also support

you in selecting a suitable substitute. The addresses of our worldwide sales network are

presented at www.epcos.com/sales.

Typical applications

Measurement equipment

Rough environments

High-rel circuits in industrial electronics

Climatic

Max. operating temperature: 125 °C

Climatic category (IEC 60068-1): 55/100/56

Features

Optimum self-healing capability

Excellent short circuit protection

Very high reliability

Construction

Dielectric: polyethylene terephthalate

(polyester, PET)

Construction with structured metallization

Tubular winding

Encapsulated in metal tube

Insulating sleeve

Face ends sealed with epoxy resin

Terminals

Central axial leads, lead-free tinned

Marking

Manufacturer's logo, style (MKT-S),

rated capacitance (coded)

capacitance tolerance (code letter)

rated voltage, date of manufacture (coded)

Delivery mode

Bulk (untaped)

For notes on taping, refer to chapter "Taping and packing“.

Dimensional drawing

Dimensions in mm

Diameter d <8.5 8.5 ... 16 >16

Lead diameter d10.6 0.8 1.0

When bending leads take care to leave a

clearance of 1 mm to the capacitor body.

Metallized polyester film capacitors (MKT-S) B32537

High reliability (wound)

Page 2 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Overview of types

Type B32537

VR(V DC) 50 100 160 250 630

VRMS (V AC) 20 35 60 90 200

CR(µF)

0.033

0.047

0.068

0.10

0.15

0.22

0.33

0.47

0.68

1.0

1.5

2.2

3.3

4.7

6.8

100

B32537

High reliability (wound)

Page 3 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Ordering codes and packing units

V DC

VRMS

f≤60 Hz

V AC

µF

Max. dimensions

d×l

Ordering code

(composition see

below)

Untaped

pcs./MOQ

MOQ = Minimum Order Quantity, consisting of 4 packing units.

Further E series and intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code:

K = ±10%

J = ±5%

50 20 0.47 7.4 ×18.5 B32537B5474+000 200

0.68 7.4 ×18.5 B32537B5684+000 200

1.0 7.4 ×18.5 B32537B5105+000 200

1.5 7.4 ×18.5 B32537B5155+000 200

2.2 8.4 ×21.0 B32537B5225+000 200

3.3 9.4 ×21.0 B32537B5335+000 80

4.7 10.7 ×21.0 B32537B5475+000 80

6.8 11.7 ×21.0 B32537B5685+000 80

10 12.7 ×21.0 B32537B5106+000 80

100 35 0.10 7.4 ×18.5 B32537B1104+000 200

0.15 7.4 ×18.5 B32537B1154+000 200

0.22 7.4 ×18.5 B32537B1224+000 200

0.33 7.4 ×18.5 B32537B1334+000 200

0.47 7.4 ×18.5 B32537B1474+000 200

0.68 7.4 ×18.5 B32537B1684+000 200

1.0 8.4 ×21.0 B32537B1105+000 200

1.5 8.4 ×21.0 B32537B1155+000 200

2.2 9.4 ×21.0 B32537B1225+000 80

3.3 9.4 ×21.0 B32537B1335+000 80

4.7 11.7 ×21.0 B32537B1475+000 80

6.8 10.7 ×34.0 B32537B1685+000 80

10 10.7 ×34.0 B32537B1106+000 80

22 15.7 ×34.0 B32537B1226+000 80

47 20.7 ×34.0 B32537B1476+000 80

100 29.7 ×34.0 B32537B1107+000 80

B32537

High reliability (wound)

Page 4 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Ordering codes and packing units

V DC

VRMS

f≤60 Hz

V AC

µF

Max. dimensions

d×l

Ordering code

(composition see

below)

Untaped

pcs./MOQ

MOQ = Minimum Order Quantity, consisting of 4 packing units.

Further E series and intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code:

K = ±10%

J = ±5%

160 60 0.10 7.4 ×18.5 B32537B2104+000 200

0.15 7.4 ×18.5 B32537B2154+000 200

0.22 7.4 ×18.5 B32537B2224+000 200

0.33 7.4 ×18.5 B32537B2334+000 200

0.47 8.4 ×21.0 B32537B2474+000 200

0.68 8.4 ×21.0 B32537B2684+000 200

1.0 9.4 ×21.0 B32537B2105+000 80

1.5 10.7 ×21.0 B32537B2155+000 80

2.2 11.7 ×21.0 B32537B2225+000 80

3.3 10.7 ×34.0 B32537B2335+000 80

4.7 12.7 ×34.0 B32537B2475+000 80

6.8 12.7 ×34.0 B32537B2685+000 80

10 15.7 ×34.0 B32537B2106+000 80

250 90 0.10 7.4 ×18.5 B32537B3104+000 200

0.15 7.4 ×18.5 B32537B3154+000 200

0.22 7.4 ×18.5 B32537B3224+000 200

0.33 8.4 ×21.0 B32537B3334+000 200

0.47 9.4 ×21.0 B32537B3474+000 80

0.68 9.4 ×21.0 B32537B3684+000 80

1.0 11.7 ×21.0 B32537B3105+000 80

1.5 12.7 ×21.0 B32537B3155+000 80

2.2 13.7 ×21.0 B32537B3225+000 80

3.3 12.7 ×34.0 B32537B3335+000 80

4.7 15.7 ×34.0 B32537B3475+000 80

6.8 17.7 ×34.0 B32537B3685+000 80

10 20.7 ×34.0 B32537B3106+000 80

B32537

High reliability (wound)

Page 5 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Ordering codes and packing units

V DC

VRMS

f≤60 Hz

V AC

µF

Max. dimensions

d×l

Ordering code

(composition see

below)

Untaped

pcs./MOQ

MOQ = Minimum Order Quantity, consisting of 4 packing units.

Further E series and intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code:

K = ±10%

J = ±5%

630 200 0.033 7.4 ×18.5 B32537B8333+000 200

0.047 7.4 ×18.5 B32537B8473+000 200

0.068 8.4 ×21.0 B32537B8683+000 200

0.10 9.4 ×21.0 B32537B8104+000 80

0.15 9.4 ×21.0 B32537B8154+000 80

0.22 11.7 ×21.0 B32537B8224+000 80

0.33 12.7 ×21.0 B32537B8334+000 80

0.47 13.7 ×21.0 B32537B8474+000 80

0.68 12.7 ×34.0 B32537B8684+000 80

1.0 15.7 ×34.0 B32537B8105+000 80

1.5 17.7 ×34.0 B32537B8155+000 80

2.2 20.7 ×34.0 B32537B8225+000 80

3.3 25.7 ×34.0 B32537B8335+000 80

4.7 29.7 ×34.0 B32537B8475+000 80

B32537

High reliability (wound)

Page 6 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Technical data

Operating temperature range Max. operating temperature Top,max +125 °C

Upper category temperature Tmax +100 °C

Lower category temperature Tmin 55 °C

Rated temperature TR+85 °C

Dissipation factor tan δ(in 10-3) CR(µF) ≤0.47 0.47 < CR≤4.7 4.7 < CR≤10.0 > 10.0

at 20 °Cat 1 kHz 7 8 8 10

(upper limit values) at 10 kHz 15 22 25 

Insulation resistance Rins CR

or time constant τ= CRRins ≤0.33 µF > 15000 MΩ

at 20 °C, rel. humidity ≤65% > 0.33 µF > 5000 s

(minimum as-delivered values)

DC test voltage 1.4 VR,2s

Category voltage VCTA(°C) DC voltage derating AC voltage derating

(continuous operation with VDC TA≤85 VC= VRVC,RMS = VRMS

or VAC atf≤60 Hz) 85<TA≤100 VC= VR(165TA)/80 VC,RMS=VRMS (165TA)/80

Operating voltage Vop for TA(°C) DC voltage (max. hours) AC voltage (max. hours)

short operating periods TA≤100 Vop = 1.25 VC(2000 h) Vop = 1.0 VC,RMS (2000 h)

(VDC or VAC atf≤60 Hz) 100<TA≤125 Vop = 0.5 VR(1000 h) Vop = 0.5 VRMS (1000 h)

Damp heat test 56 days/40 °C/93% relative humidity

Limit values after damp Capacitance change ∆C/C≤5%

heat test Dissipation factor change ∆tan δ ≤ 510-3 (at 1 kHz)

Insulation resistance Rins ≥50% of minimum

as-delivered values

Reliability:

Failure rate λ1 fit (≤110-9/h) at 0.5 VR,40°C

Service life tSL 200 000 h at 1.0 VR,85°C

For conversion to other operating conditions and temperatures,

refer to chapter "Quality, 2 Reliability".

Failure criteria:

Total failure Short circuit or open circuit

Failure due to variation Capacitance change ∆C/C> 10%

of parameters Dissipation factor tan δ> 1.5 upper limit value

Insulation resistance Rins < 150 MΩ(CR≤0.33 µF)

or time constant τ= CRRins < 50 s (CR> 0.33 µF)

B32537

High reliability (wound)

Page 7 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Pulse handling capability

"dV/dt" represents the maximum permissible voltage change per unit of time for non-sinusoidal

voltages, expressed in V/µs.

"k0" represents the maximum permissible pulse characteristic of the waveform applied to the

capacitor, expressed in V2/µs.

Note:

The values of dV/dt and k0provided below must not be exceeded in order to avoid damaging the

capacitor.

dV/dt values

Length of capacitor 18.5 mm 21 mm 34 mm

VRVRMS

V DC V AC dV/dt in V/µs

50 20 2.5 1.5 

100 35 13 9 6

160 60 20 12 8

250 90 23 16 10

630 200 40 26 18

k0values

Length of capacitor 18.5 mm 21 mm 34 mm

VRVRMS

V DC V AC k0in V2/µs

50 20 250 150 

100 35 2 600 1 800 1 200

160 60 6 400 3 840 2 560

250 90 11 500 8 000 5 000

630 200 50 400 32 800 22 700

B32537

High reliability (wound)

Page 8 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Impedance Z versus frequency f

(typical values)

Permissible AC voltage VRMS versus frequency f

Values can be obtained on request. In specific cases please provide a scaled voltage/ time graph

and state operating conditions.

B32537

High reliability (wound)

Page 9 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Mounting guidelines

1 Soldering

1.1 Solderability of leads

The solderability of terminal leads is tested to IEC 60068-2-20, test Ta, method 1.

Before a solderability test is carried out, terminals are subjected to accelerated ageing (to

IEC 60068-2-2, test Ba: 4 h exposure to dry heat at 155 °C). Since the ageing temperature is far

higher than the upper category temperature of the capacitors, the terminal wires should be cut off

from the capacitor before the ageing procedure to prevent the solderability being impaired by the

products of any capacitor decomposition that might occur.

Solder bath temperature 235 ±5°C

Soldering time 2.0 ±0.5 s

Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane

Evaluation criteria:

Visual inspection Wetting of wire surface by new solder ≥90%, free-flowing solder

1.2 Resistance to soldering heat

Resistance to soldering heat is tested to IEC 60068-2-20, test Tb, method 1A.

Conditions:

Series Solder bath temperature Soldering time

MKT boxed (except 2.5 ×6.5 ×7.2 mm)

coated

uncoated (lead spacing > 10 mm)

260 ±5°C 10 ±1 s

MFP

MKP (lead spacing > 7.5 mm)

MKT boxed (case 2.5 ×6.5 ×7.2 mm) 5±1 s

MKP

MKT

(lead spacing ≤7.5 mm)

uncoated (lead spacing ≤10 mm)

insulated (B32559)

<4s

recommended soldering

profile for MKT uncoated

(lead spacing ≤10 mm) and

insulated (B32559)

B32537

High reliability (wound)

Page 10 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane

Shield Heat-absorbing board, (1.5 ±0.5) mm thick, between capacitor

body and liquid solder

Evaluation criteria:

Visual inspection No visible damage

∆C/C0

2% for MKT/MKP/MFP

5% for EMI suppression capacitors

tan δAs specified in sectional specification

B32537

High reliability (wound)

Page 11 of 20Please read Cautions and warnings and

Important notes at the end of this document.

1.3 General notes on soldering

Permissible heat exposure loads on film capacitors are primarily characterized by the upper cate-

gory temperature Tmax. Long exposure to temperatures above this type-related temperature limit

can lead to changes in the plastic dielectric and thus change irreversibly a capacitor's electrical

characteristics. For short exposures (as in practical soldering processes) the heat load (and thus

the possible effects on a capacitor) will also depend on other factors like:

Pre-heating temperature and time

Forced cooling immediately after soldering

Terminal characteristics:

diameter, length, thermal resistance, special configurations (e.g. crimping)

Height of capacitor above solder bath

Shadowing by neighboring components

Additional heating due to heat dissipation by neighboring components

Use of solder-resist coatings

The overheating associated with some of these factors can usually be reduced by suitable coun-

termeasures. For example, if a pre-heating step cannot be avoided, an additional or reinforced

cooling process may possibly have to be included.

EPCOS recommends the following conditions:

Pre-heating with a maximum temperature of 110 °C

Temperature inside the capacitor should not exceed the following limits:

MKP/MFP 110 °C

MKT 160 °C

When SMD components are used together with leaded ones, the leaded film capacitors should

not pass into the SMD adhesive curing oven. The leaded components should be assembled af-

ter the SMD curing step.

Leaded film capacitors are not suitable for reflow soldering.

Uncoated capacitors

For uncoated MKT capacitors with lead spacings ≤10 mm (B32560/B32561) the following mea-

sures are recommended:

pre-heating to not more than 110 °C in the preheater phase

rapid cooling after soldering

B32537

High reliability (wound)

Page 12 of 20Please read Cautions and warnings and

Important notes at the end of this document.

2 Cleaning

To determine whether the following solvents, often used to remove flux residues and other sub-

stances, are suitable for the capacitors described, refer to the table below:

Type Ethanol,

isopropanol,

n-propanol

n-propanol-water

mixtures,

water with surface

tension-reducing

tensides (neutral)

Solvent from

table A (see

next page)

Solvent from

table B (see

next page)

MKT

(uncoated)

Suitable Unsuitable In part suitable Unsuitable

MKT, MKP, MFP

(coated/boxed)

Suitable Suitable

Even when suitable solvents are used, a reversible change of the electrical characteristics may

occur in uncoated capacitors immediately after they are washed. Thus it is always recommended

to dry the components (e.g. 4 h at 70 °C) before they are subjected to subsequent electrical test-

ing.

Table A

Manufacturers' designations for trifluoro-trichloro-ethane-based cleaning solvents (selection)

Trifluoro-trichloro-

ethane

Mixtures of trifluoro-trichloro-ethane with ethanol and

isopropanol

Manufacturer

Freon TF Freon TE 35; Freon TP 35; Freon TES Du Pont

Frigen 113 TR Frigen 113 TR-E; Frigen 113 TR-P; Frigen TR-E 35 Hoechst

Arklone P Arklone A; Arklone L; Arklone K ICI

Kaltron 113 MDR Kaltron 113 MDA; Kaltron 113 MDI; Kaltron 113 MDI 35 Kali-Chemie

Flugene 113 Flugene 113 E; Flugene 113 IPA Rhone-Progil

Table B (worldwide banned substances)

Manufacturers' designations for unsuitable cleaning solvents (selection)

Mixtures of chlorinated hydrocarbons and ketones with fluorated hydrocarbons Manufacturer

Freon TMC; Freon TA; Freon TC Du Pont

Arklone E ICI

Kaltron 113 MDD; Kaltron 113 MDK Kali-Chemie

Flugene 113 CM Rhone-Progil

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Important notes at the end of this document.

3 Embedding of capacitors in finished assemblies

In many applications, finished circuit assemblies are embedded in plastic resins. In this case,

both chemical and thermal influences of the embedding ("potting") and curing processes must be

taken into account.

Our experience has shown that the following potting materials can be recommended: non-flexible

epoxy resins with acid-anhydride hardeners; chemically inert, non-conducting fillers; maximum

curing temperature of 100 °C.

Caution:

Consult us first if you wish to embed uncoated types!

B32537

High reliability (wound)

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Important notes at the end of this document.

Cautions and warnings

Do not exceed the upper category temperature (UCT).

Do not apply any mechanical stress to the capacitor terminals.

Avoid any compressive, tensile or flexural stress.

Do not move the capacitor after it has been soldered to the PC board.

Do not pick up the PC board by the soldered capacitor.

Do not place the capacitor on a PC board whose PTH hole spacing differs from the specified

lead spacing.

Do not exceed the specified time or temperature limits during soldering.

Avoid external energy inputs, such as fire or electricity.

Avoid overload of the capacitors.

The table below summarizes the safety instructions that must always be observed. A detailed de-

scription can be found in the relevant sections of the chapters "General technical information" and

"Mounting guidelines".

Topic Safety information Reference chapter

"General technical

information"

Storage conditions Make sure that capacitors are stored within the

specified range of time, temperature and humidity

conditions.

4.5

"Storage conditions"

Flammability Avoid external energy, such as fire or electricity

(passive flammability), avoid overload of the

capacitors (active flammability) and consider the

flammability of materials.

5.3

"Flammability"

Resistance to

vibration

Do not exceed the tested ability to withstand

vibration. The capacitors are tested to

IEC 60068-2-6.

EPCOS offers film capacitors specially designed

for operation under more severe vibration regimes

such as those found in automotive applications.

Consult our catalog "Film Capacitors for

Automotive Electronics".

5.2

"Resistance to vibration"

B32537

High reliability (wound)

Page 15 of 20Please read Cautions and warnings and

Important notes at the end of this document.

Topic Safety information Reference chapter

"Mounting guidelines"

Soldering Do not exceed the specified time or temperature

limits during soldering.

1 "Soldering"

Cleaning Use only suitable solvents for cleaning capacitors. 2 "Cleaning"

Embedding of

capacitors in

finished assemblies

When embedding finished circuit assemblies in

plastic resins, chemical and thermal influences

must be taken into account.

Caution: Consult us first, if you also wish to

embed other uncoated component types!

3 "Embedding of

capacitors in finished

assemblies"

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Important notes at the end of this document.

Symbols and terms

Symbol English German

αHeat transfer coefficient Wärmeübergangszahl

αCTemperature coefficient of capacitance Temperaturkoeffizient der Kapazität

A Capacitor surface area Kondensatoroberfläche

βCHumidity coefficient of capacitance Feuchtekoeffizient der Kapazität

C Capacitance Kapazität

CRRated capacitance Nennkapazität

∆C Absolute capacitance change Absolute Kapazitätsänderung

∆C/C Relative capacitance change (relative

deviation of actual value)

Relative Kapazitätsänderung (relative

Abweichung vom Ist-Wert)

∆C/CRCapacitance tolerance (relative deviation

from rated capacitance)

Kapazitätstoleranz (relative Abweichung

vom Nennwert)

dt Time differential Differentielle Zeit

∆t Time interval Zeitintervall

∆T Absolute temperature change

(self-heating)

Absolute Temperaturänderung

(Selbsterwärmung)

∆tan δAbsolute change of dissipation factor Absolute Änderung des Verlustfaktors

∆V Absolute voltage change Absolute Spannungsänderung

dV/dt Time differential of voltage function (rate

of voltage rise)

Differentielle Spannungsänderung

(Spannungsflankensteilheit)

∆V/∆t Voltage change per time interval Spannungsänderung pro Zeitintervall

E Activation energy for diffusion Aktivierungsenergie zur Diffusion

ESL Self-inductance Eigeninduktivität

ESR Equivalent series resistance Ersatz-Serienwiderstand

f Frequency Frequenz

f1Frequency limit for reducing permissible

AC voltage due to thermal limits

Grenzfrequenz für thermisch bedingte

Reduzierung der zulässigen

Wechselspannung

f2Frequency limit for reducing permissible

AC voltage due to current limit

Grenzfrequenz für strombedingte

Reduzierung der zulässigen

Wechselspannung

frResonant frequency Resonanzfrequenz

FDThermal acceleration factor for diffusion Therm. Beschleunigungsfaktor zur

Diffusion

FTDerating factor Deratingfaktor

i Current (peak) Stromspitze

ICCategory current (max. continuous

current)

Kategoriestrom (max. Dauerstrom)

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Important notes at the end of this document.

Symbol English German

IRMS (Sinusoidal) alternating current,

root-mean-square value

(Sinusförmiger) Wechselstrom

izCapacitance drift Inkonstanz der Kapazität

k0Pulse characteristic Impulskennwert

LSSeries inductance Serieninduktivität

λFailure rate Ausfallrate

λ0Constant failure rate during useful

service life

Konstante Ausfallrate in der

Nutzungsphase

λtest Failure rate, determined by tests Experimentell ermittelte Ausfallrate

Pdiss Dissipated power Abgegebene Verlustleistung

Pgen Generated power Erzeugte Verlustleistung

Q Heat energy Wärmeenergie

ρDensity of water vapor in air Dichte von Wasserdampf in Luft

R Universal molar constant for gases Allg. Molarkonstante für Gas

R Ohmic resistance of discharge circuit Ohmscher Widerstand des

Entladekreises

RiInternal resistance Innenwiderstand

Rins Insulation resistance Isolationswiderstand

RPParallel resistance Parallelwiderstand

RSSeries resistance Serienwiderstand

S severity (humidity test) Schärfegrad (Feuchtetest)

t Time Zeit

T Temperature Temperatur

τTime constant Zeitkonstante

tan δDissipation factor Verlustfaktor

tan δDDielectric component of dissipation

factor

Dielektrischer Anteil des Verlustfaktors

tan δPParallel component of dissipation factor Parallelanteil des Verlfustfaktors

tan δSSeries component of dissipation factor Serienanteil des Verlustfaktors

TAAmbient temperature Umgebungstemperatur

Tmax Upper category temperature Obere Kategorietemperatur

Tmin Lower category temperature Untere Kategorietemperatur

tOL Operating life at operating temperature

and voltage

Betriebszeit bei Betriebstemperatur und

-spannung

Top Operating temperature Beriebstemperatur

TRRated temperature Nenntemperatur

Tref Reference temperature Referenztemperatur

tSL Reference service life Referenz-Lebensdauer

VAC AC voltage Wechselspannung

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Important notes at the end of this document.

Symbol English German

VCCategory voltage Kategoriespannung

VC,RMS Category AC voltage (Sinusförmige)

Kategorie-Wechselspannung

VCD Corona-discharge onset voltage Teilentlade-Einsatzspannung

Vch Charging voltage Ladespannung

VDC DC voltage Gleichspannung

VFB Fly-back capacitor voltage Spannung (Flyback)

ViInput voltage Eingangsspannung

VoOutput voltage Ausgangssspannung

Vop Operating voltage Betriebsspannung

VpPeak pulse voltage Impuls-Spitzenspannung

Vpp Peak-to-peak voltage Impedance Spannungshub

VRRated voltage Nennspannung

RAmplitude of rated AC voltage Amplitude der Nenn-Wechselspannung

VRMS (Sinusoidal) alternating voltage,

root-mean-square value

(Sinusförmige) Wechselspannung

VSC S-correction voltage Spannung bei Anwendung "S-correction"

Vsn Snubber capacitor voltage Spannung bei Anwendung

"Beschaltung"

Z Impedance Scheinwiderstand

Lead spacing Rastermaß

B32537

High reliability (wound)

Page 19 of 20Please read Cautions and warnings and

Important notes at the end of this document.

The following applies to all products named in this publication:

1. Some parts of this publication contain statements about the suitability of our products for

certain areas of application. These statements are based on our knowledge of typical re-

quirements that are often placed on our products in the areas of application concerned. We

nevertheless expressly point out that such statements cannot be regarded as binding

statements about the suitability of our products for a particular customer application.

As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar

with them than the customers themselves. For these reasons, it is always ultimately incum-

bent on the customer to check and decide whether an EPCOS product with the properties de-

scribed in the product specification is suitable for use in a particular customer application.

2. We also point out that in individual cases, a malfunction of electronic components or

failure before the end of their usual service life cannot be completely ruled out in the

current state of the art, even if they are operated as specified. In customer applications

requiring a very high level of operational safety and especially in customer applications in

which the malfunction or failure of an electronic component could endanger human life or

health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by

means of suitable design of the customer application or other action taken by the customer

(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by

third parties in the event of malfunction or failure of an electronic component.

3. The warnings, cautions and product-specific notes must be observed.

4. In order to satisfy certain technical requirements, some of the products described in this

publication may contain substances subject to restrictions in certain jurisdictions (e.g.

because they are classed as hazardous). Useful information on this will be found in our Ma-

terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-

tailed questions, please contact our sales offices.

5. We constantly strive to improve our products. Consequently, the products described in this

publication may change from time to time. The same is true of the corresponding product

specifications. Please check therefore to what extent product descriptions and specifications

contained in this publication are still applicable before or when you place an order. We also

reserve the right to discontinue production and delivery of products. Consequently, we

cannot guarantee that all products named in this publication will always be available. The

aforementioned does not apply in the case of individual agreements deviating from the fore-

going for customer-specific products.

6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-

sion of the "General Terms of Delivery for Products and Services in the Electrical In-

dustry" published by the German Electrical and Electronics Industry Association

(ZVEI).

7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DSSP,

MiniBlue, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, SIFERRIT,

SIFI, SIKOREL, SilverCap, SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse,

WindCap are trademarks registered or pending in Europe and in other countries. Further

information will be found on the Internet at www.epcos.com/trademarks.

Important notes

Page 20 of 20