YAGEO CORPORATION
LEADED RESISTORS
Metal Oxide Film Resistors
FLAME-PROOF TYPE
Normal & Miniature Style [ RSF Series ]
FEATURES
Low Cost, Prompt Delivery
High Power-to-Size Ratio for Significant Space Savings
Flameproof Silicone Coating (UL94V-0)
High Surge/Overload Capability
Non-Inductive Design
Wide Resistance Range: 1 ~1M
Resistance ToLerance: 5%
INTRODUCTION
These Metal Oxide 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 & the miniature style of RSF
series are coated with layers of gray and pink
colors flame-proof lacquer respectively.
DERATING CURVE
Rated Load (%)
100
80
60
40
20
50
100
150
200
250
70ºC
Ambient Temperature (ºC)
HOT
-SPOT TEMPERATURE
Surface Temp. Rise (ºC)
200
150
100
50
Measuring Position
RSF500
RSF300
RSF2WS
RSF200
RSF100
RSF50S
RSF-50
RSF5WS
RSF3WM, RSF5SS
RSF3WS
RSF1WS
0
25
50
75
100
Applied Load, % of RCWV
Unit : mm
DIMENSIONS
STYLE
Normal
RSF-25
RSF-50
RSF100
RSF200
ød
H
L
øD
RSF5SS
RSF300
RSF500
Miniature
RSF50S
RSF1WS
RSF2WS
RSF3WS
RSF3WM
RSF5WS
–
DIMENSION
L
6.3 0.5
9.0 0.5
11.5 1.0
15.5 1.0
17.5 1.0
24.5 1.0
24.5 1.0
øD
2.4
3.3
4.5
5.0
H
28
26
35
33
ød
0.6
0.6
0.8
0.8
0.2
0.3
0.5
0.5
2.0
2.0
2.0
2.0
0.05
0.05
0.05
0.05
6.5 1.0
8.5 1.0
8.5 1.0
32 2.0
38 2.0
38 2.0
0.8 0.05
0.8 0.05
0.8 0.05
* RSFIWS (MB Type) ød0.8 0.05
Note :
ELECTRICAL CHARACTERISTICS
STYLE
RSF-25
RSF50S
RSF-50
RSF1WS RSF100
RSF2WS RSF200
RSF3WS/ RSF300
RSF3WM
3W
RSF5SS/ RSF500
RSF5WS
5W
Power Rating at 70ºC
Operating Temp. Range
Maximum Working Voltage
Maximum Overload Voltage
1/4W
1/2W
1W
2W
-55ºC to +155ºC
200V
300V
250V
400V
350V
250V
400V
350V
300V
500V
400V
350V
600V
500V
350V
600V
500V
350V
600V
500V
350V/450V 500V
600V/700V 800V
500V/600V 700V
500V/500V 750V
800V/800V 1000V
700V/750V 750V
Dielectric Withstanding Voltage 250V
Value Range 5%
Temperature Coefficient
1 ~1M
300ppm/ºC
* Standard resistance is 1 ~1M , below or over this resistance on request.
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
Short Time Overload
Dielectric Withstanding Voltage
Temperature Coefficient of Resistance
Insulation Resistance
Solderability
Resistance to Solvent
Terminal Strength
Pulse Overload
Load Life in Humidity
Load Life
Temperature Cycling
Resistance to Soldering Heat
TEST METHOD
JIS-C-5202 5.5
JIS-C-5202 5.7
JIS-C-5202 5.2
JIS-C-5202 5.6
JIS-C-5202 6.5
JIS-C-5202 6.9
2.5 Times RCW V for 5 Seconds
in V-Block for 60 Seconds
-55ºC to +155ºC
in V-Block
235ºC for 5 0.5 Seconds
IPA for 1 Min. with Ultrasonic
APPRAISE
(1%+0.05 )
by Type
300ppm/ºC
>1000M
95% Min. Coverage
No Deterioration of
Coatings and Markings
2.5kg (24.5N)
(2%+0.05 )
(5%+0.05 )
(5%+0.05 )
(1%+0.05 )
(1%+0.05 )
Direct Load for 10 Sec. in The Direction of The Terminal Leads
JIS-C-5202 5.8
JIS-C-5202 7.9
JIS-C-5202 7.10
JIS-C-5202 7.4
JIS-C-5202 6.4
4 Times RCW V 10000 Cycles (1 Sec. on , 25 Sec. off)
40 2ºC, 90~95% RH at RCW V for 1000 Hrs.
(1.5 Hrs. on , 0.5 Hrs. off )
70ºC at RCWV for 1000 Hrs. (1.5 Hrs. on , 0.5 Hrs. off)
-55ºC
➞
Room Temp.
➞
+155ºC➞ Room Temp. for 5 Cycles
350ºC 10ºC for 3 0.5 Seconds
* Rated Continuous Working Voltage (RCW V)= Power Rating x Resistance Value
