Through-hole resisTors
DIMENSIONS Unit: mm
STYLE DIMENSION
Normal Miniature LøD Hød
RSF-25 RSF50S / RSF1WV 6.3±0.5 2.4±0.2 28±2.0 0.55±0.05
RSF-50 RSF1WS 9.0±0.5 3.3±0.3 26±2.0 0.55±0.05
RSF100 RSF2WS / RSF2WV 11.5±1.0 4.5±0.5 35±2.0 0.8±0.05
RSF200 RSF3WS 15.5±1.0 5.0±0.5 33±2.0 0.8±0.05
- RSF3WV 16.5+0/-1.5 6.0+0/-0.5 33±2.0 0.8±0.05
RSF3WM RSF5SS 17.5±1.0 6.5±1.0 32±2.0 0.8±0.05
- RSF4WV 20+0/-1 9.0+0/-0.5 31±2.0 0.8±0.05
RSF300 RSF5WS 24.5±1.0 8.5±1.0 38±2.0 0.8±0.05
RSF500 - 24.5±1.0 8.5±1.0 38±2.0 0.8±0.05
Note: RSF1WS (for MB Type) ød = 0.8±0.05mm
RSF3WV, RSF4WV: Marking Printed
FEATURES
Power Rating 1/4W, 1/2W, 1W, 2W, 3W, 5W
Resistance Tolerance ±2%, ±5%
T.C.R. ±300ppm/°C
Flameproof Multi-layer Coating Meets UL-94V-0
Flameproof Feature Meets Overload Test UL-1412
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
Metal Oxide Film Resistors
Flame-Proof Type
Normal & Miniature Style [ RSF Series ]
INTRODUCTION
The RSF Series Metal Oxide Film Flame-Proof
Resistors offer excellent performance in
applications where stability and uniformity of
characteristics are desired. They provide lower
cost alternatives to Carbon Composition
Resistors and General Purpose Metal Films.
Metal Oxides also can replace many low power
General Purpose wirewound applications, saving
both money and time, with shorter delivery
cycles. The normal style & ‘RSF-WV’ style of
RSF series are coated with layers of gray flame-
proof lacquer, and the miniature style except
‘RSF-WV’ style are coated with layers of pink
colors flame-proof lacquer.
ød
H L øD
Rated Load (%)
Ambient Temperature (°C)
25020015010050
100
80
60
40
20
70 155 235°C
Revision: 201304
21
Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
MINIATURE STYLE
STYLE RSF50S RSF1WV RSF1WS RSF2WS RSF2WV RSF3WS RSF3WV RSF5SS RSF4WV RSF5WS
Power Rating at 70°C 1/2W 1W 2W 3W 5W 4W 5W
Maximum Working Voltage 250V 500V 300V 350V 500V 350V 750V 500V 750V 700V
Maximum Overload Voltage 400V 500V 600V 750V 800V 900V
Voltage Proof on Insulation 350V 500V 400V 500V
Resistance Range 1Ω - 1MΩ & 0Ω for E24 series value
Operating Temp. Range -55°C to +235°C
Temperature Coefcient ±300ppm/°C
Note: Special value is available on request
ELECTRICAL CHARACTERISTICS
NORMAL STYLE
STYLE RSF-25 RSF-50 RSF100 RSF200 RSF3WM RSF300 RSF500
Power Rating at 70°C 1/4W 1/2W 1W 2W 3W 5W
Maximum Working Voltage 200V 250V 350V 450V 500V 750V
Maximum Overload Voltage 300V 400V 600V 700V 800V 1,000V
Voltage Proof on Insulation 250V 350V 500V
Resistance Range 1Ω - 1MΩ & 0Ω for E24 series value
Operating Temp. Range -55°C to +235°C
Temperature Coefcient ±300ppm/°C
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST TEST METHOD APPRAISE
Short Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. ±1.0%+0.05Ω for normal style
±2.0%+0.05Ω for miniature style
Voltage Proof on Insulation IEC 60115-1 4.7 in V-block for 60 Sec., test voltage by type By type
Temperature Coefcient 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. >1,000MΩ
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)
Periodic-pulse Overload IEC 60115-1 4.39 4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off) ±2.0%+0.05Ω
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 aming or arcing
88
EXPLANATIONS OF ORDERING CODE
EXCEPTION:
• Cement series: • JPW series:
<Code 8>: Special packing style code
B: Bulk 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-
-12
Code 4 - 6
Power Rating
-05 = ød0.5mm
-06 = ød0.6mm
-07 = ød0.7mm
-08 = ød0.8mm
-10 = ød1.0mm
-14 = ød1.4mm
-12 = 1/6W
-25 = 1/4W
25S = 1/4WS
-50 = 1/2W
50S = 1/2WS
100 = 1W
1WS = 1WS
200 = 2W
2WS = 2WS
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
F
Code 7
Tolerance
P = ±0.02 %
A = ±0.05 %
B = ±0.1 %
C = ±0.25%
D = ±0.5 %
F = ±1 %
G = ±2 %
J = ±5 %
K = ±10 %
- = Base on Spec.
T
Code 8
Packing Style
T = Tape/Box
R = Tape/Reel
B = Bulk
F
Code 9
Temperature Coef-
cient of Resistance
- = Base on Spec.
A = ±5 ppm/°C
B = ±10 ppm/°C
C = ±15 ppm/°C
S = ± 20ppm/°C
D = ±25 ppm/°C
E = ±50 ppm/°C
F = ±100 ppm/°C
G = ±200 ppm/°C
H = ±250 ppm/°C
I = ±300 ppm/°C
J = ±350 ppm/°C
52-
Code 10 - 12
Forming Type
26- = 26mm
52- = 52.4mm
73- = 73mm
81- = 81mm
91- = 91mm
F = F Type
FK = FK Type
FKK = FKK Type
FFK = F-form Kink
M = M-Type Forming
MB = M-form W/at
MT = MT Type Forming
MR = MR Type
AV = AVIsert
PN = PANAsert
100R
Code 13 - 17
Resistance Value
0R1 = 0.1
100R = 100
10K = 10,000
10M = 10,000,000
MFR
Code 1 - 3
Series Name
See Index
