Non-inductive Wirewound Resistors (KNPN)

绕线电阻 无感电阻 低感电阻

Non-inductive Wire Wound Resistor Improves Inductance for High Frequency Applications.

Direct Electronics has introduced a non-inductive version KNPN resistor of conformal coated, leaded wirewounds. The KNPN non-inductive wire wound resistor offers the expected performance with the added characteristic of vastly improved inductance, making it suitable for high-switching applications.

Wirewound technology has long been known as a leading technology for power resistor needs though it is inherently inductive. Known as Ayrton Perry winding, a non-inductively wound has one winding in one direction and one in the other direction.

By using a non-inductively wound version this greatly reduces the inductance of any given resistor size and value combination; however, it does not completely eliminate the inductance.

This non-inductive winding is available in all standard KNPN sizes from 0.5 watts up to 6 watts with options 1%, 2% and 5% tolerance. The KNPN series is RoHS compliant and also can be supplied with radial, goalpost or lancet preformed leads.

To address your need for technical and economic success in a timely manner, our custom solutions are available. Contact us with your specific needs.

Download complete PDF Non-inductive Wirewound Resistors (KNPN).

Features :
  1. Low cost
  2. Excellent pulse load capability
  3. Non-inductive Ayrton Perry winding
  4. A wide resistance range 0.1Ω to 50Ω
  5. A wide range of power ratings 0.5W to 6W
  6. Operating temperature range -55°C ~ 155°C
  7. Products with Pb-free Terminations and RoHS compliant
Applications :
  1. Power tools
  2. Current sensing
  3. Consumer applications
  4. Power supplies, Welders
  5. High voltage applications
  6. High-switching applications
  7. Home entertainment, appliances
General Specifications (KNPN)
Type Rated
Watts
Dimensions (Unit: 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 Performance (KNPN)
(KNPN) Power derating curve
(KNPN) Power derating curve
TEST ITEMS CONDITION SPEC
Operating Temperature Range
-55 °C ~ 275 °C (0W)
Resistance Temp. Coeff.
Room temperature/100 °C up ± 300 PPM / °C
Short Time Overload 10 times of rated wattage for 5 sec. ± 2 %
Rated Load Rated wattage 30 min. ± 1 %
Voltage Withstanding 500VAC 1 min ± 1 %
Temperature Cycling -20 °C ~ 85 °C 5 cycles ± 1 %
Order Codes (KNPN)
KNPN-100 1W 10R J P
Type
KNPN
Power Rating
(W)
Resistance Value
(Ω)
0R1 0.1Ω
1R
1R2 1.2Ω
10R 10Ω
12R 12RΩ
Resistance Tolerance
(%)
F ±1%
G ±2%
J ±5%
Package
P Bulk
TB Taping Box