Token provides KNP-R wirewound resistors. Power precision wirewound resistors KNP-R series meeting MIL-R-26E (U and V characteristics) and surface temperature (hot spot) 375°C max. Resistors with a wide range of 0.01Ω ~ 82kΩ, covering applications from precision to power. Products with lead-free terminations meet EU RoHS and China RoHS requirements.

Characteristics U:
275°C Maximum hot spot temperature. 1% Maximum ΔR in 1000 hours load life.

Characteristics V:
375°C Maximum hot spot temperature. 3% Maximum ΔR in 1000 hours load life.

Token KNP-R series have an operating temperature range of -55°C ~ +375°C, They must be derated at high ambient temperatures according to the chart below.

 Power precision wirewound resistors
Power precision wirewound resistors Power Derating Curve Power precision wirewound resistors Dimensions
Technical Specifcations
Type MIL
-
R-26E		 Power Rating
(W)		 Max. Working
Voltage (V)		 Resistance Range (Ω) Dimensions (mm)
U V U V 0.1% 0.25% 0.5% 1% 3% 5% L±0.81 D±0.81 d±0.1
KNP-R1/4 - 0.40 - 20 - 10~950 1~3.4K 6.35 1.98 0.51
KNP-R1/2 RW70 0.75 - 29 - 10~1.3K 1~4.9K 7.92 1.98 0.51
KNP-R1A - 1.00 - 53 - 1~2.7K 0.1~10.4K 10.31 2.36 0.64
KNP-R1 RW69 1.10 - 62 - 1~4.0K 0.1~15K 13.49 2.36 0.64
KNP-R2A - 2.50 3.25 138 157 1~8.6K 0.01~32.3K 12.70 5.33 0.81
KNP-R2 RW79 3.00 3.75 135 148 1~5K 0.01~2K 13.49 4.06 0.81
KNP-R3A - 3.00 3.75 135 148 1~6.5K 0.01~34.5K 14.27 5.33 0.81
KNP-R3 - 3.25 4.75 185 220 1~11.4K 0.01~42.1K 20.62 5.33 1.02
KNP-R4 RW67 4.00 5.50 210 250 1~12.7K 0.01~47.1K 15.88 7.62 1.02
KNP-R5 RW74 5.00 6.50 330 376 0.5~24.5K 0.01~51K 22.22 7.62 1.02
KNP-R7 RW68 7.00 9.00 504 576 0.5~41.4K 0.01~75K 30.94 9.52 1.02
KNP-R10 RW78 10.00 13.00 799 911 0.5~71.3K 0.01~82K 45.21 9.52 1.02

Electrical Performance
Test Items Test Method Specifications
Short Time Overload 2.5 times of rated voltage 5 sec. ΔR±(2%+0.05Ω)
Rated Load Rated wattage 30 minutes. ΔR±(1%+0.05Ω)
Voltage Withstanding 500VAC 1 minute. ΔR±(1%+0.05Ω)
Insulation Resistance 500V 20MΩ
Temp. Cycle -20°C ~ 85°C 5 cycles ΔR±(1%+0.05Ω)
Soldering After Resistance 235°C for 3 sec ΔR±(0.5%+0.05Ω)
Incombustibility 16 times of rated wattage for 5 min. Not flamed
Load Life +25°C, 1.5Hrs on ~ 0.5Hrs off cycle, 1000 Hrs. U: ΔR±(1%+0.05Ω)
V: ΔR±(3%+0.05Ω)

How to Order
KNP-R3A U 3R85 B P
Product Type
Characteristic
U 275°C
V 375°C
Resistance
R100 0.1Ω
1R 1Ω
100R 100Ω
1KR 1000Ω
Resistance Tolerance
B ±0.1%
C ±0.25%
D ±0.5%
F ±1%
H ±3%
J ±5%
Packaging
TB Taping Box
P Bulk

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