Wirewound Resistors

(KNP-VE)

Vitreous Enamel Coated Power High Energy Wirewound Resistors. Introduction

High Energy Wirewound Resistor (KNP-VE) Series
High Energy Wirewound Resistor (KNP-VE)
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The KNP-VE Series of vitreous enamel coated power resistors from Token offers a cost-competitive alternative over the 2.5W-12W power range. The range is available with resistance values of 1Ω to 39KΩ in power ratings of 2.5W, 3W, 5W, 6W, 8W, 9W and 12W (at 25°C), and with body sizes that match the industry standards.

Vitreous enamelled resistors were introduced at a time when alternative directly applied coatings could not withstand the thermal stresses caused by the resistors' high body temperatures.

Token offers the durability of a lead free conformal vitreous enamel coating, permits the KNP-VE Series resistors to maintain a hard coating while operating at high temperatures. Mechanical integrity is enhanced by the all-welded construction.

Power KNP-VE Wirewound Series are ideal for computer, communications and industrial applications in which cost, quality, and reliability are key considerations. The KNP-VE series is RoHS compliant and Ayrton Perry noninductive windings are available on request.

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

Features :

  1. Excellent pulse load capability
  2. Axial leads, All-welded construction
  3. A wide range of power ratings 2.5W to 12W
  4. A wide resistance range 1Ω to 39KΩ, Tolerance ±5%, ±10%
  5. Products with Pb-free Terminations and RoHS compliant
  6. Rugged vitreous enamel coating withstands high humidity and temperature cycling
  7. Durable construction, recommended for industrial applications where reliability is paramount

Applications :

  1. Power tools
  2. Consumer applications
  3. Power supplies, Welders
  4. High voltage applications
  5. High-switching applications
  6. Home entertainment, appliances

Technical Specifcations (KNP-VE)

Power Wirewound Resistors (KNP-VE) Derating Curve
Power (KNP-VE) Derating Curve
Power Resistors (KNP-VE) Dimensions
Wirewound Resistors (KNP-VE) Dimensions (Unit: mm)
Type Rated Watts
(W)		 Resistance
Range
(Ω)		 Limiting Voltage
(V)		 Tolerance Temperature Coefficient
(PPM/°C)		 Dimensions (mm) (Max)
L ΦD Φd
KNP-VE-2.5 2.5 1 ~ 1K 100 ±5%
±10%		 ±250
±400		 12.7 5.6 0.8
KNP-VE-3 3 1 ~ 1K 120 14.0 7.0
KNP-VE-5 5 1 ~ 3.6K 160 23.0 7.0
KNP-VE-6 6 1 ~ 6.8K 200 22.2 8.0
KNP-VE-8 8 1 ~ 20K 400 33.9 8.0
KNP-VE-9 9 1 ~ 27K 500 38.1 8.0 1.0
KNP-VE-12 12 1 ~ 39K 750 53.5 8.0

Performance (KNP-VE)

Test Items Condition Specifications
Insulation Resistance 500V 20MΩ
Short Time Overload 2.5 times of rated voltage 5 sec. ΔR≤±(2%R+0.05Ω)
Rated Load Rated wattage 30 min. ΔR≤±(1%R+0.05Ω)
Dielectric Withstanding Voltage 500V AC 1 min ΔR≤±(1%R+0.05Ω)
Temp. Cycle -20°C ~ 85°C 5 cycles ΔR≤±(1%R+0.05Ω)
Load Life 70°C on ~ off cycle 1000 hrs. ΔR≤±(5%R+0.05Ω)
Moisture-Proof Load Life 40°C 95% RH on~off cycle 500 hrs. ΔR≤±(3%R+0.05Ω)
Soldering After Resistance 350°C for 3 sec ΔR≤±(0.5%R+0.05Ω)
Incombustibility 16 times of rated wattage for 5 min. Not flamed

Application Notes of Wirewounds (KNP-VE)

  1. When being used in AC circuits, some wirewound structures give inductance ingredients or parasitic capacity, so they may cause unusual phenomena such as oscillations etc. Quorum deviations of other components should be carefully taken into account for use.

  2. Application and Placement: Wire wound resistors use different gauges of wire as resistance elements. Sometimes the gauge is extremely thin (finer than a strand of human hair) and very susceptible to breakage in environments containing salts, ash, dust and corrosives. Avoid utilization in such environments.

  3. Do not install in dusty areas because the accumulation will cause shorts and poor conductance.

Order Codes (KNP-VE)

KNP-VE - 3W 100R J P
1 2345
Part Number
KNP-VE
  
Rated Power (W)
Resistance Value (Ω)
1R 1Ω
100R 100Ω
1K 1000Ω
Resistance Tolerance (%)
J ±5%
K ±10%
Package
P Bulk
TB Taping Box

Specification Download (KNP-VE)

Download complete (KNP-VE) specification PDF (295KB) - High Energy Wirewound Resistors.
Token Manufacturing's family of High Energy Wirewounds employ special winding techniques to maximize the effective joule rating of each resistor. Token High Energy Wirewounds are hand wound in order to maintain the tightest possible pitch (space between windings) and thereby maximize the mass of the resistive element.