KAMAYA OHM
FIXED CARBON FILM RESISTORS
RD
¥
Ratings
Style
RD1/6
Rated Dissipation Limiting Element Combinations of Rated Resistance Range and Combinations of Rated Resistance Range and
Tolerance on Rated Resistance
Temperature Coefficient of Resistance
at 70
°
C
Voltage
Rated Resistance Tolerance on Rated Temperature Coefficient
Rated Resistance
-6
W
V
Range
Range
Resistance
of Resistance 10 /
°
C
0.167
200
10 ohm 470k ohm G( 2%)
1.0 ohm 2.2M ohm J ( 5%)
0
0
0
0
0
350
450
700
1 ohm
5.1 ohm
4.7 ohm
43k ohm
1M ohm
Preferred Number
Series
for Resistors
Isolation
Voltage
V
300
Category Temperature
Range
°
C
47k ohm 430k ohm
RD1/4S
0.25
RD1/4
10 ohm 1M ohm
G( 2%)
1.0 ohm 2.2M ohm J ( 5%)
1,000 470k ohm
1,200 1.1M ohm 2.2M ohm
E24
350
1 ohm
110 ohm
100 ohm
33k ohm
1M ohm
500
55
155
250
0
0
0
0
350
650
36k ohm 470k ohm
700
RD1/2S
0.5
350
1,000 510k ohm
1,200 1.1M ohm 2.2M ohm
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.
Percentage of the rated dissipation(%)
¥
Derating Curve
55/155/56
100
The derated values of dissipation for temperatures in excess of
70
°
C shall be indicated by the following Curve.
¥
Climatic Category
Lower Category Temperature
Upper Category Temperature
Duration of the Damp heat, Steady-State Test
55
°
C
155
°
C
56 days
JIS C 5201-1 : 1998
Area of recommended operation
0
-55
70
155
Ambient Temperature(
°
C)
¥
Performance Characteristics
Description
Voltage proof
Variation of resistance
with temperature
Overload
See Ratings Table
Requirements
Clause 4.7
Clause 4.8
Clause 4.13
Test Methods
V block method RD1/6, 1/4S 300Va.c.,60S
RD1/4, 1/2S 500Va.c.,60S
Measuring temperature :
20
°
C/ 125
°
C/ 20
°
C
20
°
C/ 55
°
C/
No breakdown or flashover
R
(1% 0.05 ohm)
No visible damage, legible marking
Tensile
R
R
R
(1% 0.05 ohm) No visible damage
(1% 0.05 ohm) No visible damage
(1% 0.05 ohm) No visible damage
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 4.16.2 RD1/6,1/4S : 5N for 5 10s
RD1/4,1/2S : 10N for 5 10s
Clause 4.16.3
RD1/6,1/4S : 2.5N twice
RD1/4,1/2S : 5N twice
Leaded Resistors
Robustness
Bending
of terminations
Torsion
Solderability
Resistance to soldering
heat
Rapid change of
temperature
Climatic sequence
Damp test, steady state
Endurance at 70
°
C
Endurance at the upper
category temperature
Clause 4.16.4 180
°
C, 2 rotation
Clause 4.17
Clause 4.18
235
°
C, 2s
After immersion into the flux, the
immersion into solder shall be carried out
in Solder bath at 350
°
C for 3.5s.
5 cycles between
55
°
C and
155
°
C.
In accordance with Clause 4.17.4.5
R
R
(1% 0.05 ohm) No visible damage, legible marking
(1% 0.05 ohm) No visible damage
Clause 4.19
Clause 4.23
R
(5% 0.1 ohm) Insulation resistance : R 100M ohm
No visible damage
R
(5% 0.1 ohm) Insulation resistance : R 100M ohm
No visible damage, legible marking
R
(5% 0.1 ohm) No visible damage
Insulation resistance : R 1G ohm
R
(5% 0.1 ohm) No visible damage
Insulation resistance : R 1G ohm
Dry/Damp heat(12 12h cycle), first cycle./
Cold/Damp heat(12 12h cycle), remaining cycle./
D.C.Load.
40
°
C, 95%R.H., 56 days, test a),b) and c) of
Clause 4.24.2.1
Clause 4.24
Clause 4.25.1 Rated voltage, 1.5h "ON", 0.5h "OFF",
70
°
C, 1,000h.
Clause 4.25.3 155
°
C, no-load, 1,000h.
Product specifications contained in this catalogue are subject to change at any time without notice. Please confirm specifications with your order.
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