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Feb. 08, 2023 V.0

Melf Metal Film Resistors

5

8

Product Specification

MMF

Through Hole Resistors

Resistance to Soldering

Heat

IEC 60115-1 4.18

260±3°C for 10±1 Sec., immersed to a

point 3±0.5mm from the body

±0.5%+0.005Ω

Endurance at upper

category temperature

IEC 60115-1 4.25

125±2°C for 1,000 Hr.

±1.0%+0.005Ω

Endurance at upper

category temperature

IEC 60115-1 4.25

155±2°C for 1,000 Hr.

±2.0%+0.005Ω

Climatic test

IEC 60115-1 4.23

Dry heat: 125°C for 16 Hr.

Damp heat: 55°C,95% RH for 24 Hr.

Cold: -55°C for 2 Hr.

Negative air pressure:8.5KPa at

25±10°C for 2 Hr.

Damp heat cyclic: 55°C, 95% RH for 5

days.

DC load: -55°C at RCWV for 1 Min.

125°C at RCWV for 1 Min.

±1.0%+0.005Ω

Note:

PACKING METHODS

RCWV (Rated Continuous Working Voltage):

The DC or AC (rms) continuous working voltage corresponding to the rated power is determined by the following

formula:

V=√(P X R)

or max. working voltage whichever is less

Where

V=Continuous rated DC or

AC (rms) working voltage (V)

P=Rated power (W)

R=Resistance value (Ω)

TYPE

Unit: piece

Normal

Miniature

Packaging

Quantity Per Reel

MMF-12

MMF25S

MMF204

7”

3,000

MMF-25

MMF50S

MMF207

7”

2,000

MMF-50

MMF1WS

13”

2,500