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,
tinned connecting wires of electrolytic copper
are welded to the end-caps. The ends of the
resistance 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
KNP50S
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