K M Y Last update: 2012.8.30 No.RC-K-HTS-0002-10
(Uncontrolled copy)
Specification
(Reference)
Title: FIXED CONDUCTIVE PATH RESISTORS
Style: RC1/2U
RoHS COMPLIANCE ITEM
Product specification contained in this specification
are subject to change at any time without notice
If you have any questions or a Purchasing Specification for any quality
Agreement is necessary, please contact our sales staff.
Issue Dept.: Research & Development Department Hokkaido Research Center
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 1/11
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
1. Scope
1.1 This specification covers the detail requirements for fixed conductive path resistors in compliance with the requirement] for
UL1492, style of RC1/2U.
1.2 Applicable documents
UL1676−1990 Discharge Path Resistors
CSA C22.2 No.1−94 Audio, Video, and Similar Electronic Equipment
JIS C 5201−1: 1998, JIS C 5201−2: 1998, JIS C 5201−2−1: 1998
IEC60115−1: 1999, IEC60115−2: 1982, IEC60115−2−1: 1982
2. Classification
Type designation shall be the following form to be registered to UL or CSA.
(Example) RC 1/2U 475 K B
1 2 3 4 5
Style
1 Carbon composition resistors
2 Rated dissipation
3 Rated resistance Example; 475 → 4.7MΩ
4 Tolerance on rated resistance
5 Packaging form
3. File No.
3.1 The file number to be designated by UL shall be as follows;
File No.: E151897
3.2 The file number to be designated by CSA shall be as follows;
File No.: CA109446−1
4. Rating
4.1 The ratings shall be in accordance with Table−1.
Table−1
Style Rated dissipation
(W)
Rated resistance range
(Ω)
Preferred number
series for resistors
Tolerance on rated
resistance
E12 K(±10%)
RC1/2U 0.5 1M∼10M E6 M(±20%)
Style Rated voltage
(V)
Isolation Voltage
(V)
Category temperature
range (°C) Applicable line voltage
RC1/2U 350 500 −55∼+125 250 Vac max. and/or 125 Vac max.
4.2 Climatic category
55/125/56 Lower category temperature − 55 °C
Upper category temperature +125 °C
Duration of the damp heat, steady state test 56days
4.3 Stability class
10% Limits for change of resistance:
−for long−term tests ±(10%+0.5Ω)
−for short−term tests ±(2%+0.1Ω)
Series designation (Style): FIXED CONDUCTIVE PATH RESISTORS
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 2/11
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
4.4 Derating
The derated values of dissipation at temperature in excess of 70 °C shall be as indicated by the following curve.
Figure−1 Derating curve
5. Packaging form
The standard packaging form shall be in accordance with Table−2.
Table−2
Symbol Packaging form Standard packaging
quantity / units Style
B Bulk (Straight lead) 500 pcs. See 6.1
H Horizontal forming Loose package 500 pcs. See 9
TB 52mm width taping box 2,000 pcs.
TD 52mm width taping reel 3,000 pcs. See 10
6. Dimensions
6.1 Straight lead type
Figure−2
Table−3 Unit:mm
Style L φD H φd
RC1/2U +0.8
9.5
−0.7 3.6 ± 0.2 28 ± 3 +0.07
0.7
−0.05
H HL
φ
d
φ
D
−
55
100
70 125
0
A
rea of recommended
operation
Percentage
of the rated
dissipation
A
mbient temperature (°C)
(%)
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 3/11
Product specification contained in this specification are subject to change at any time without notice.
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7. Marking
7.1 Marking of product
The rated resistance, tolerance on rated resistance and the other applicable mark shall be marked by five color coding on
the surface of resistor.
The color coding shall be based on JIS C 5062-1997 ”Marking codes for resistors and capacitors”．
The tolerance on rated resistance tolerance M(±20%) shall be none color of the forth color code.
First color
Band
Second
color band
Third color
band
Fourth color
band
Rated resistance (Ω)
Color
First digit Second digit Multiplier Tolerance on rated
resistance
Fifth color band
Black 0 0 − − −
Brown 1 1 − − −
Red 2 2 − − −
Orange 3 3 − − −
Yellow 4 4 − − −
Green 5 5 105 − Safety standards recognition on a resistor
Blue 6 6 106 − −
Purple 7 7 − − −
Grey 8 8 − − −
White 9 9 − − −
Silver − − − ±10% −
− − − − ±20% −
7
．
2 Marking of package
The label of a minimum package shall be legibly marked with follows;
1).Rated dissipation and Applicable line voltage
2).Type designation
3).Lot No.
4).Quantity
5).Manufacturer's name or trade mark
6).UL recognized component mark and/or CSA component acceptance mark.
7).Others
Example)
Fifth color band: Use green to indicate that this resistor is
recognized by Safety standard.
Fourth color band: Tolerance on resistance: K or M
K(±10%): Silver
M(±20%): Not colored (Just the space)
Second color band (Second significant figure)
First color band (First significant figure)
Third color band (Multiplier)
Rated resistance
0.5W−250V MAX
RC1/2 U 225K
2.2 MΩK
(
16−10A
)
500PCS
P/N 123456789
L/N 7050812345
KAMAYA OHM JAPAN
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 4/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
8. Performance
8.1 The standard condition for tests shall be in accordance with Sub−clause 4.2, JIS C 5201−1: 1998.
8.2 The performance shall be satisfied in Table−4.
Table−4(1)
No. Test items Condition of test (JIS C 5201−1) Performance requirements
1 Visual examination Sub−clause 4.4.1
Checked by visual examination.
As in 4.4.1
The marking shall be legible, as
checked by visual examination.
2 Dimension
Resistance
Sub−clause 4.4.2
Sub−clause 4.5
As specified in Table−3 of this
specification.
As in 4.5.2
The resistance value shall
correspond with the rated resistance
taking into account the specified
tolerance.
3 Voltage proof Sub−clause 4.7
Method: V−block method
Test voltage: Alternating voltage with a peak
value of 1.42 times the insulation voltage.
Duration: 60 s ± 5 s
No breakdown or flash over
Sub−clause 4.17
Without ageing
Method: 1 (The solder bath method)
Bath temperature: 235 °C ± 5 °C
Immersion time: 5 s ± 0.5 s
Depth immersion: A point within about 4mm
from the resistor body
Sub−clause 4.13
The applied voltage shall be twice the limiting
element voltage.
Duration: 5 s
Good thinning as evidenced by free
flowing of the solder with wetting of
the terminations.
Visual examination No visible damage
Legible marking
4 Solderability
Overload
(in the mounted state)
Resistance ∆R ≤ ± (2%+0.1Ω)
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 5/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
Table−4(2)
No Test items Condition of test (JIS C 5201−1) Performance requirements
Robustness of termination
Tensile
Sub−clause 4.16
Sub−clause 4.16.2
The force; 10N
Duration: 10 s ± 1 s
Bending
Sub−clause 4.16.3
Method 1
Bending times: 2 times
Bending force: 5N
Torsion Sub−clause 4.16.4
Method A: Severity 2 (two successive
Rotations of 180°)
Visual examination
Resistance
No visible damage
∆R ≤ ± (2%+0.1Ω)
5
Resistance to soldering
Heat
Sub−clause 4.18
Method: 1B
Solvent temperature: 350 °C ± 10 °C
Immersion time: 3.5 s ± 0.5 s
Depth of immersion:A point within 4±0.8mm
from the resistor body
Visual examination
Resistance
No visible damage
Legible marking
∆R ≤ ± (3%+0.1Ω)
Rapid change temperature
Sub−clause 4.19
Lower category temperature: −55 °C
Upper category temperature: +125 °C
Duration of exposure at each temperature: 30
min.
Number of cycles: 5 cycles.
Visual examination
Resistance
No visible damage
∆R ≤ ±(2%+0.1Ω)
6
Vibration Sub−clause 4.22
Frequency endurance test
Frequency range: 10 Hz to 500 Hz
Amplitude: 0.75 mm or acceleration 98 m/s2
(whichever is the less severe)
Total duration: 6 h
Visual examination
Resistance
No visible damage
∆R ≤ ±(2%+0.1Ω)
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 6/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
Table−4(3)
No Test items Condition of test (JIS C 5201−1) Performance requirements
Sub−clause 4.23
Sub−clause 4.23.2
Test temperature: + 125 °C
Duration: 16 h
Sub−clause 4.23.3
Test method: 2
Test temperature: 55 °C
[Severity(2)]
Sub−clause 4.23.4
Test temperature −55 °C
Duration: 2h
8 kPa
Sub−clause 4.23.6
Test method: 2
Test temperature: 55 °C
[Severity (2)]
Number of cycles: 5 cycles
Sub−clause 4.23.7
The applied voltage shall be the limiting
element voltage .
Duration: 1 min.
7 Climatic sequence
−Dry heat
−Damp heat, cycle
(12+12hour cycle)
First cycle
−Cold
−Low air pressure
−Damp heat, cycle
(12+12hour cycle)
Remaining cycle
−D.C. load
Visual examination
Resistance
Insulation resistance
No visible damage
Legible marking
∆R ≤ ± (10%+0.5Ω)
R ≥ 100 MΩ
8 Endurance at 70 °C
Sub−clause 4.25.1
Ambient temperature: 70 °C ± 2 °C
Duration: 1000 h
The voltage shall be applied in cycles of 1.5 h
on and 0.5 h.
The applied voltage shall be the limiting
element voltage.
Examination at 48 h, 500 h and
1000 h:
Visual examination
Resistance
Examination at 1000 h:
Insulation resistance
No visible damage
∆R ≤ ± (10%+0.5Ω)
R ≥ 1 GΩ
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 7/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
Table−4(4)
No Test items Condition of test (JIS C 5201−1) Performance requirements
At −55°C
Resistance
range(Ω)
Temperature
coefficient(%)
R=1MΩ +15∼0(%)
R>1MΩ +20∼0(%)
At +125°C
Resistance
range(Ω)
Temperature
coefficient(%)
R=1MΩ 0∼−10(%)
9 Variation of resistance with
temperature
Sub−clause 4.8
−55 °C / +20 °C
+20 °C / +125°C
R>1MΩ 0∼−15(%)
10 Damp heat, steady state Sub−clause 4.24
Ambient temperature: 40 °C ± 2 °C
+2
Relative humidity : 93 %
−3
a) 1st group: without voltage applied.
b) 2nd group: The d.c. voltage shall be applied
continuously.
The voltage shall be accordance with
Sub−clause 4.24.2.1 b).
c) 3rd group: The d.c. voltage shall be applied
continuously.
The voltage: 20 V ± 2 V
Visual examination
Resistance
Insulation resistance
No visible damage
Legible marking
∆R ≤ ± (10%+0.5Ω)
R ≥ 100 MΩ
11 Dimensions (detail)
Endurance at upper category
temperature
Sub−clause 4.4.3
Sub−clause 4.25.3
Ambient temperature: 125 °C ± 2 °C
Duration: 1000 h
Examination at 48 h, 500 h and
1000 h:
Visual examination
Resistance
Examination at 1000h:
Insulation resistance
As in Table−3
No visible damage
∆R ≤ ± (10%+0.5Ω)
R ≥ 1 GΩ
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 8/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
8.3 The test in accordance with UL 1676 and/or CSA C22.2 No.1−94 Paragraph18.
8.3.1 Environmental and Electrical
Table−5(1)
No Test items Condition of test Performance requirements
1 DC resistance Paragraph 4.5 of JIS C 5201−1
Classification of test voltage：A
Within the specified tolerance of
nominal resistance.
2 Humidity conditioning
Paragraph 4.2 and 4.3 of UL 1676
Paragraph 18.5.2 and 18.5.3 of CSAC22.2 No.1
Test conditions:Test temperature:40±2℃
Relative humidity:90∼95%
Test period：21 days(504h)
After completion of the test, measure the
resistance within 5min.
12MΩ max.
And ∆R/R of initial resistance value
for No.1 shall be within ±50%
3 Discharge
Paragraph 4.4 and 4.5 of UL 1676
Paragraph 18.5.4 and 18.5.5 of CSAC22.2 No.1
Test samp l e s :Each resistor tested as described in
paragraph No.2.
Test cycle:Discharge of 10 times.
Test circuit : Figure−3
After completion of the test, measure the
resistance for 15min. to 1h.
12MΩ max.
And ∆R/R of initial resistance value
for No.1 shall be within ±50%
Dielectric Voltage-withstand
Paragraph 4.6, 4.7, 4.8, 4.9 and
4.10 of UL 1676
Paragraph 18.5.6.1,18.5.6.2,18.5.6.3.18.5.6.4 and
18.5.6.5 of CSA C22.2 No.1
Test samp l e s :Each resistor tested as described in
paragraph No.3.
Test condition:1000Vac, 1 minute.
After completion of the test, measure the
resistance for 15min. to 1h.
12MΩ max.
And ∆R/R of initial resistance value
for No.1 shall be within ±50%
4
Note;* The sensitivity of the test power supply shall be able to indicate pass or failure, when it is connected to 120kΩ.
* When the resistor dissipates more than rated power, it can be cooled by artificial means.
Over voltage test
Paragraph 5.1 and 5.2 of UL 1676
Paragraph 18.6.1 and 18.6.2 of CSAC22.2 No.1
Test samples : The resistor that dissipates more
than rated power during the Dielectric
voltage-withstand test.(Paragraph No.4)
Test conditions :
①Line voltage 125Vac; 1300Vac,4s
②Line voltage 126∼250Vac; 1500Vac,4s
After completion of the test, measure the
resistance for 1h.
∆R/R of initial resistance value for
No.5 shall be within ±10％.
5
Note;* The resistor are not to be artificially cooled during the test.
6 Pulling test Paragraph 6.1 of UL 1676
Pull force : 22.2N for lead wire
Duration : 1 min.
No evidence of mechanical
damage.
7 Torsional test Paragraph 7.1, 7.2, and 7.3 of UL 1676
The resistor shall be bent through an angle of 90
degrees at a point 6.4mm from the resistor body.
The lead wire shall be clamped at 1.2±0.4mm.
The body shall be fixed.
360 degrees about its original axis at a rate of
2∼5s per 360 degrees. Torsion condition 3 times
of different directions.
No evidence of mechanical
damage.
No damage to the resistor body.
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 9/11
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
Ｖac:120Vac or 240Vac Capacity : 30A min.
Ｔ :Optional isolation transformer for pulse blocking,
having a 1 : 1 turn ration and output capability of 25A min.
Ｆ :Fuse rated 30A, 250V
Ｌ :Choke 3mH 0.03Ω
Ｓ :High−voltage switch
Ｃｄ:Dump capacitor 0.01µF
Ｖdc:10kv direct−current source of power supply
Ｒ :Resistor of test sample
Discharge:Every 5s
Figure−3 Circuit for discharge test
9. Horizontal forming
Figure−4
Table−6 Unit:mm
Style A B P
RC1/2U 15.0 ± 0.5 5.0 ± 0.5 1.8max.
T
Vac
FL S
Vdc
Cd
R
A
B
P
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 10/11
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
10. Taping design and dimensions
10.1 Applicable document JIS C 0806−1: 1999
10.2 Taping design and dimensions shall be in accordance with Figure−5 and Table−7.
Figure−5
Table−7 Unit:mm
Style W P
｜
L1-L2
｜
Z S T t
RC1/2U +1.6
52.4 -1.4 5.08 ± 0.38 1.0max. 1.0max. 3.2min. 6.0 ± 0.5 0.5max.
10.3 Notes
10.3.1 The direction of color codes should be on unified.
10.3.2 No component shall be missed.
10.3.3 The wire leads shall be free from kinks and bends.
10.3.4 Pitches tolerance is 2mm(100±2mm) for 20 pitches.
10.3.5 The edge waving of tape shall be not more than ±1.0mm through a length of 300mm.
10.3.6 The reinforcement of the tape cutting should be reinforced by a new tape (30mm min.) in 3mm limits and insuring
1 pitch dimension as shown in Figure−6.
Unit:mm
Figure−6
Z
L1L2
S
T
t
P
W
1
.
5min
.
3max
.
15min
.
30min
.
A
dhesive tape
Carrier tape
(
Non
−
adhesive
)
Adhesive tape
Cat tape
K M Y Drawing No: RC−K−HTS−0002 /10
Title: FIXED CONDUCTIVE PATH RESISTORS
RC1/2U Page: 11/11
Product specification contained in this specification are subject to change at any time without notice.
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Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2012.8.30
10
．
2 Taped and box
The box shall be of the design and physical dimensions in accordance with Figure-7 and Table−8.
The box of materials shall be carton.
Figure−7
Table−8 Unit:mm
Style Symbol a b c
RC1/2U TB 65 ± 5 75 ± 5 455 ± 5
10.3 Taping reel
The reel shall be of the design and physical dimensions in accordance with Figure−8 and Table−9.
Figure−8
Table−9 Unit:mm
Style Symbol A *A′ B C1 C2 d *Y
RC1/2U TD 260 ± 5 280 75 ± 5 60.4 ± 1.0 78 ± 1 14.5 ± 0.5 3
*Reference
11. Order of priority
In case it makes the difference between Safety standard (UL 1676−1990 and CSA C22.2 No.1−94) and this specification,
Safety standard has priority.
12. Handling recommendations
This resistor's element is made by mixing materials of carbon conductor and other suitable materials. Lead wires are molded
into the edge of resistive elements.
Following consideration is required.
12.1 Soldering
As high temp. and longtime soldering will be made on resistance value change widely, solder the resistor following
conditions.
(1)For flow soldering: Temp. of solder bath 250℃ max. and immersion time 3s max.
(2)For soldering iron: Temp. of solder iron 350℃ max. and time 3s max.
12.2 Storage
Avoid places high temperature and high humidity. (Recommend: 6 months max.)
Following conditions are required for storage.
(1) Please keep“first in-first out”based inventory control.
(2) Store at recommended condition at 35℃ max. and below 50∼60%R.H.
c
b
a
Window
Marking
B
Marking
A
′
A
C1
C2
d
Y
