2
4
6
8
10
12
14
16
18
20
22
24
26
28
29
30
32
34
36
38
40
42
44
50
50
51
YAGEO CORPORATION
LEADED RESISTORS
ISO-9002 CERTIFIED
INDEX
Metal Film Res. [ MFR Series ]
Metal Film Res.-Precision Type [ MFP Series ]
Metal Film Res.-Professional Type [ MF0 Series ]
Metal Film Res.-Flame-Proof Type [ FMF Series ]
Metal Film Res.-Professional & Flame-Proof Type [ FM0 Series ]
Metal Film Res.-Power Flame-Proof Type [ FMP Series ]
Metal Oxide Film Res.-Flame-Proof Type [ RSF Series ]
Carbon Film Res. [ CFR Series ]
Carbon Film Res.-Professional Type [ CF0 Series ]
Carbon Film Res.-Flame-Proof Type [ FCR Series ]
Carbon Film Res.-Professional & Flame-Proof Type [ FC0 Series ]
Carbon Film Res.-Non Inductive Type-Normal Style [ NCR Series ]
Carbon Film Res.-Non-Inductive Type-Miniature Style [ NCR Series ]
Zerohm Res. [ ZOR Series ]
Jumper Wires [JPW Series ]
Wirewound Res. [ KNP Series ]
Wirewound Res.-Non Inductive Type [ NKN Series ]
Metal film Res.-Fusible Type-Normal Style [ FRM Series ]
Metal film Res.-Fusible Type-Miniature Style [ FRM Series ]
Cement Res.-Axial Lead Type [ SQP/NSP Series ]
Cement Res.-Vertical Lead Type [ SQM/NSM Series ]
Cement Res.-Radial Terminals Type [ SQZ/NSZ Series ]
Cement Res.-Clamp Mounting Type [ SQH/NSH Series ]
Packing Methods
Special Type [ Forming Type ]
Explanations of Ordering Code
YAGEO CORPORATION
LEADED RESISTORS
Metal Film Resistors
MFR Series
Normal & Miniature Style
FEATURES
Power Rating
Resistance Tolerance
T.C.R.
1/6W, 1/4W, 1/2W, 1W, 2W
0.1%, 0.25%, 0.5%, 1%
15ppm/ºC, 25ppm/ºC, 50ppm/ºC, 100ppm/ºC
DERATING CURVE
Rated Load (%)
100
80
70ºC
INTRODUCTION
The MFR Series Metal Film Resistors are
manufactured using vacuum sputtering system
to deposit multiple layers of mixed metals and
passivative materials onto a carefully treated
high grade ceramic substrate, the resistors are
coated with layers of blue lacquer.
60
40
20
20
40
60
80
100
120 140
160
180
Ambient Temperature (ºC)
HOT
-SPOT TEMPERATURE
Surface Temp. Rise (ºC)
Measuring Position
200
150
100
50
MFR2WS
MFR200
MFR100
MFR-50
MFR-25
MFR-12
0
25
50
75
100
MFR1WS
MFR50S
MFR25S
Applied Load, % of RCWV
DIMENSIONS
Unit : mm
STYLE
Normal
MFR-12
ød
H
L
øD
MFR-25
MFR-50
MFR100
MFR200
Miniature
MFR25S
MFR50S
MFR1WS
MFR2WS
–
DIMENSION
L
3.4 0.3
6.3 0.5
9.0 0.5
11.5 1.0
15.5 1.0
øD
1.9 0.2
2.4 0.2
3.3 0.3
4.5 0.5
5.0 0.5
H
28 2.0
28 2.0
26 2.0
35 2.0
33 2.0
ød
0.5 0.05
0.6 0.05
0.6 0.05
0.8 0.05
0.8 0.05
Note :
ELECTRICAL CHARACTERISTICS
STYLE
Power Rating at 70ºC
Operating Temp. Range
Maximum Working Voltage
Maximum Overload Voltage
Dielectric Withstanding Voltage
Value Range 0.5%, 1%
Value Rang 0.1%, 0.25%
Temperature Coefficient (by Type)
MFR-12
1/6W
MFR25S
1/4W
MFR-25
MFR50S
1/2W
MFR-50
MFR1WS MFR100
1W
MFR2WS MFR200
2W
-55ºC to +155ºC
200V
400V
300V
10 ~1M
100 ~100K
15ppm/ºC, 25ppm/ºC, 50ppm/ºC, 100ppm/ºC
200V
400V
400V
250V
500V
500V
300V
600V
500V
350V
700V
500V
400V
800V
700V
500V
1000V
1000V
500V
1000V
1000V
500V
1000V
1000V
* Resistance range for standard resistance, 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
(0.25%+0.05 )
by Type
by Type
>10000M
95% Min. Coverage
No Deterioration of
Coatings and Markings
2.5kg (24.5N)
(1%+0.05 )
(1.5%+0.05 )
(1.5%+0.05 )
(0.75%+0.05 )
(0.25%+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 RCW V 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
YAGEO CORPORATION
LEADED RESISTORS
Metal Film Resistors
Precision Type
MFP Series
FEATURES
Power Rating :1/6W, 1/4W, 0.4W, 1/2W, 0.6W
Resistance Tolerance : 0.1%, 0.25%
T.C.R. : 15ppm/ºC, 25ppm/ºC
High thermal conductivity and specific gravity rods
Epoxy coating
Blue body color
POWER DERATING CURVE
For resistors operated in ambient temperatures above 70ºC , power
rating must be derated in accordance with the curve below.
70ºC
Rated Load (%)
100
80
60
40
20
20
40
60
80
100
120 140
160
180
Ambient Temperature (ºC)
DIMENSIONS
Unit : mm
STYLE
Normal
MFP-12
ød
H
L
øD
MFP204
MFP-25
MFP207
Miniature
MFP25S
__
MFP50S
__
DIMENSION
L
3.4 0.3
3.4 0.3
6.3 0.5
6.3 0.5
øD
1.9 0.2
1.9 0.2
2.4 0.2
2.4 0.2
H
28 2.0
28 2.0
28 2.0
28 2.0
ød
0.5 0.05
0.5 0.05
0.6 0.05
0.6 0.05
Note :
ELECTRICAL CHARACTERISTICS
PERFORMANCE STYLE
Power Rating at 70ºC
Maximum Working Voltage
Maximum Overload Voltage
Dielectric Withstanding Voltage
Temperature Coefficient
Short Time Overload
Insulation Resistance
Pulse Overload
Operating Temp. Range
Value Rang 0.1%
Value Range 0.25%
* Resistance range for standard resistance, below or over this resistance on request.
JIS-C-5202 5.7 in V-Block for 60 Seconds
JIS-C-5202 5.2 Room Temp. Add 100ºC
JIS-C-5202 5.5 2.5 Times RCWV for 5 Sec.
JIS-C-5202 5.6 in V-Block
4 Times RCWV 10,000 Cycles
JIS-C-5202 5.8 (1 Sec. on , 25 Sec. off )
TEST METHOD
MFP-12
1/6W
150V
300V
300V
MFP25S
1/4W
200V
400V
300V
MFP204
0.4W
200V
400V
300V
MFP-25
1/4W
250V
500V
500V
MFP50S
1/2W
250V
600V
500V
MFP207
0.6W
250V
600V
500V
15ppm/ºC, 25ppm/ºC
0.1%+0.05
>10,000M
1.0%+0.05
-55ºC to + 155ºC
100 ~100K
50 ~200K
100 ~200K
50 ~301K
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
Terminal Strength
Resistance to Soldering Heat
Solderability
Resistance to Solvent
Temperature Cycling
Humidity
Load Life in Humidity
Load Life
TEST METHOD
JIS-C-5202 6.1
JIS-C-5202 6.4
JIS-C-5202 6.5
JIS-C-5202 6.9
JIS-C-5202 7.4
JIS-C-5202 7.5
JIS-C-5202 7.9
Direct load for 10 Sec. in the Direction of the Terminal Leads
350ºC
235ºC
10ºC for 3
5ºC for 5
0.5 Seconds
0.5 Seconds
APPRAISE
2.5kg (24.5N)
0.20%+0.05
95% Min. Coverage
No Deterioration of
Coatings and Markings
0.25%+0.05
0.50%+0.05
1.0%+0.05
1.0%+0.05
IPA for 1 Min. with Ultrasonic
-55ºC➞ Room Temp.
➞
+155ºC
➞
Room Temp. for 5 Cycles
40 2ºC, 90~95% RH for 1,000 Hrs.
40 2ºC, 90~95% RH at RCW V for 1,000 Hrs.
(1.5 Hrs. on , 0.5 Hrs. off )
JIS-C-5202 7.10 70ºC at RCW V for 1,000 Hrs. (1.5 Hrs. on, 0.5 Hrs. off )
* Rated Continuous Working Voltage (RCW V)= Power Rating x Resistance Value
Switching Power Supply Study Group
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