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/°C, ±25ppm/°C
deRatiNG CURVe
iNtRodUCtioN
The MFP Series Metal Film Precision Resistors
are manufactured using vacuum sputtering sys-
tem 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 70°C, power rating must be derated
in accordance with the curve below.
Rated Load (%)
70
100
80
60
40
20
20
40
60
80
100 120 140 160
155 °C
Ambient Temperature (°C)
diMeNsioNs
stYLe
Normal
MFP-12
ød
H
L
øD
MFP204
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
Unit: mm
ød
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
Note:
eLeCtRiCaL CHaRaCteRistiCs
stYLe
Power Rating at 70°C
Maximum Working Voltage
MFP-12 MFP25s MFP204 MFP-25 MFP50s MFP207 MFP-50 MFP1Ws MFP100 MFP2Ws MFP200 MFP3Ws
1/6W
150V
1/4W
200V
400V
0.4W
1/4W
250V
500V
500V
600V
1/2W
0.6W
1/2W
350V
700V
1W
400V
800V
700V
500V
1,000V
1,000V
2W
3W
Maximum Overload Voltage 300V
Dielectric Withstanding Vol. 300V
Resistance Range
Operating Temp. Range
Temperature Coefficient
10
Ω
- 1 M
Ω
for E192 series value
-55°C to +155°C
±15ppm/°C, ±25ppm/°C
Note: Special value is available on request
eNViRoNMeNtaL CHaRaCteRistiCs
PeRFoRMaNCe test
Short Time Overload
Dielectric Withstanding Voltage
Temperature Coefficient
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
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
2.5 times RCWV for 5 Sec.
in V-Block for 60 Sec.
-55°C to +155°C
in V-Block
260±5°C for 5±0.5 Sec.
IPA for 1 Min. with ultrasonic
Direct load for 10 Sec. in the direction of the terminal leads
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
40±2°C, 90-95% RH at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)
70°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)
-55°C
Room Temp.
+155°C
Room Temp. (5 cycles)
350±10°C for 3±0.5 Sec.
Power Rating x Resistance Value
aPPRaise
±0.1%+0.05
Ω
By type
By type
>10,000M
Ω
95% Min. coverage
No deterioration of
coatings and markings
≥2.5kg
(24.5N)
±1.0%+0.05
Ω
±1.0%+0.05
Ω
±1.0%+0.05
Ω
±0.25%+0.05
Ω
±0.25%+0.05
Ω
Note: Rated Continuous Working Voltage (RCWV) =
