RoHS Vitreous Enamelled Wirewound Resistors (KNP-VE/LF)

Vitreous Enamel Coated Power High Energy Wirewound Resistors.

The KNP-VE/LF Series of vitreous enamel coated power resistors from Direct offers a cost-competitive alternative over the 1W-30W power range. The range is available with resistance values of 0.1Ω to 47KΩ in working voltage of 75V to 1000V, 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.

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

Power KNP-VE/LF Wirewound Series are ideal for computer, communications and industrial applications in which cost, quality, and reliability are key considerations. The KNP-VE/LF 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.

Download complete PDF Wirewound Resistors (KNP-VE/LF).

Features :
  1. Excellent pulse load capability
  2. Axial leads, All-welded construction
  3. A wide range of power ratings 1W to 30W
  4. A wide resistance range 0.1Ω to 47KΩ, Tolerance ±2%, ±5%
  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
RoHS Vitreous Enamelled Wirewound (KNP-VE/LF) Technical Specifications
RoHS Vitreous Enamelled Wirewound Derating Curve RoHS Vitreous Enamelled Wirewound Resistor Structure
Type 70°C Wattage
(W)
25°C Wattage
(W)
Resistance (Ω) Working Voltage (V) Temperature Coefficient
(PPM/°C)
Surface Temperature
(°C)
Dimensions (mm)
J (±5%) G (±2%) L Max. D ±1 d ±0.2
KNP-VE/LF 0.5 1 0.1 ~ 510 1 ~ 300 75 ≤ 250 ≤ 450°C 10 3.5±1 0.8
1 2 0.1 ~ 1K 1 ~ 680 100 12 4.5±1 0.8
2.6 3 0.1 ~ 5K1 1 ~ 1K5 120 12.7 5.6±1 0.8
4.5 5 0.1 ~ 10K 1 ~ 6K8 300 22 7±1 0.8
6 7 0.1 ~ 12K 1 ~ 8K2 350 24 7.4±1 0.8
7 8 0.5 ~ 20K 1 ~ 15K 500 33 8±1 0.8
9.5 11 0.5 ~ 27K 1 ~ 20K 650 38.1 8±1 1
15 18 0.5 ~ 36K 1 ~ 24K 700 45.8 9.5±1 1
20 23 1 ~ 51K 10 ~ 39K 800 54 9±1 1
25.8 30 0.5 ~ 47K 1 ~ 36K 1000 64 12±1 1
Vitreous Enamelled Wirewound (KNP-VE/LF) Performance
Test Item Characteristics Test Methods
SJ1330-78
Solderability Free flow of solder 235±5°C, 2s Groove welding
Terminal strength ΔR ≤ ± (1%R+0.05Ω) ≤4.3W 10N, ≥6W 20N
Overloading ΔR ≤ ± (1%R+0.05Ω) θ A=-55°C θ B=+200°C, 5 Cycles
Temperature Change ΔR ≤ ± (1%R+0.05Ω) 235±5°C, 2s Groove welding
Collision Test ΔR ≤ ± (1%R+0.05Ω) Acceleration 390m/s2, 4000 times
Impact Test ΔR ≤ ± (1%R+0.05Ω) Acceleration 490m/s2, 11ms, 18 times
Vibration Test ΔR ≤ ± (1%R+0.05Ω) Frequency 10-500Hz, Acceleration 98m/s2, 6h
Temperature Rise ≤245°C Apply rated power Load
Constant Damp Heat ΔR ≤ ± (5%R+0.05Ω) Temperature 40±2°C, Temperature 93+2/-3%, 56h
Room temperature Durability ΔR ≤ ± (5%R+0.05Ω) Rated power load at room temperature 1000h
RoHs Vitreous Enamelled Resistors - (KNP-VE/LF) Order Code
KNP-VE - 11W 10R J P
Type
KNP-VE Vitreous Enamelled
KNP-LF RoHs Vitreous Enamelled
Rated Power (W) @25°C
2W 2W
5W 5W
11W 11W
30W 30W
Resistance (Ω)
1R
110R 110Ω
1K1 1.1KΩ
10K 10KΩ
Resistance Tolerance
G ±2%
J ±5%
Package
TB Taping Box
P Bulk