1/4 0.25W
1/2 0.5W
RC 1/4 102 J B
Style
KAMAYA OHMFIXED CARBON COMPOSITION RESISTORS
RC
Features
1. Improved pulse endurance characteristics compared to carbon-film
devices.
2. Wide resistance range is available, 1 ohm ~ 22M ohm.
3. Stability Class : 10%
Dimensions
0.6 0.052.40.16.3 0.7RC1/4
3.60.2RC1/2
*Unit weight/pc.
422mg
222mg
Unit : mm
d
283
303
DLStyle
+0.07
0.05
0.7
+0.8
0.7
9.5
φd
H
HH
LφD
*Values for reference
Part Number Description
Example
Product Type
Rated Resistance
E24, 12, 6 Series
e.g. : 2R2=2.2 ohm
102=1k ohm
*Refer to Tape and Packaging information on pages 64.
*Packaging
B
H
TB
Horizontal Forming
52 mm Width Tape (Ammo Box)
TD
52 mm Width Tape (Reel)
Bulk (Straight)
Rated Dissipation
J5%
K10%
M20%
Tolerance on Rated Resistance
58 Product specifications contained in this catalogue are subject to change at any time without notice. Please confirm specifications with your order. RoHS
RC1/2
RC1/4
0.5
0.25
500
100
–55~+125
1 ohm~22M ohm
1 ohm~5.6M ohm
350
250 J(± 5%)
: E24
K(±10%)
: E12
M( ±20%)
: E6
at –55
°C
at +125
°C
1 ohm
1.1k ohm
11k ohm
110k ohm
1.1M ohm
~
~
~
~
~
1k ohm
10k ohm
100k ohm
1M ohm
22M ohm
+6.5
+10
+13
+15
+20
~0
~0
~0
~0
~0
+1
0
0
0
0
~
~
~
~
~
–5
–6
–7.5
–10
–15
100
0
-55 125
70
KAMAYA OHM
FIXED CARBON COMPOSITION RESISTORS RC
Style
Rated Dissipation
at 70°C
W
Rated Resistance
Range Rated Resistance
Range
Limiting Element
Voltage
V
Tolerance on Rated Resistance and
Perferred Number Series for Resistors
Combination of Rated Resistance Range and Temperature Coefficient of Resistance
Isolation
Voltage
V
Category Temperature
Range
°C
Ratings
Temperature Coefficient of Resistance
%
Note1. Rated Voltage = (Rated Dissipation)×(Rated Resistance). (d.c. or a.c. r.m.s. Voltage)
Note2. Limiting Element Voltage can only be applied to resistors when the resistance value is equal to or higher than the critical resistance value.
Note3. Critical Resistance Value is the resistance value at which the rated voltage is equal to the limiting element voltage.
Derating Curve
The derated values of dissipation for temperatures in excess of
70°C shall be indicated by the following Curve.
Storage
Temperature 2015°C, Humidity 60%R.H. Max, Recommendation Storing Term 6 months after shipped from factory.
Climatic Category
55/125/56
Lower Category Temperature 55°C
Upper Category Temperature +125°C
Duration of the Damp heat, Steady-State Test
56 days
Ambient Temperature(°C)
Percentage of the rated dissipation(%)
Area of recommended operation
Performance Characteristics JIS C 5201-1 : 1998
Description Requirements Test Methods
Clause 4.13
Clause 4.23
Clause 4.25.1
Clause 4.8
Clause 4.17
Clause 4.18
Clause 4.19
Clause 4.24
Clause 4.25.3
The applied voltage shall be 2.5 times of the
rated voltage or twice of the limiting element voltage,
whichever is the less Severe, 5s.
Clause 4.7
Clause 4.16.2
10N for 510s
Clause 4.16.4
180°C, 2 rotation
Rated voltage, 1.5h "ON", 0.5h "OFF",
70°C, 1,000h.
Measuring temperature : +20°C/55°C/
+20°C/+125°C/+20°C
235°C, 5s
After immersion into the flux, the immersion
into solder shall be carried out 4mm from the
body at 350°C for 3.5s.
5 cycles between 55°C and +125°C.
40°C, 95%R.H., 56 days, test a) , b) and c) of
Clause 4.24.2.1
125°C, no-load, 1,000h.
Voltage proof
Overload
Robustness
of terminations
Tensile
Torsion
Clause 4.16.3
5N twiceBending
Climatic sequence
Endurance at 70°C
Variation of resistance
with temperature
Solderability
Resistance to soldering
heat
Rapid change of
temperature
Damp test, steady state
Endurance at the upper
category temperature
No breakdown or flashover
See Ratings Table
R±(2%+0.1 ohm)
No visible damage, legible marking
R±(2%+0.1 ohm) No visible damage
R±(2%+0.1 ohm) No visible damage
R±(2%+0.1 ohm) No visible damage
In accordance with Clause 4.17.4.5
R±(3%+0.1 ohm)
No visible damage, legible marking
R±(2%+0.1 ohm) No visible damage
R±(10%+0.5 ohm)
Insulation resistance : R
100M ohm
No visible damage
R±(10%+0.5 ohm) No visible damage
Insulation resistance :
R1G ohm
R±(10%+0.5 ohm) No visible damage
Insulation resistance :
R1G ohm
R±(10%+0.5 ohm)
Insulation resistance :
R100M ohm
No visible damage, legible marking
Dry/Damp heat(12+12h cycle), first cycle./
Cold/Damp heat(12+12h cycle), remaining cycle./
D.C.Load.
RC1/4 100Va.c.,60s
RC1/2 500Va.c.,60s
Vblock method
59
Product specifications contained in this catalogue are subject to change at any time without notice. Please confirm specifications with your order. RoHS
Total
Total
100
60
20
0
1.20X107
1.196X107
2.992X106
2.997X106
2.990X106
2.984X106
0
15
3
2
4
6
0.0055
0.125
0.100
0.067
0.134
0.201
0.007
0.138
0.139
0.104
0.176
0.244
1.299×107
7.209×105
7.194×105
9.615×105
5.682×105
4.098×105
Criterion
(%)
R/R 5
Load Ratio
P/Pn
(%)
Total Testing Time
T(Hrs. )
Number of Failures
r(pcs.)
Failure Ratio
CL(60%)
Average Lifetime
(60% reliability level)
(Hrs.)
10
Typical Characteristics
•Surge Resistance Characteristics
Charging and discharging a 2,000 pF capacitor for 100 cycles.
"Typical characteristics indicate the mean values of R/R etc."
R/R(%)
Voltage(kV)
10
0
-20
-30
-10
0246810
c
b
a
12 14
RC1/4
a : 1.2M ohm
b : 33k ohm
c : 1k ohm
•Relationship between Load Ratio and
Category Temperature
R/R(%)
Ambient Temperrature(°C)
0
5
15
10
30 50 70 90 110 130
RC1/2 100k ohm n=50
2,500 hours
R/R(%)
Voltage(kV)
10
0
20
30
10
0246810
c
b
a
12 14
RC1/2
a : 1.2M ohm
b : 10k ohm
c : 1k ohm
Load FactorP/Ph=1.25
1.0 0.75 0.5
0
0.25
•Endurance at 70°C
R/R(%)
Testing Time(Hrs.)
0
1
3
2
0100 500 1000
RC1/4
RC1/2
220k ohm in an
atomosphere of 70°C
•Variation with Time
Condition : 5~35°C , 45~85% R.H.
R/R(%)
Variation with Time(month)
3
2
1
1
0
20 4681012
a : RC1/4 100k ohm
b : RC1/4 1k ohm
c : RC1/2 1M ohm
abc
•Frequency Characteristics
Rac/Rdc(%)
(MHz . M ohm)
100
75
25
0
50
0.1 0.5 1 5 10 50 100
a
b
a : RC1/4
b : RC1/2
KAMAYA OHM
FIXED CARBON COMPOSITION RESISTORS RC
Reliability Test
Endurance in humidity
Samples : RC1/4J,100 ohm,1k ohm,10k ohm,100k ohm×150 each. Total 2,400.
Conditions : Direct current voltage equivalent to the following load ratings in cycles on "ON" for 1.5h and "OFF" for 0.5h for
a total of 5,000h in an atmosphere of 40°C, 90 to 95%R.H.
60 Product specifications contained in this catalogue are subject to change at any time without notice. Please confirm specifications with your order. RoHS