Fusible & Flame-Proof Type

Through-hole resistors
Fusible &
Flame-Proof Type
Wirewound Resistors
Normal & Miniature Style [ FKN Series ]
FEATURES
Power Rating
1/2W, 1W, 2W, 3W, 4W, 5W, 7W
Resistance Tolerance
±1%, ±5%
T.C.R.
±350ppm/°C
Flameproof Multi-layer Coating Meets
UL-94V-0
Flameproof Feature Meets Overload Test
UL-1412
DERATING CURVE
INTRODUCTION
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 are connected to the caps by
welding. The resistors are coated with layers
of green color flame-proof lacquer. Overload
protection without risk of fire. Wide range of
overload currents.
For resistors operated in ambient temperatures above 40°C, power rating must be derated
in accordance with the curve below.
Rated Load (%)
40 70
155
275 °C
100
3W-7WS
1/2WS-3WS
80
60
40
20
50
Ambient Temperature (°C)
100 150 200 250 300
FUSING CHARACTERISTICS
R≤2.0Ω Fusing time within 60 seconds at 36 times of rated power
R>2.0Ω Fusing time within 60 seconds at 25 times of rated power
Fusing residual resistive value at least 100 times rated resistance
DIMENSIONS
Unit: mm
ød
H
L
øD
5th color code: white
STYLE
DIMENSION
Normal
Miniature
L
øD
H
ød
-
FKN50S
6.3±0.5
2.5±0.3
28±2.0
0.55±0.05
FKN-50
FKN1WS
9.0±0.5
3.5±0.3
26±2.0
0.55±0.05
FKN100
FKN2WS
11.5±1.0
4.6±0.5
35±2.0
0.8±0.05
FKN200
FKN3WS
15.5±1.0
5.2±0.5
33±2.0
0.8±0.05
FKN5WS
17.5±1.0
6.5±0.5
32±2.0
0.8±0.05
FKN7WS
24.5±1.0
8.5±0.5
38±2.0
0.8±0.05
FKN300
FKN400
FKN500
Note: FKN1WS ( for MB Type ) ød = 0.8±0.05 mm
53
ELECTRICAL CHARACTERISTICS
Normal STYLE
STYLE
FKN-50
FKN100
FKN200
Power Rating at 40°C
Power Rating at 70°C
1/2W
Maximum working voltage
PxR
Voltage Proof on Insulation
300V
Resistance Range (±1%)
Resistance Range (±5%)
0.5Ω - 47Ω
Operating Temp. Range
-40°C to +155°C
Temperature Coefficient
±350ppm/°C
FKN300
FKN400
FKN500
3W
4W
5W
1W
2W
0.5Ω - 100Ω
0.47Ω - 150Ω
0.56Ω - 330Ω
1Ω - 620Ω
0.5Ω - 100Ω
0.47Ω - 150Ω
0.56Ω - 330Ω
1Ω - 620Ω
FKN1WS
FKN2WS
Note: Special value is available on request
MINIATURE STYLE
STYLE
FKN50S
FKN3WS
Power Rating at 40°C
Power Rating at 70°C
1/2W
Maximum working voltage
PxR
Voltage Proof on Insulation
200V
Resistance Range (±1%)
Resistance Range (±5%)
2.5Ω - 22Ω
Operating Temp. Range
-40°C to +155°C
Temperature Coefficient
±350ppm/°C
1W
FKN5WS
FKN7WS
5W
7W
2W
3W
0.47Ω - 62Ω
0.47Ω - 150Ω
0.47Ω - 240Ω
0.56Ω - 330Ω
1Ω - 620Ω
0.47Ω - 62Ω
0.47Ω - 150Ω
0.47Ω - 240Ω
0.56Ω - 330Ω
1Ω - 620Ω
300V
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
IEC 60115-1 4.13
10 times rated power for 5 Sec.
±2.0%+0.05Ω
Voltage Proof on Insulation
IEC 60115-1 4.7
in V-block for 60 Sec., test voltage by type
By type
Temperature Coefficient
IEC 60115-1 4.8
-55°C to +155°C
By type
Insulation Resistance
IEC 60115-1 4.6
in V-block for 60 Sec.
>100MΩ
Solderability
IEC 60115-1 4.17
235±5°C for 3±0.5 Sec.
95% Min. coverage
Solvent Resistance of Marking
IEC 60115-1 4.30
IPA for 5±0.5 Min. with ultrasonic
No deterioration of
coatings and markings
Robustness of Terminations
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of the terminal leads
≥2.5kg (24.5N)
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
±5.0%+0.05Ω
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)
±5.0%+0.05Ω
Temperature Cycling
IEC 60115-1 4.19
-55°C  Room Temp.  +155°C  Room Temp. (5 cycles)
±1.0%+0.05Ω
Resistance to Soldering Heat
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body
±1.0%+0.05Ω
Accidental Overload Test
IEC 60115-1 4.26
4 times RCWV for 1 Min.
No evidence of flaming
or arcing
Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
Revision: 201304
88
Explanations Of Ordering Code
MFR
-12
F
Code 7
Tolerance
T
F
Code 8
Packing Style
Code 9
Temperature Coefficient of Resistance
Code 1 - 3
Series Name
Code 4 - 6
Power Rating
See Index
-05= ød0.5mm
P= ±0.02 %
T = Tape/Box
-06 = ød0.6mm
A= ±0.05 %
R = Tape/Reel
- = Base on Spec.
-07 = ød0.7mm
B= ±0.1 %
B = Bulk
52-
100R
Code 10 - 12
Forming Type
Code 13 - 17
Resistance Value
26- = 26mm
0R1=0.1
52- = 52.4mm
100R=100
A = ±5 ppm/°C
73- = 73mm
10K=10,000
81- = 81mm
10M=10,000,000
-08 = ød0.8mm
C= ±0.25%
B = ±10 ppm/°C
-10 = ød1.0mm
D= ±0.5 %
C = ±15 ppm/°C
91- = 91mm
-14 = ød1.4mm
F = ±1 %
S = ± 20ppm/°C
F = F Type
-12 = 1/6W
G= ±2 %
D = ±25 ppm/°C
FK = FK Type
-25 = 1/4W
J = ±5 %
E = ±50 ppm/°C
FKK= FKK Type
25S = 1/4WS
K= ±10 %
F = ±100 ppm/°C
FFK= F-form Kink
-50 = 1/2W
- = Base on Spec.
G = ±200 ppm/°C
M = M-Type Forming
50S = 1/2WS
H = ±250 ppm/°C
MB = M-form W/flat
100 = 1W
I = ±300 ppm/°C
MT = MT Type Forming
1WS = 1WS
J = ±350 ppm/°C
MR = MR Type
200 = 2W
AV = AVIsert
2WS = 2WS
PN = PANAsert
204 = 0.4W
207 = 0.6W
300 = 3W
3WS = 3WS
3WM= 3WM
400 = 4W
500 = 5W
5WS = 5WS
5SS = 5WSS
700 = 7W
7WS = 7WS
10A = 10W
20A = 20W
30A = 30W
40A = 40W
50A = 50W
10S = 10WS
15A = 15W
25A= 25W
10B = 100W
25B = 250W
EXCEPTION:
• Cement series:
• JPW series:
<Code 8>: Special packing style code
B: B
ulk with wirewound or metal oxide sub-assembly for resistance value
W: Bulk with ceramic based wirewound sub-assembly for resistance value
M: Bulk with metal oxide sub-assembly for resistance value
F: Bulk with Fiberglass based wirewound sub-assembly for resistance value
<Code 10-12>: Without forming code
Example:
SQP500JB-10R
<Code 13-17>: without resistance value code
Example:
JPW-06-T-52-