CARBON FILM FIXED RESISTOR
Resistance Tolerance ±5%

Dimensions (mm)
Normal Size
Style L Max D Max d +0.02
-0.05
CR - 12 3.5 1.85 0.5
CR - 25 6.8 2.50 0.6
CR - 50 10.0 3.5 0.6
CR - 100 16.0 5.5 0.8
CR - 200 17.5 6.50 0.8
Normal Size Specifications
Style Rating Max. Working
Voltage
Max. Overload
Voltage
Resistance Range
CR - 12 0.125W 200V 400V 1R - 20M
CR - 25 0.25W 250V 500V 1R - 10M
CR - 50 0.5W 350V 700V 1R - 10M
CR - 100 1W 500V 1,000V 1R - 10M
CR - 200 2W 500V 1,000V 1R - 10M
*Flame retardant type available.
*Too low or too high ohmic value can be supplied on a case to case basis.

Dimensions (mm)
Small Size
Style L Max D Max d +0.02
-0.05
CR - 25-S 3.5 1.85 0.5
Resistor Color Code Reader
CR - 50-S 9.0 3.00 0.6
CR - 50-SS 6.8 2.50 0.6
CR - 100-S 12.0 5.00 0.7
CR - 200-S 16.0 5.50 0.8
CR - 300-S 17.5 6.50 0.8
Small SizeSpecifications
Style Rating Max. Working
Voltage
Max. Overload
Voltage
Resistance Range
CR - 25-S 0.25W 200V 400V 1R - 1M
CR - 50-S 0.5W 250V 500V 1R - 10M
CR - 50-SS 0.5W 350V 700V 1R - 10M
CR - 100-S 1W 500V 1,000V 1R - 10M
CR - 200-S 2W 500V 1,000V 1R - 10M
CR - 300-S 3W 500V 1,000V 1R - 10M
*Flame retardant type available.
*Lower or higher ohmic value can be supplied on a case by case basis.


Performance Specifications
Characterisitcs Test Methods Limits
Temperature coefficient
JIS -C -5202 5.2
Natural resistance change per temp. degree centigrade
R2 -R1 x 106 (PPM/°C)
R1 (t2 - t1)

R1: Resistance value at room temperature (t1)
R2: Resistance value at room temp. + 100°C (t2)
Test pattern: Room temp., Room temp. +100°C
Range T.C.R.
< 10 0350PPM/°C
11 - 99K 0350PPM/°C
100K-1M 0 ~ -700PPM/°C
1M1 -10M 0 ~-1500PPM/°C
Dielectric withstanding
voltage
JIS - C - 5202 5.7
Resistors shall be clamped in the trough of a 90°
metalic V-block and shall be tested at AC potential
respectively
specified in the above list for
60 +10 / -0 seconds.
No evidence of flashover, mechanical damage, arcing or insulation break down.
Temperature cycling
JIS - C - 5202 7.4
Resistance change after continuous five cycles for duty
cycle specified below
:
Step Temperature Time
1 -55°C ± 3°C 30 mins
2 Room temp. 10 ~ 15 mins
3 +155°C ± 2°C 30 mins
4 Room temp. 10 ~ 15 mins
Resistance change rate is ± (1% +0.05 ) Max. with no evidence of mechanical damage
Short-time overload
JIS - C - 5202 5.5
Permanent resistance change after the application of a potential of 2.5 times RCWV for 5 seconds. Resistance change rate is
± (1% +0.05 ) Max. with no evidence of mechanical damage.
Load life in humidity
JIS - C - 5202 7.9
Resistance change after 1,000 hours operating at RCWV
with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" in a
humidity test chamber controlled at 40
°C ± 2°C and
90- 95% relative humidity.
Resistance value R/R
Normal
type
Less than 100K ±3%
100K or more ±5%
Flame
retardant
type
Less than 100K ±5%
100K or more ±10%
Load life
JIS - C - 5202 7.10
Permanent resistance change after 1,000 hours operating at RCWV, with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" at 70°C ± 2°C ambient.
Resistance value R/R
Normal
type
Less than 156K ±2%
56K or more ±3%
Flame
retardant
type
Less than 100K ±5%
100K or more ±10%
Insulation resistance
JIS - C - 5202 5.6
Resistors shall be clamped in the trough of a 90°
metalic V-block and shall be tested at DC potential
respectively
specified in the above list for
60 +10 / -0 seconds.
Insulation resistance is 10,000M min.
Terminal strength
JIS - C - 5202 6.1
Direct load: Resistance to a 2.5 kg direct load for 10 seconds in the direction of the longitudinal axis of the terminal leads.
Twist test: Terminal leads shall be bent through 90
° at a point of about 6mm from the body of the resistor and shall be rotated through 360° about the original axis of the bent terminal in alternating direction for a total of 3 rotations.
No evidence of mechanical damage
Resistance to soldering
heat JIS - C - 5202 6.4
Permanent resistance change when leads immersed to 3.2 - 4.8 mm from the body in 350°C ± 10°C solder for 3 ± 0.5 sec. Resistance change rate is ± (1%+0.05) Max. with no evidence of mechanical damage
Solderability
JIS - C - 5202 6.5
The area covered eith a new, smooth, clean, shiny and continuous surface free from concentrated pinholes.
Test temp. of solder: 235
°C ± 5°C
Dwell time in solder: 3
+0.5 / -0 seconds
95% coverage min.
Resistance to solvent
JIS - C - 5202 6.9
Specimens shall be immersed in a bath of trichroethane completely for 3 minutes with ultrasonic. No deterioration of protective coatings and markings

ORDERING INFORMATION
Example: .25W 1k 5%
CR-25
1001
J
Type
Resistance
4 digit <100 ohm use R for decimal. >100 ohm 4th digit is multiplier.
Tolerance
J = 5%
G = 2%
TO ORDER PRODUCTS
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167

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