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What is the difference between package symbols H and HF?

Latest Updated:04/01/2007

Question:

What is the difference between package symbols H and HF?

Answer:

Take the series regulator, for example.
The following products have H or HF in their product name.

uPC79M12H (discontinued product) => Package name: TO-220
uPC79M12HF => Package name: MP-45G


TO-220 is a name given by JEDEC and MP-45G is originally named by former NEC Electronics.

"F" indicates a full mold coating and indicates that the part of TO-220 that is made of metal is coated by insulation mold for the MP-45G.

3-PIN PLASTIC SIP(TO-220)


3-PIN PLASTIC SIP(MP-45G)

 

Merit of full mold (MP-45) over metal exposure (TO-220)
The merit of the full-mold product is that the insulation mold coating substitutes for the insulation plate. In addition, no insulation bushing is necessary, therefore the number of mounting processes can be decreased.


Standard Mounting Method on Heat Sink

Suitable Products
Power Management Linear