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MMF-12 Datasheet Preview

MMF-12 Datasheet

Melf Metal Film Resistors

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Through-hole resistors
Melf Metal Film Resistors
General Type
Normal & Miniature Style [ MMF Series ]
FEATURES
Power Rating
Resistance Tolerance
T.C.R.
1/6W, 1/4W, 0.4W, 1/2W, 0.6W, 1W
±0.1%, ±0.25%, ±0.5%, ±1%, ±2%, ±5%
±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C
INTRODUCTION
The MMF Series Melf Metal Film Resistors are
manufactured using a vacuum sputtering system
to deposit multiple layers of mixed metal
alloys and passivative materials onto a carefully
treated high grade ceramic substrate. SMD
enabled structure. The resistors are coated
with layers of blue color lacquer.
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
Rated Load (%)
70 155 °C
100
80
60
40
20
20 40 60 80 100 120 140 160
Ambient Temperature (°C)
DIMENSIONS
C
L
D
STYLE
Normal
MMF-12
MMF-25
MMF-50
Miniature
MMF25S / MMF204
MMF50S / MMF207
MMF1WS
DIMENSION
L
3.50±0.2
5.90±0.2
8.50±0.2
D
1.40±0.15
2.20±0.1
3.20±0.2
Unit: mm
C Min.
0.5
0.5
0.5




YAGEO

MMF-12 Datasheet Preview

MMF-12 Datasheet

Melf Metal Film Resistors

No Preview Available !

Note:
23
ELECTRICAL CHARACTERISTICS
STYLE
MMF-12
MMF25S MMF204 MMF-25
MMF50S MMF207
Power Rating at 70°C
1/6W
1/4W
0.4W
1/4W
1/2W
0.6W
Maximum Working Voltage
150V
200V
250V
Maximum Overload Voltage
300V
400V
500V
Voltage Proof on Insulation
300V
500V
Resistance Range
1Ω - 1MΩ & 0Ω for E24 & E96 series value, 100Ω - 100KΩ for E192 series value
Operating Temp. Range
-55°C to +155°C
Temperature Coefficient
±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C
Note: Special value is available on request
MMF-50
1/2W
350V
700V
700V
MMF1WS
1W
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
Short Time Overload
IEC 60115-1 4.13 2.5 times RCWV for 5 Sec.
Voltage Proof on Insulation
Temperature Coefficient
IEC 60115-1 4.7
IEC 60115-1 4.8
in V-block for 60 Sec., test voltage by type
-55°C to +155°C
Insulation Resistance
Solderability
IEC 60115-1 4.6
IEC 60115-1 4.17
in V-block for 60 Sec.
235±5°C for 3±0.5 Sec.
Solvent Resistance of Marking
IEC 60115-1 4.30 IPA for 5±0.5 Min. with ultrasonic
Periodic-pulse Overload
Damp Heat Steady State
Endurance at 70°C
Temperature Cycling
Resistance to Soldering Heat
IEC 60115-1 4.39
IEC 60115-1 4.24
IEC 60115-1 4.25
IEC 60115-1 4.19
IEC 60115-1 4.18
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
70±2°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)
260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body
Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
APPRAISE
±0.5%+0.05Ω
By type
By type
>10,000MΩ
95% Min. coverage
No deterioration of
coatings and markings
±1.0%+0.05Ω
±2.0%+0.1Ω
±2.0%+0.1Ω
±0.75%+0.05Ω
±0.5%+0.05Ω
Revision: 201304


Part Number MMF-12
Description Melf Metal Film Resistors
Maker YAGEO
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