Author Topic: Broke pins off TO-220, solder new wires on ?  (Read 1249 times)

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Offline lordvader88Topic starter

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Broke pins off TO-220, solder new wires on ?
« on: April 24, 2017, 09:02:52 pm »
I found a PCB on the street today, its been ran over and is rusting. It has 2 nice 16-pin PWM MOSFET drive chips on it, hopefully they still work, It might be from an induction heater style stove top ??? Or some type of inverter ?

Anyways I have a few TO-220 chips that I've pulled from stuff like today, and the pins sheared right off flush to the plastic. Can I solder on new wires on ? I have flux, files, sharpening stones, so I should be able to get a clean copper surface.
 

Offline wraper

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Re: Broke pins off TO-220, solder new wires on ?
« Reply #1 on: April 24, 2017, 09:04:45 pm »
you can but that will be very unreliable.
 

Offline lordvader88Topic starter

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Re: Broke pins off TO-220, solder new wires on ?
« Reply #2 on: April 24, 2017, 10:28:45 pm »
I'm wondering since there's so little to try and solder to that I would cook the chips. Thats fine but is there any tips ? Otherwise they are garbage anyways
 

Offline RoGeorge

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Re: Broke pins off TO-220, solder new wires on ?
« Reply #3 on: April 24, 2017, 10:40:56 pm »
Sure you can. You can even decap a small region near the broken pin using a Dremel against the plastic case, in order to expose more metal for soldering.
The link is to see what is under the plastic case: https://siliconpr0n.org/wiki/doku.php?id=decap:explosive
« Last Edit: April 24, 2017, 10:46:22 pm by RoGeorge »
 


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