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■High Power & Ultra High Power Rating Electrical Specifications
Resistance
Range
Item
Type
Power Rating
at 70°C
Operating Temp.
Range
Max. Operating
Voltage
Max. Overload
Voltage
±1% ±5%
TCR
(PPM/°C)
CR-02 (0402) 1/10W 50V 100V
CR-03 (0603) 1/8W 50V 100V
CR-05 (0805) 1/3W 150V 300V
CR-06 (1206) 1/3 *1/2W 200V 400V
CR-10 (1210) 1/2 *3/4W 200V 400V
CR-0A (2010) 1W 200V 400V
CR-12 (2512) 2W
-55 ~ +155°C
250V 500V
1Ω - 9.76Ω
10Ω - 1MΩ
1.02MΩ - 10MΩ
±200
±100
±200
*: Ultra High Power
Operating Voltage=√(P*R) or Max. operating voltage listed above, whichever is lower.
Overload Voltage=2.5*√(P*R) or Max. overload voltage listed above, whichever is lower.
Viking is capable of manufacturing the optional spec based on customer’s requirement.
■Environmental Characteristics
Requirement
Item
±1% and Below ±5% Jumper
Test Method
Temperature Coefficient of
Resistance (T.C.R.) As Spec. -55°C~+125°C, 25°C is the reference
temperature
Short Time Overload ±(1.0%+0.05Ω) ±(2.0%+0.05Ω)<50mΩ RCWV*2.5 or Max. overload voltage for 5
seconds, 2 seconds for high power series
Insulation Resistance ≥10G Max. overload voltage for 1 minute
Endurance ±(2.0%+0.10Ω) ±(3.0%+0.10Ω)<100mΩ 70±2°C, Max. working voltage for 1000 hrs with
1.5 hrs “ON” and 0.5 hrs “OFF”
Damp Heat with Load ±(2.0%+0.10Ω) ±(3.0%+0.10Ω)<100mΩ 40±2°C, 90~95% R.H. Max. working voltage for
1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF”
Dry Heat ±(1.0%+0.05Ω) ±(1.5%+0.10Ω)<50mΩ at +125/+155°C for 1000 hrs
Bending Strength ±(1.0%+0.05Ω) ±(1.0%+0.05Ω)<50mΩ Bending once for 5 seconds
2010, 2512 sizes: 2mm Other sizes: 3mm
Solderability 95% min. coverage 245±5°C for 3 seconds
Resistance to Soldering Heat ±(0.5%+0.05Ω) ±(1.0%+0.05Ω)<50mΩ 260±5°C for 10 seconds
Voltage Proof No breakdown or flashover 1.42 times RCWV (RMS) for 1 minute
Leaching Individual leaching area ≦5%
Total leaching area ≦ 10% 260±5°C for 30 seconds
Rapid Change of Temperature ±(0.5%+0.05Ω) ±(1.0%+0.05Ω)<50mΩ -55°C to +125/+155°C, 5 cycles
Reference Standards: IEC 60115-1, 60068-2-58; JIS-C 5201-1
Storage Temperature: 25±3°C; Humidity < 80%RH