YAGEO CORPORATION LEADED RESISTORS
Metal Film Resistors MFR Series
Normal & Miniature Style
FEATURES
Power Rating 1/6W, 1/4W, 1/2W, 1W, 2W
Resistance T olerance ±0.1%, ±0.25%, ±0.5%, ±1%
T.C.R. ±15ppm/ºC, ±25ppm/ºC, ±50ppm/ºC, ±100ppm/ºC
DIMENSIONS
STYLE DIMENSION
Normal Miniature L øD H ød
MFR-12 MFR25S 3.3±0.4 1.8±0.3 28±2.0 0.5±0.05
MFR-25 MFR50S 6.3±0.5 2.3±0.3 28±2.0 0.6±0.05
MFR-50 MFR1WS 9.0±0.5 3.2±0.5 26±2.0 0.6±0.05
MFR100 MFR2WS 11.5±1.0 4.5±0.5 35±2.0 0.8±0.05
MFR200 – 15.5±1.0 5.0±0.5 33±2.0 0.8±0.05
Unit : mm
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.
ød
HLøD
DERATING CUR VE
Ambient Temperature (ºC)
Rated Load (%)
HO T-SPOT TEMPERATURE
Surface Temp. Rise (ºC)
Applied Load, % of RCWV
MFR2WS
MFR200 MFR1WS
MFR100 MFR50S
MFR-50 MFR25S
MFR-25
MFR-12
0255075100
200
150
100
50
Measuring Position
100
80
60
40
20
20 40 60 80 100 120 140 160 180
70ºC
Note :
ELECTRICAL CHARA CTERISTICS
STYLE MFR-12 MFR25S MFR-25 MFR50S MFR-50 MFR1WS MFR100 MFR2WS MFR200
Power Rating at 70ºC 1/6W 1/4W 1/2W 1W 2W
Operating Temp. Range -55ºC to +155ºC
Maximum Working Voltage 200V 200V 250V 300V 350V 400V 500V 500V 500V
Maximum Overload Voltage 400V 400V 500V 600V 700V 800V 1000V 1000V 1000V
Dielectric Withstanding V oltage 300V 400V 500V 500V 500V 700V 1000V 1000V 1000V
Value Range ±0.5%, ±1% 10Ω~1MΩ
Value Rang ±0.1%, ±0.25% 100Ω~100KΩ
Temperature Coefficient (by Type) ±15ppm/ºC, ±25ppm/ºC, ±50ppm/ºC, ±100ppm/ºC
* Resistance Range for standard resistance, below or over this resistance on request.
2
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST TEST METHOD APPRAISE
Short Time Overload JIS-C-5202 5.5 2.5 Times RCWV for 5 Seconds ±(0.25%+0.05Ω)
Dielectric Withstanding Voltage JIS-C-5202 5.7 in V-Block for 60 Seconds by Type
Temperature Coefficient of Resistance JIS-C-5202 5.2 -55ºC to +155ºC by Type
Insulation Resistance JIS-C-5202 5.6 in V-Block >10000MΩ
Solderability JIS-C-5202 6.5 235ºC for 5±0.5 Seconds 95% Min. Coverage
Resistance to Solvent JIS-C-5202 6.9 Trichroethane for 1 Min. with Ultrasonic No Deterioration of
Coatings and Markings
Terminal Strength Direct load for 10 Sec. in The Direction of The Terminal Leads ≥2.5kg (24.5N)
Pulse Overload JIS-C-5202 5.8 4 Times R CWV 10000 Cycles (1 Sec. on , 25 Sec. off) ±(2%+0.05Ω)
Load Life in Humidity JIS-C-5202 7.9 40±2ºC, 90~95% RH at R CWV for 1000 Hrs. ±(1.5%+0.05Ω)
(1.5 Hrs. on , 0.5 Hrs. off )
Load Life JIS-C-5202 7.10 70ºC at RCWV for 1000 Hrs. (1.5 Hr s. on , 0.5 Hrs. off) ±(1.5%+0.05Ω)
Temperature Cycling JIS-C-5202 7.4 -55ºC➞Room T emp.➞+155ºC➞Room Temp. for 5 Cycles ±(0.25%+0.05Ω)
Resistance to Soldering Heat JIS-C-5202 6.4 350ºC±10ºC for 3±0.5 Seconds ±(0.25%+0.05Ω)
* Rated Continuous Working Voltage (RCWV)= Power Rating x Resistance Value
