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06-27-2022, 01:15 AM
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#1 |
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Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,914
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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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06-27-2022, 02:11 AM
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#2 |
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Badcaps Veteran
Join Date: Feb 2014
City & State: Midlands
My Country: England
I'm a: Professional Tech
Posts: 6,652
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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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06-27-2022, 04:26 AM
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#3 |
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Badcaps Veteran
Join Date: Jan 2015
City & State: worcester
My Country: United Kingdom
I'm a: Knowledge Seeker
Posts: 3,590
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Re: Grr... stupid DPAKs.
hot air and 60/40 should shift it
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06-27-2022, 07:01 AM
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#4 |
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Great Sage 齊天大聖
Join Date: Dec 2009
City & State: Europe
My Country: some shithole run by Israeli agents
I'm a: Professional Tech
Posts: 28,335
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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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06-27-2022, 07:33 AM
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#5 |
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Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,914
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Re: Grr... stupid DPAKs.
holy crap. 200W pencil iron... LOL.
Yes, added leaded solder...hmm. |
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06-27-2022, 10:28 AM
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#6 |
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Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,914
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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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06-27-2022, 01:10 PM
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#7 |
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Badcaps Veteran
Join Date: Jan 2015
City & State: worcester
My Country: United Kingdom
I'm a: Knowledge Seeker
Posts: 3,590
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Re: Grr... stupid DPAKs.
preheating the board helps
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06-27-2022, 04:11 PM
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#8 |
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Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,914
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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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11-09-2022, 11:13 AM
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#9 |
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Senior Member
Join Date: Jun 2022
City & State: 45.2,14.4
My Country: Planet Earth
Posts: 153
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Re: Grr... stupid DPAKs.
You can desolder dpak with soldering iron, just slightly lift up legs and put some baking paper behind.
https://m.youtube.com/watch?v=Khs6txY6iW4 |
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