POWER WIREWOUND RESISTORS

Power Wirewound Resistors

KNP

Many wirewound resistor manufacturers have the capability to manufacture noninductive, fusible, or high pulse withstanding resistors, but Tokenchina's custom wirewound capabilities extend beyond the usual fusible or noninductive offerings.


A range of compact flameproof power wirewound resistors respond to growing industry demands for smaller sizes for a given power rating. The KNP series has been designed to give enhanced pulse handling capability and increased flameproof protection. These resistor is ideal for high reliability industrial application where large power dissipation is required.


The series is RoHS compliant with Pb-free terminations, please contact our sales representative for more information.


wirewound resistors

Features

  • Custom noninductive wirewound, High frequency applications.
  • Custom fusible wirewound, Surge load circuit protection
  • Large power dissipation
  • High-Power, Low-Cost


Applications

  • Test & Measurement, Surge Protection and Voltage Divider
  • Motor Control Applications, Televisions, Computer Monitors
  • Power Supply, PFC control, Discharge Path Resistor
  • Dishwashers, Clothes Dryers, Washing Machines
  • Control Module for Surge Protection


Construction
Produced on a high purity ceramic substrate, the KNP resistor is assembled with interference-fit end caps to which are welded terminations. The resistive element (metal alloy wire) is wound on a high purity ceramic rod and welded to the caps. Flameproof vitreous enamel, silicone, cement, or epoxy coating is applied prior to marking with indelible link.

Dimensions (mm) - Power Wirewound KNP

Type Rated
Watts
Dimensions (mm) Resistance
Range (Ω)
Tolerance
D ± 0.5 L ± 1 H ± 3 d ± 0.05
KNP KNP-50 1/2W 4 9.0 26 0.50~0.55 0.1-50 Ω ± 1%
± 2%
± 5%
KNP-100 1W 4 9.0 26 0.50~0.55 0.1-50 Ω
KNP-100B 1W 4.5 11.5 26 0.75~0.80 0.1-100 Ω
KNP-200 2W 4.5 11.5 26 0.75~0.80 0.1-100 Ω
KNP-200B 2W 5.5 15.5 35 0.75~0.80 0.1-200 Ω
KNP-300 3W 5.5 15.5 35 0.75~0.80 0.1-200 Ω
KNP-400 4W 6.5 17.5 35 0.75~0.80 0.1-300 Ω
KNP-500 5W 6.5 17.5 35 0.75~0.80 0.1-400 Ω
KNP-500B 5W 8.5 24.5 38 0.75~0.80 0.1-400 Ω
KNP-600 6W 8.5 24.5 38 0.75~0.80 0.1-1K Ω
KNP-700 7W 8.5 24.5 38 0.75~0.80 0.1-1.5K Ω
KNP-800 8W 8.5 42 38 0.75~0.80 0.1-2K Ω
KNP-1000 10W 8.5 42 38 0.75~0.80 0.1-2K Ω
KNP-1000B 10W 8.5 54 38 0.75~0.80 0.1-3K Ω
KNP-1250 12.5W 8.5 54 38 0.75~0.80 0.1-3K Ω

Electrical Characteristics - Power Wirewound KNP

TEST ITEMS CONDITION SPEC
Load Life 70 °C on ~ off cycle 1000 hrs. ± 5 %
Rated Load Rated wattage 30 min. ± 1 %
Incombustibility 16 times of rated wattage for 5 min not flamed
Short Time Overload 10 times of rated wattage for 5 sec. ± 2 %
Voltage Withstanding 500VAC 1 min ± 1 %
Temperature Cycling -20 °C ~ 85 °C 5 cycles ± 1 %
Operating Temperature Range -55 °C ~ 275 °C (0W)  
Resistance Temp. Coeff. Room temperature/100 °C up ± 300 PPM / °C
Moisture-Proof Load Life 40 °C 95% RH on ~ off cycle 500 hrs. ± 3 %

How to Order - Power Wirewound KNP

KNP-100 1W 1R J TB/P
Product Type
Rated Power
Resistance Value(Ω)
Resistance Tolerance
Packaging

PDF download

KNP Series - Power Wirewound Resistors