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
