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DATA SHEET
WIREWOUND RESISTORS
General Purpose
KNP Series
±1%, ±2%, ±5%
1/4W to 7W
RoHS compliant & Halogen Free
Product specification – August 13, 2021 V.0
Through Hole Resistors
Product Specification
2
22
WireWound Resistors
KNP
ORDERING INFORMATION
Part number of the wirewound resistor is identified by the series, power
rating, tolerance, packing, temperature coefficient, forming and
resistance value.
PART NUMBER
KNP
100
(2)
J
(3)
T
(4)
-
(5)
73-
(6)
100R
(7)
APPLICATIONS
Power applications
Home appliance
Industry
(1)
(1) SERIES
KNP Series
(2) POWER RATING
-25 = 1/4W
50S = 1/2W
200 = 2W
3WS = 3W
3SS = 3W
300 = 3W
400 = 4W
5WS = 5W
500 = 5W
600 = 6W
700 = 7W
7WS = 7W
FEATURES
Higher power rating
Wide resistance range
High stable performance and
high reliability
Flameproof coating equivalent
to UL-94V-0
RoHS compliant &
halogen-free
-50 = 1/2W
1WS = 1W
100 = 1W
2WS = 2W
(3) TOLERANCE
F = ±1%
G = ±2%
J = ±5%
(4) PACKAGING
T = Box Pack
R = Reel Pack
B = Bulk
(5) TEMPERATURE COEFFICIENT OF RESISTANCE
- = Based on spec.
(6) FORMING
52- = 52.4mm
73- = 73mm
91- = 91mm
M = M-Type Forming
MB = M-form W/flat
F = F Type
FK = FK Type
FFK = F-form Kink
FKK = FKK Type
FT = FT Type Forming
PN = PANAsert
AV = AVIsert
(7) RESISTANCE VALUE
E24 & E96 Series
Example:
0R1= 0.1Ω, 100R= 100Ω, 1K = 1,000Ω
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Aug. 13, 2021
V.0
Through Hole Resistors
Product Specification
3
22
WireWound Resistors
KNP
DIMENSIONS
Unit: mm
Normal
KNP-25
KNP-50
KNP100
KNP3SS
KNP200
KNP300
KNP5WS
KNP400
KNP500
KNP7WS
KNP600
KNP700
-
24.5 ± 1.0 8.2 ± 0.5
24.5 ± 1.0 8.2 ± 0.5
38 ± 2.0
38 ± 2.0
0.8 ± 0.05
0.8 ± 0.05
17.5 ± 1.0 6.2 ± 0.5
24.5 ± 1.0 8.2 ± 0.5
32 ± 2.0
38 ± 2.0
0.8 ± 0.05
0.8 ± 0.05
KNP3WS
11.5 ± 1.0 4.6 ± 0.5
15.5 ± 1.0 5.2 ± 0.5
17.5 ± 1.0 6.2 ± 0.5
35 ± 2.0
33 ± 2.0
32 ± 2.0
0.8 ± 0.05
0.8 ± 0.05
0.8 ± 0.05
Miniature
KNP50S
KNP1WS
KNP2WS
L
6.3 ± 0.5
9.0 ± 0.5
ψD
2.5 ± 0.3
3.5 ± 0.3
H
28 ± 2.0
26 ± 2.0
35 ± 2.0
ψd
0.55 ± 0.05
0.55 ± 0.05
0.8 ± 0.05
11.5 ± 1.0 4.6 ± 0.5
DERATING CURVE
KNP-25 ~ KNP3WS
Rated Power (%)
100
80
60
40
36
20
70
200
275
Ambient Temperature (
°
C)
KNP300 ~ KNP700
Rated Power (%)
100
80
60
40
31
20
40
200
275
Ambient Temperature (°C)
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Aug. 13, 2021
V.0
Through Hole Resistors
Product Specification
4
22
WireWound Resistors
KNP
ELECTRICAL CHARACTERISTICS
CHARACTERISTICS
Power Rating
at 40 °C
Power Rating
at 70 °C
Resistance Range
(±1%)
Resistance Range
(±2% & ±5%)
Voltage Proof on
Insulation
Maximum working
voltage
Operating Temp.
Range
Temperature
Coefficient
1/4W
0.1Ω -
150Ω
0.1Ω -
200Ω
250V
√(P X R)
- 40°C to +200°C
±300ppm/°C
1/2W
0.1Ω -
750Ω
0.1Ω -
800Ω
300V
1W
0.1Ω -
1.5KΩ
0.1Ω -
2.2KΩ
400V
2W
0.1Ω -
2.4KΩ
0.1Ω -
2.7KΩ
400V
0.1Ω -
3.3KΩ
0.1Ω -
3.9KΩ
400V
0.1Ω -
3.3KΩ
0.1Ω -
3.9KΩ
400V
0.1Ω -
6.2KΩ
0.1Ω -
6.8KΩ
400V
0.1Ω -
6.2KΩ
0.1Ω -
6.8KΩ
400V
0.1Ω -
6.2KΩ
0.1Ω -
6.8KΩ
400V
KNP-25
KNP-50
KNP100 KNP200 KNP300 KNP400 KNP500 KNP600 KNP700
3W
4W
5W
6W
7W
Note: For resistance value out of above range is by request.
CHARACTERISTICS
Power Rating
at 40 °C
Power Rating
at 70 °C
Resistance Range
(±1%)
Resistance Range
(±2% & ±5%)
Voltage Proof on
Insulation
Maximum working
voltage
Operating Temp.
Range
Temperature
Coefficient
KNP50S
KNP1WS
KNP2WS
KNP3SS
KNP3WS
KNP5WS
5W
KNP7WS
7W
1/2W
0.1Ω -
150Ω
0.1Ω -
200Ω
200V
√(P X R)
1W
0.1Ω -
750Ω
0.1Ω -
800Ω
300V
2W
0.1Ω -
1.5KΩ
0.1Ω -
2.2KΩ
400V
3W
0.1Ω -
1.5KΩ
0.1Ω -
2.2KΩ
400V
3W
0.1Ω -
2.4KΩ
0.1Ω -
2.7KΩ
400V
0.1Ω -
3.3KΩ
0.1Ω -
3.9KΩ
400V
0.1Ω -
3.3KΩ
0.1Ω -
3.9KΩ
400V
- 40°C to +200°C
±300ppm/°C
Note: For resistance value out of above range is by request.
www.yageo.com
Aug. 13, 2021
V.0
Through Hole Resistors
Product Specification
5
22
WireWound Resistors
KNP
TEST AND REQUIRMENTS
TEST
Short Time Overload
Voltage Proof on
Insulation
Temperature Coefficient
Insulation Resistance
Solderability
Solvent Resistance of
Marking
Robustness of
Terminations
Damp Heat Steady State
IEC 60115-1 4.24
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of
the terminal leads
40±2°C,90-95% RH for 56 days, loaded
with 0.1 times RCWV
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV(or Umax., whichever
less) for 1,000 Hr.(1.5 Hr.on,0.5 Hr. off)
Temperature Cycling
IEC 60115-1 4.19
-55°C
Room Temp.
±1.0%+0.05Ω
±5.0%+0.05Ω
±5.0%+0.05Ω
IEC 60115-1 4.8
IEC 60115-1 4.6
IEC 60115-1 4.17
IEC 60115-1 4.30
TEST METHOD
IEC 60115-1 4.13
IEC 60115-1 4.7
PROCEDURE
10 times rated power for 5 sec.
In V-Block for 60 sec. test voltage as
above table
Between -40°C to +155°C
In V-Block for 60 sec.
245±5°C for 3±0.5 Sec.
IPA for 5±0.5 Min. with ultrasonic
By Type
>100MΩ
95% Min. coverage
No deterioration of
coatings and markings
≥2.5Kg(24.5N)
APPRAISE
±2%+0.05Ω
No Breakdown
+155°C Room Temp.(5 cycles)
Resistance to Soldering
Heat
Accidental Overload
Test
IEC 60115-1 4.26
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a
point 3±0.5mm from the body
4 times RCWV for 1 Min.
No evidence of flaming
or arcing
±1.0 %+0.05Ω
Note:
RCWV (Rated Continuous Working Voltage ):
The DC or AC (rms) continuous working voltage corresponding to the rated power is determined by the following
formula:
V=√(P X R)
or max. working voltage whichever is less
Where
V=Continuous rated DC or
AC (rms) working voltage (V)
P=Rated power (W)
R=Resistance value (Ω)
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Aug. 13, 2021
V.0