Wirewound Resistors

(KNP-VE)

Introduction (KNP-VE)

High Energy Wirewound Resistor (KNP-VE)

Vitreous Enamel Coated Power High Energy Wirewound Resistors.

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 choice. Contact us with your specific needs.

Features :

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

Applications :

Power tools
Consumer applications
Power supplies, Welders
High voltage applications
High-switching applications
Home entertainment, appliances

Technical Specifications (KNP-VE)

Power Wirewound Resistors (KNP-VE) Derating Curve

Power (KNP-VE) Derating Curve

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)

ΦD

Φd

KNP-VE-2.5

2.5

1 ~ 1K

100

±5%
±10%

±250
±400

12.7

5.6

0.8

KNP-VE-3

1 ~ 1K

120

14.0

7.0

KNP-VE-5

1 ~ 3.6K

160

23.0

7.0

KNP-VE-6

1 ~ 6.8K

200

22.2

8.0

KNP-VE-8

1 ~ 20K

400

33.9

8.0

KNP-VE-9

1 ~ 27K

500

38.1

8.0

1.0

KNP-VE-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)

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

Order Codes (KNP-VE)

KNP-VE

100R

Part Number