SFR16S, SFR25, SFR25H
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Standard Metal Film Leaded Resistors
A homogeneous film of metal alloy is deposited on a high
grade ceramic body. After a helical groove has been cut in
the resistive layer, tinned connecting leads of electrolytic
copper are welded to the end-caps.
The resistors are coated with a colored lacquer (light-blue
for type SFR16S; light-green for type SFR25 and red-brown
for type SFR25H) which provides electrical, mechanical, and
climatic protection. The encapsulation is resistant to all
cleaning solvents in accordance with IEC 60068-2-45.
FEATURES
•
Small size (SFR16S: 0204, SFR25 / SFR25H: 0207)
• Low noise (max. 1.5 μV/V for R > 1 M)
• Compatible to both lead (Pb)-free and lead
containing soldering processes
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
APPLICATIONS
• General purpose resistors
Note
•R value is measured with probe distance of 24 mm ± 1 mm using 4-terminal method.
TECHNICAL SPECIFICATIONS
DESCRIPTION SFR16S SFR25 SFR25H
DIN size 0204 0207 0207
Resistance range 1 to 3 M; jumper (0 0.22 to 10 M; jumper (0 0.22 to 10 M
Resistance tolerance ± 5 %; ± 1 %
Temperature coefficient ± 250 ppm/K; ± 100 ppm/K
Rated dissipation, P70 0.5 W 0.4 W 0.5 W
Thermal resistance 170 K/W 200 K/W 150 K/W
Operating voltage, Umax. AC/DC 200 V 250 V 350 V
Operating temperature range -55 °C to 155 °C
Permissible film temperature 155 °C
Max. resistance change at rated dissipation
|R/R max.|, after 1000 h ± (2 % R + 0.05 )
SFR16S, SFR25, SFR25H
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Note
(1) Jumper is only available for SFR25.
Notes
• The products can be ordered using either the PRODUCT DESCRIPTION or the PART NUMBER.
(1) N4 packaging indicates SFR25 and SFR25H radial version.
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE TOLERANCE TCR RESISTANCE E-SERIES
SFR16S
± 5 %
± 250 ppm/K 1 to 4.7
E24± 100 ppm/K 4.7 to 100 k
± 250 ppm/K > 100 k to 3 M
± 1 %
± 100 ppm/K 5.6 to 100 k
E24; E96
± 250 ppm/K > 100 k to 976 k
Jumper (0 - 30 m; Imax. = 3 A -
SFR25, SFR25H
± 5 %
± 250 ppm/K 0.22 to 4.7
E24± 100 ppm/K > 4.7 to 1 M
± 250 ppm/K > 1 M to 10 M
± 1 %
± 250 ppm/K 1 to 4.7
E24; E96± 100 ppm/K > 4.7 to 1 M
± 250 ppm/K > 1 M to 10 M
Jumper (0 ) (1) - 30 m; Imax. = 5 A -
PART NUMBER AND PRODUCT DESCRIPTION
PART NUMBER: SFR2500001001FA500
TYPE VARIANT TCR/MATERIAL RESISTANCE TOLERANCE PACKAGING SPECIAL
SFR16S0
SFR2500
SFR25H0
0 = neutral
Z = value overflow
(special)
0 = standard
Z = jumper
3 digit value
1 digit multiplier
MULTIPLIER
F = ± 1 %
J = ± 5 %
Z = jumper
N4
A5
A1
R5
The 2 digits
are used for
all special
parts.
00 = standard
7 = *10-3
8 = *10-2
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
4 = *104
5 = *105
Z = 0000
PRODUCT DESCRIPTION: SFR25 1 % A5 1K0
SFR25 1 % A5 1K0
TYPE TOLERANCE PACKAGING (1) RESISTANCE VALUE
SFR16S
SFR25
SFR25H
± 1 %
± 5 %
N4
A5
A1
R5
47K = 47 k
51R1 = 51.1
25RFS 00001001FA500
SFR16S, SFR25, SFR25H
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Notes
(1) A1 packaging only available for resistors with ± 5 % tolerance.
(2) N4 packaging only available for SFR25 and SFR25H radial version.
MARKING
The nominal resistance and tolerance are marked on the resistor using four or five colored bands in accordance with IEC 60062,
marking codes for resistors and capacitors.
PACKAGING
TYPE CODE QUANTITY PACKAGING STYLE WIDTH PITCH DIMENSIONS
SFR16S
A5 5000 Taped acc. to IEC 60286-1
fan-folded in a box
52 mm 5 mm
75 mm x 73 mm x 270 mm
R5 5000 Taped acc. to IEC 60286-1
on a reel 92 mm x 278 mm x 278 mm
A1 (1) 1000 Taped acc. to IEC 60286-1
fan-folded in a box 75 mm x 28 mm x 262 mm
SFR25, SFR25H
A5 5000 Taped acc. to IEC 60286-1
fan-folded in a box
52 mm 5 mm
75 mm x 98 mm x 270 mm
R5 5000 Taped acc. to IEC 60286-1
on a reel 93 mm x 300 mm x 298 mm
A1 (1) 1000 Taped acc. to IEC 60286-1
fan-folded in a box 75 mm x 28 mm x 262 mm
N4 (2) 4000 Taped acc. to IEC 60286-2
fan-folded in a box - 12.7 mm 45 mm x 262 mm x 330 mm
SFR16S, SFR25, SFR25H
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FUNCTIONAL PERFORMANCE
Maximum dissipation (Pmax.) in percentage of rated power as a function of the ambient temperature (Tamb)
SFR16S Hot-spot temperature rise (T) as a function
of dissipated power
SFR25/SFR25H Hot-spot temperature rise (T) as a function
of dissipated power
Note
• The maximum permissible hot-spot temperature is 155 °C.
-55
Ambient Temperature in °C
Power in %
0 50 70 100 125 155 180
Derating
20
0
40
60
80
100
0 0.2 0.4 0.6
30
(W)
(K)
Δ
P
T
90
70
50
10
00.5
100
20
40
60
80
0.1 0.2 0.3 0.4
(W)
Δ
(K) SFR25
SFR25H
P
T
SFR16S, SFR25, SFR25H
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SFR16S Pulse on a regular basis; maximum permissible peak pulse power ( max.) as a function of pulse duration (ti)
SFR16S Pulse on a regular basis; maximum permissible peak pulse voltage ( max.) as a function of pulse duration (ti)
SFR25 Pulse on a regular basis; maximum permissible peak pulse power ( max.) as a function of pulse duration (ti)
10-5 10-4 10-3 10-2 10-1 1
103
1
10
102
max.
(W)
i(s)
10-6
10-1
200
100
50
20
10
5
2
/ = 1000
i
t
p
t
P
t
500
P
600
0
10-6 10-5 10-4 10-3 10-2 10-1 1
500
400
300
200
100
max.
(V)
i(s)
U
t
U
10-5 10-4 10-3 10-2 10-1 1
103
1
10
102
max.
(W)
10-6
10-1
2
5
10
20
50
100
200
500
/ = 1000
i(s)
t
P
i
t
p
t
P
SFR16S, SFR25, SFR25H
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SFR25 Pulse on a regular basis; maximum permissible peak pulse voltage ( max.) as a function of pulse duration (ti)
SFR25H Pulse on a regular basis; maximum permissible peak pulse power ( max.) as a function of pulse duration (ti)
SFR25H Pulse on a regular basis; maximum permissible peak pulse voltage ( max.) as a function of pulse duration (ti)
600
0
10-6 10-5 10-4 10-3 10-2 10-1 1
500
400
300
200
100
max.
(V)
U
i(s)
t
U
10-5 10-4 10-3 10-2 10-1 1
103
1
10
102
10-6
10-1
2
5
10
20
50
100
200
500
i(s)
t
max.
(W) / = 1000
P
i
t
p
t
P
h
1200
0
10-6 10-5 10-4 10-3 10-2 10-1 1
800
400
max.
(V)
U
i(s)
t
U
SFR16S, SFR25, SFR25H
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TESTS PROCEDURES AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
• EN 60115-1, generic specification (includes tests)
The test and requirements table contains only the most
important tests. For the full test schedule refer to the
documents listed above.
The tests are carried out in accordance with IEC 60068-2-xx
test method and under standard atmospheric conditions in
accordance with IEC 60068-1, 5.3.
Unless otherwise specified the following values apply:
• Temperature: 15 °C to 35 °C
• Relative humidity: 45 % to 75 %
• Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar).
For performing some of the tests, the components are
mounted on a test board in accordance with IEC 60115-1,
4.31. In test procedures and requirements table, only the
tests and requirements are listed with reference to the
relevant clauses of IEC 60115-1 and IEC 60068-2-xx test
methods. A short description of the test procedure is also
given.
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS PERMISSIBLE CHANGE (Rmax.)
4.5 - Resistance - ± 5 %; ± 1 %
4.8 - Temperature
coefficient
At (20 / -55 / 20) °C
and (20 / 155 / 20) °C ± 250 ppm/K; ± 100 ppm/K
4.12 - Noise IEC 60195
< 68 k68 k to
100 k
> 100 k to
1 M> 1 M
SFR16S ≤ 0.1 μV/V ≤ 0.5 μV/V ≤ 1.5 μV/V ≤ 1.5 μV/V
SFR25,
SFR25H ≤ 0.1 μV/V ≤ 0.1 μV/V ≤ 0.1 μV/V ≤ 1.5 μV/V
4.13 - Short time
overload
Room temperature;
P = 6.25 x Pn;
(voltage not more than 2 x
limiting voltage); 5 s
± (0.25 %R +0.05)
4.16
21 (Ua1)
21 (Ub)
21 (Uc)
Robustness of
terminations Tensile, bending, and torsion ± (0.25 % R + 0.05 )
4.17 20 (Ta) Solderability
at +235 °C; 2 s;
solder bath method;
SnPb40 Good tinning (≥ 95 % covered); no damage
at +245 °C; 3 s;
solder bath method;
SnAg3Cu0.5
4.18 20 (Tb) Resistance to
soldering heat
Unmounted components
(260 ± 5) °C; (10 ± 1) s ± (0.25 % R + 0.05 )
4.19 14 (Na) Rapid change of
temperature
30 min at -55 °C and
30 min at +155 °C;
5 cycles
± (0.25 % R + 0.05 )
4.20 29 (Eb) Bump 3 x 1500 bumps in 3 directions;
40 g ± (0.25 % R + 0.05 ); no damage
4.22 6 (Fc) Vibration
10 sweep cycles per direction;
10 Hz to2000 Hz
1.5 mm or 200 m/s2
± (0.25 % R + 0.05 ); no damage
4.23 Climatic
sequence:
4.23.2 2 (Ba) Dry heat 155 °C; 16h
4.23.3 30 (Db) Damp heat,
cyclic
55 °C; 24h;
90% to100%RH; 1 cycle
4.23.4 1 (Aa) Cold -55 °C; 2h
4.23.5 13 (M) Low air pressure 8.5kPa; 2h; 15 °Cto35 °C
4.23.6 30 (Db) Damp heat,
cyclic
55°C; 5days;
95 %to100%RH; 5 cycles SFR16S,
SFR25,
SFR25H
± (1 %R +0.05 ); no visible damage
± (1 %R +0.05 ); no visible damage
± 2 %R; no visible damage
4.23.7 DC load apply rated power for 1 min
SFR16S, SFR25, SFR25H
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DIMENSIONS
SFR25, SFR25H WITH RADIAL TAPING
Note
• Please refer to document “Packaging” for more detail
(www.vishay.com/doc?28721).
4.24 78 (Cab) Damp heat
(steady state)
(40 ± 2) °C; 56 days;
(93 ± 3) % RH ± (2 % R + 0.05)
4.25.1 Endurance
(at 70 °C)
U= or U = Umax.;
1.5 h on; 0.5 h off
70 °C; 1000 h
± (2 % R + 0.05 )
DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions
TYPE Ø Dmax.
(mm)
L1 max.
(mm)
L2 max.
(mm)
Ø d
(mm)
MASS
(mg)
SFR16S 1.9 3.5 4.1 0.45 ±0.05 102
SFR25 2.5 6.5 7.5 0.58 ±0.05 205
SFR25H 2.5 6.5 7.5 0.58 ±0.05 205
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS PERMISSIBLE CHANGE (Rmax.)
P70 x R
Ø D
L1
Ø d
Outline
L2
P
P2
W
W0
D0
P1
P0
L1
L
F
H0
H1
H
α = 30° to 40°
α
α
aa
DIMENSIONS in millimeters
Pitch of components P 12.7 ± 1.0
Feed-hole pitch P012.7 ± 0.2
Feed-hole center to lead at topside at
the tape P13.85 ± 0.5
Feed-hole center to body center P26.35 ± 1.0
Lead-to-lead distance F 4.8 + 0.7 / - 0
Tape width W 18.0 ± 0.5
Minimum hold down tape width W05.5
Maximum component height H1 29
Lead wire clinch height H016.5 ± 0.5
Height of component from tape center H 19.5 ± 1
Feed-hole diameter D04.0 ± 0.2
Maximum length of snipped lead L 11.0
Minimum lead wire (tape portion)
shortest lead L12.5
SFR16S, SFR25, SFR25H
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HISTORICAL 12NC INFORMATION
• The resistors had a 12-digit numeric code starting with 23.
• The subsequent 6 digits for 1 % or 7 digits for 5 %
indicated the resistor type and packaging.
• The remaining digits indicated the resistance value:
- The first 3 digits for 1 % or 2 digits for 5 % indicated the
resistance value.
- The last digit indicated the resistance decade.
Resistance Decade for ± 5 % Tolerance
Resistance Decade for ± 1 % Tolerance
12NC Example
The 12NC of a SFR25 resistor, value 5600 ± 5 %, taped
on a bandolier of 5000 units in ammopack was:
2322 181 43562.
RESISTANCE DECADE LAST DIGIT
0.10 to 0.91 7
1 to 9.1 8
10 o 91 9
100 to 910 1
1 k to 9.1 k2
10 k to 91 k3
100 k to 910 k4
1 M to 9.1 M5
= 10 M6
RESISTANCE DECADE LAST DIGIT
1 to 9.76 8
10 to 97.6 9
100 to 976 1
1 k to 9.76 k2
10 k to 97.6 k3
100 k to 976 k4
1 M to 9.76 M5
= 10 M6
HISTORICAL 12NC - Resistor type and packaging
TYPE TOL.
23.. ... .....
BANDOLIER IN AMMOPACK BANDOLIER ON REEL
RADIAL TAPED STRAIGHT LEADS STRAIGHT LEADS
4000 UNITS 1000 UNITS 5000 UNITS 5000 UNITS
SFR16S
± 5 % - ..22 187 73... ..22 187 53... ..06 187 23...
± 1 % - - ..06 187 3... ..06 187 1....
Jumper - - ..06 187 90013 ..22 187 90346
SFR25
± 5 % ..06 184 03... ..22 181 53... ..22 181 43... ..22 181 63...
± 1 % - - ..22 188 2... ..06 181 8....
Jumper - ..22 181 90018 ..22 181 90019 ..06 181 90011
SFR25H ± 5 % ..06 186 03... ..22 186 16... ..22 186 76... ..06 186 63...
± 1 % - - ..22 186 3.... ..06 186 8....
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