leaded resIsTOrs
Metal Film Resistors
Precision Type
Normal & Miniature Style [ MFP Series ]
FeaTUres
Power Rating
Resistance Tolerance
T.C.R.
1/6W, 1/4W, 0.4W, 1/2W, 0.6W, 1W, 2W, 3W
±0.1%, ±0.25%
±15ppm/ºC, ±25ppm/ºC
deraTING CUrVe
INTrOdUCTION
The MFP Series Metal Film Precision Resistors are
manufactured using vacuum sputtering system to
deposit multiple layers of mixed metals alloy and
passivative materials onto a carefully treated high
grade ceramic substrate. After a helical groove has
been cut in the resistive layer, tinned connecting
leads of electrolytic copper are welded to the end-
caps. The resistors are coated with layers of blue
color lacquer. Ultra high precision resistors, ultra
high stability, ultra low temperature coefficient.
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
sTYle
Normal
MFP-12
MFP204
ød
H
L
øD
MFP-25
MFP207
MFP-50
MFP100
MFP200
Miniature
MFP25S
-
MFP50S
-
MFP1WS
MFP2WS
MFP3WS
dIMeNsION
l
3.4±0.3
3.4±0.3
6.3±0.5
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
ød
1.9±0.2
1.9±0.2
2.4±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
28±2.0
28±2.0
26±2.0
35±2.0
33±2.0
ød
Unit : mm
0.45±0.05
0.45±0.05
0.55±0.05
0.55±0.05
0.55±0.05
0.8±0.05
0.8±0.05
7
Note :
eleCTrICal CHaraCTerIsTICs
sTYle
MFP-12
MFP25s
MFP204
MFP-25
MFP50s
MFP207
MFP-50
MFP1Ws MFP100
MFP2Ws MFP200 MFP3Ws
Power Rating at 70 ºC
Maximum Working Voltage
1/6W
150V
1/4W
200V
400V
0.4W
1/4W
250V
500V
500V
1/2W
0.6W
1/2W
350V
1W
400V
800V
700V
500V
1000V
1000V
2W
3W
Maximum Overload Voltage 300V
Dielectric Withstanding Vol.
Resistance Range
Operating Temp. Range
Temperature Coefficient
300V
600V
700V
1Ω ~ 10MΩ & 0Ω for E192 series value
- 55ºC to + 155ºC
±15ppm/ºC , ±25ppm/ºC
* Below or over this resistance range on request.
eNVIrONMeNTal CHaraCTerIsTICs
PerFOrMaNCe TesT
Short Time Overload
Dielectric Withstanding Voltage
Temperature Coefficient
Insulation Resistance
Solderability
Resistance to Solvent
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 RCWV for 5 Seconds
in V-Block for 60 Seconds
-55ºC to +155ºC
in V-Block
260ºC ±5ºC for 5 ±0.5 Seconds
IPA for 1 Min. with Ultrasonic
aPPraIse
±(0.1%+0.05Ω)
by Type
by Type
>10000MΩ
95% Min. Coverage
No deterioration of
Coatings and Markings
Terminal Strength
Pulse Overload
Load Life in Humidity
Load Life
Temperature Cycling
Resistance to Soldering Heat
JIS-C-5202 6.1
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
Direct load for 10 Sec. In the Direction of the Terminal Leads
4 Times RCWV 10000 Cycles (1 Sec. On, 25 Sec. off)
40±2ºC , 90~95% RH at RCWV for 1,000 Hrs. (1.5 Hrs. on , 0.5 Hrs. off)
70ºC at RCWV for 1,000 Hrs. (1.5 Hrs. on 0.5 Hrs. off)
-55ºCgRoom Temp.g+155ºCgRoom Temp. for 5 Cycles
350ºC ±10ºC for 3±0.5 Seconds
Power Rating x Resistance Value
≧2.5kg
(24.5N)
±1.0%+0.05Ω
±1.0%+0.05Ω
±1.0%+0.05Ω
±0.25%+0.05Ω
±0.25%+0.05Ω
* Rated Continuous Working Voltage (RCW V)=
