Datasheet

Note:

Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value

ELECTRICAL CHARACTERISTICS

STYLE CFR-12 CFR25S CFR-25 CFR50S CFR-50 CFR1WS CFR100 CFR2WS CFR200 CFR3WS

Power Rating at 70°C 1/6W 1/4W 1/2W 1W 2W 3W

Maximum Working Voltage 150V 200V 250V 300V 350V 400V 500V

Maximum Overload Voltage 300V 400V 500V 600V 700V 800V 1,000V

Voltage Proof 300V 400V 500V 700V 1,000V

Resistance Range 1 Ω - 10M Ω & 0 Ω for E24 series value

Operating Temp. Range -55°C to +155°C

Temperature Coefcient see Table 1

Note: Special value is available on request

ENVIRONMENTAL CHARACTERISTICS

PERFORMANCE TEST TEST METHOD APPRAISE

Short Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. ±0.75%+0.05 Ω

Voltage Proof IEC 60115-1 4.7 in V-block for 60 Sec., test voltage by type By type

Temperature Coefcient IEC 60115-1 4.8 -55°C to +155°C By type

Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >1,000M Ω

Solderability IEC 60115-1 4.17 235±5°C for 3±0.5 Sec. 95% Min. coverage

Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 5±0.5 Min. with ultrasonic

No deterioration of

coatings and markings

Robustness of Terminations IEC 60115-1 4.16 Direct load for 10 Sec. in the direction of the terminal leads ≥2.5kg (24.5N)

Periodic-pulse Overload IEC 60115-1 4.39 4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off) ±1.0%+0.05 Ω

Damp Heat Steady State IEC 60115-1 4.24 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV ±3.0%+0.05 Ω

Endurance at 70°C IEC 60115-1 4.25 70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) ±3.0%+0.05 Ω

Temperature Cycling IEC 60115-1 4.19 -55°C  Room Temp.  +155°C  Room Temp. (5 cycles) ±1.0%+0.05 Ω

Resistance to Soldering Heat IEC 60115-1 4.18 260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body ±1.0%+0.05 Ω