NON-INDUCTIVE WIREWOUND

Non-Inductive Wirewound Resistors

KNPN

Tokenchina Electronics has introduced a non-inductive version of its standard KNP series, leaded wirewound resistors. The KNPN series offers the expected performance of a wirewound resistor with the added characteristic of vastly improved inductance, making it suitable for high-switching applications. The power of this non-inductive winding is available in standard KNP sizes from 0.5 watts up to 6 watts.


A non-inductively wound wirewound has one winding in one direction and one in the other direction; known as Ayrton Perry winding, and a byproduct of this design is that it creates two resistors in parallel in each device. Because of this, non-inductive wirewounds have an upper resistance range limit of half the value possible with a standard winding. For ease of use,


Tokenchina Electronics has listed a non-inductive resistance value range on its datasheets along with the standard range. Full line KNPN products meet RoHS compliant, 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

Dimensions (mm) - Non-Inductive Wirewound KNPN

Type Rated
Watts
Dimensions (mm) Resistance
Range (Ω)
Tolerance
D ± 0.5 L ± 1 H ± 3 d ± 0.05
KNPN KNPN-50 1/2W 4 9.0 26 0.50~0.55 0.1-10 Ω ± 1%
± 2%
± 5%
KNPN-100 1W 4 9.0 26 0.50~0.55 0.1-10 Ω
KNPN-100B 1W 4.5 11.5 26 0.75~0.80 0.1-10Ω
KNPN-200 2W 4.5 11.5 26 0.75~0.80 0.1-10 Ω
KNPN-200B 2W 5.5 15.5 35 0.75~0.80 0.1-20Ω
KNPN-300 3W 5.5 15.5 35 0.75~0.80 0.1-20 Ω
KNPN-400 4W 6.5 17.5 35 0.75~0.80 0.1-30 Ω
KNPN-500 5W 6.5 17.5 35 0.75~0.80 0.1-30 Ω
KNPN-500B 5W 8.5 24.5 38 0.75~0.80 0.1-50 Ω
KNPN-600 6W 8.5 24.5 38 0.75~0.80 0.1-50 Ω

Electrical Characteristics - Non-Inductive Wirewound KNPN

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 - Non-Inductive Wirewound KNPN

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

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KNPN Series - Non-Inductive Wirewound Resistors