Leaded ResistoRs
Flame-Proof Type
Wirewound Resistors
Normal & Miniature Style [ KNP Series ]
FeatURes
Power Rating
1/4W, 1/2W, 1W, 2W, 3W, 4W, 5W, 7W
ResistanceTolerance
±1%, ±5%
±300ppm/°C
UL-94V-0
T.C.R.
Flameproof Multi-layer Coating Meets
Flameproof Feature Meets OverloadTest
UL-1412
iNtRodUCtioN
deRatiNG CURVe
The resistor element is a resistive wire which is
wound in a single layer on a ceramic rod, with
tinned connecting wires of electrolytic copper
welded to the end-caps. The ends of the
resistive wire and the leads are connected to
the caps by welding. The resistors are coated
with layers of green color flame-proof lacquer.
For resistors operated in ambient temperatures above 40°C, power rating must be derated
in accordance with the curve below.
40 70
200
275 °C
Rated Load (%)
100
80
60
40
20
3W-7W
1/4W-3WS
Ambient Temperature (°C)
50 100 150 200 250 300
diMeNsioNs
Unit: mm
stYLe
Nꢀrmꢁl
KNP-25
KNP-50
KNP100
KNP200
KNP300
KNP400
KNP500
KNP700
diMeNsioN
Mꢂnꢂꢁꢃurꢄ
NP50S
L
ød
2.4±0.2
H
øꢅ
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
28±2.0
26±2.0
35±2.0
33±2.0
0.55±0.05
0.55±0.05
0.8±0.05
0.8±0.05
KNP1WS
KNP2WS
KNP3WS
3.3±0.3
4.5±0.5
5.0±0.5
ød
H
L
øD
KNP5WS
17.5±1.0
6.5±0.5
32±2.0
0.8±0.05
KNP7WS
-
24.5±1.0
24.5±1.0
8.0±0.5
8.0±0.5
38±2.0
38±2.0
0.8±0.05
0.8±0.05
Note: KNP1WS ( for MBType ) ød = 0.8±0.05 mm