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Old 06-27-2022, 01:15 AM   #1
eccerr0r
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Default Grr... stupid DPAKs.

Grr... stupid DPAKs.

Guess what I'm trying to do with them.

Tried a 100W gun... no dice in getting it to budge
45W pencil with a big flat tip... no dice

I'm not sure if I want to salvage this transistor or not at this point as I'm not sure if it's the culprit or not... hot air would do any better?
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Old 06-27-2022, 02:11 AM   #2
diif
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Default Re: #@&*%!dpak

Get yourself a better iron like the Axium T3A, if that won't remove it you're doing something wrong.
Are you adding leaded solder? Why not try it with the hot air?
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Old 06-27-2022, 04:26 AM   #3
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Default Re: Grr... stupid DPAKs.

hot air and 60/40 should shift it
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Old 06-27-2022, 07:01 AM   #4
stj
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Default Re: Grr... stupid DPAKs.

before i had hot air,

desolder and slightly lift each leg
put a bit of solder on the end of the iron and hold it on the tab.
eventually the component will slide down and you can extract it
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Old 06-27-2022, 07:33 AM   #5
eccerr0r
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Default Re: Grr... stupid DPAKs.

holy crap. 200W pencil iron... LOL.
Yes, added leaded solder...hmm.
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Old 06-27-2022, 10:28 AM   #6
eccerr0r
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Default Re: Grr... stupid DPAKs.

Blah, and of course the source pin has a huge pad with PTVs and a through hole capacitor right next to it... Incidentally that capacitor is a solid polymer electrolytic.
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Old 06-27-2022, 01:10 PM   #7
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Default Re: Grr... stupid DPAKs.

preheating the board helps
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Old 06-27-2022, 04:11 PM   #8
eccerr0r
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Default Re: Grr... stupid DPAKs.

hmm... Tried to use my hot air gun on another (scrap) board with a dpak, came right off with no fuss.
I don't think I'll see the same on the motherboard I want to take the mosfet off of (without damaging either -- worried about frying the other components that are right next to it!).

BTW I wonder if I could sub a TO220 in for a dpak and not solder to the board... if the larger package is sufficient for not having board heat spreading...
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