9
KNP series
WIRE WOUND RESISTORS, FLAMEPROOF
ELECTRICAL AND MECHANICAL PERFORMANCE
ENVIRONMENTAL CHARACTERISTICS
1. Super heat dissipation small linear temperature
coefficient.
2. Instant overload capability low noise figure and
low annual shift on resistance values.
3. Flameproof, light weight, price is lower than enamel
types.
4. Winding wires are much more durable than enamel
types which are produced in high temperature.
Features
1.
2.
3.
4.
Characteristics
Characteristics
Resistance Tolerance
Resistance Temp. Coeff.
Power Rating Load
Short Time Overload
Dielectric Withstanding Voltage
Insulation Resistance
Terminal Strength
Solder-ability
Resistance to Soldering Heat
Temp. Cycle
Load Life
Moisture-proof Load Life
Nonflammability
Standards
Standards
5% ( J ) or 1% ( F )
R/R 1%
300 ppm /
R/R 3%
R/R 3%
2%
Minimum 95% coverage
95%
No evidence of mechanical damage.
, R/R 1%
No evidence of mechanical damage.
No evidence of mechanical damage
or insulation breakdown.
Applying suitable voltage listed on
Dimensions for one minute.
10 times of rated wattage
for 5 seconds.
Test Methods
Test Methods
-
-55 ( 30 min.) Room Temp.( 3 min.)
+200 ( 30 min.)
Room Temp.( 3 min.) / ( 5 cycles)
-55 ~ 200
Rated power load 90 minutes ON
30 minutes OFF
70 1000 hours
Rated power load 90 minutes ON
30 minutes OFF
40 95% RH 1000 hours
16 times of rated wattage for 5 min.
235 5 for 2 seconds
DC100V or 500V megger
270 5 for 10 1 seconds
350 10 for 3.5 0.5 seconds
< 1W 1 kg
> 2W 2.5 kg
1
10 / 5
1,000MÙ
not flamed
Reference Standards
JIS C 5201-1
Surface temp. 275 Max.
275 , R/R 2%
Rated voltage for 30 minutes
/ 30
10
KNP series
-55
70
0 50 -50
20 40 60 80 100
1/4W~1W
2W
4W~10W
3W(3WL)
100 150 200 250 275
0
0
20
0
40
60
100
80
100
200
300
H DL H
Derating Curve
How to order
For resistors operated in ambient temperatures above 70 ,
power rating must be derated in accordance with the curve
below.
a. b. c. d. e.
Unit mm
Rated
Wattage
1/4W
1/2W
1W
2W
3W
3WL
5W
6W
7W
8W
10W
3.0
4
5.0
5.5
5.5
6.5
8.5
8.5
8.5
8.5
2.6 0.5
6.8
9
9
11
13
15
19
24
32
41
53
28
28
28
28
38
38
38
38
33
38
38
0.6
0.65
0.65
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.1~200
0.1~300
0.1~500
0.1~1K
0.1~1K
0.1~1.2K
0.1~1.2K
0.1~1.5K
0.1~1.5K
0.1~2.2K
0.1~3.3K
250V
350V
350V
500V
500V
500V
500V
500V
500V
800V
1000V
D1 L1 H3 d0.1
Resistance
Range(Ù)
Dielectric
Withstanding
Voltage
It is composed by Type, Rated Wattage, Nominal Resistance, Tolerance and Package. e.g.
a. Type( ): Wire Wound Resistors, Flameproof are called "KNP".
b. Rated Wattage( ) : Shown by "W" such as 1/4W, 1/2W, 1W, 2W, 3W,
3WL, 5W, 6W, 7W, 8W, 10W
c. Nominal Resistance( ) : 10Ù.
d. Tolerance( ): F 1% , J 5% .
e. Package ( ):
T/R tape & reel ( ); T/B tape in box( ); Nil Bulk( ).
d
Dimensions
Ambient Temp.
O
(C)
Rated Load
(%)
Surface Temperature Rise
Too low or too high ohmic values can be supplied only case by case.Note:
Rated Load
(%)
Surface Temperature Rise
O
(C)
KNP 1W 10R J T/B