Author Topic: SOT23 desoldering tip  (Read 5545 times)

0 Members and 1 Guest are viewing this topic.

Offline SteveyG

  • Supporter
  • ****
  • Posts: 987
  • Country: gb
  • Soldering Equipment Guru
Re: SOT23 desoldering tip
« Reply #25 on: November 29, 2021, 07:27:21 am »
Just get a cheap chinese T12 knife or chisel tip (in the 3$ range) and slot it to your need with a dremel or whatever tool you have at hand.
I mean, SOT23 isn't exactly the hardest package to desolder, there's no need to overthink this.

As soon as you slot it, you'd be removing the plating on the area that you need to be wetted. It's doubtful it would work.
YouTube Channel: https://www.youtube.com/user/sdgelectronics/
Use code: “SDG5” to get 5% off JBC Equipment at Kaisertech
 
The following users thanked this post: Ian.M

Offline ygi

  • Regular Contributor
  • *
  • Posts: 202
  • Country: be
Re: SOT23 desoldering tip
« Reply #26 on: November 29, 2021, 01:49:52 pm »
Just get a cheap chinese T12 knife or chisel tip (in the 3$ range) and slot it to your need with a dremel or whatever tool you have at hand.
I mean, SOT23 isn't exactly the hardest package to desolder, there's no need to overthink this.

As soon as you slot it, you'd be removing the plating on the area that you need to be wetted. It's doubtful it would work.

Raw copper will wet as long as it's clean. Put flux on it before the initial tinning and after that, keep a blob in the slot. Obviously, it's not a tool up to professional standards but it would work to unsolder a few dozens sot23 once every blue moon.
 

Offline thm_w

  • Super Contributor
  • ***
  • Posts: 6272
  • Country: ca
  • Non-expert
Re: SOT23 desoldering tip
« Reply #27 on: November 29, 2021, 11:56:12 pm »
Metcal version is basically the same (SMTC-105), 1.7mm gap (attached).
Its great for desoldering the SOT23, but its close to useless for holding and installing them. So as Ian.m said, if you're doing a huge batch, I'd maybe consider using this tool to remove them all, then switch to something else to go and install the replacements.

Hot tweezers are better for removing, holding, and installing the new part, as long as the width is wide enough to cover two legs. You can also use tweezers for 0603, 0805, etc. without needing to switch tips.
Profile -> Modify profile -> Look and Layout ->  Don't show users' signatures
 
The following users thanked this post: Geoff

Online DavidAlfa

  • Super Contributor
  • ***
  • Posts: 5835
  • Country: es
Re: SOT23 desoldering tip
« Reply #28 on: November 30, 2021, 03:58:08 pm »
If you cut it the copper will be gone in no time, there's a layer of iron on top of it for something.

I don't know if it's been said already, you have the T15-R23 (T15 is how T12 is named for US market)
« Last Edit: November 30, 2021, 04:00:36 pm by DavidAlfa »
Hantek DSO2x1x            Drive        FAQ          DON'T BUY HANTEK! (Aka HALF-MADE)
Stm32 Soldering FW      Forum      Github      Donate
 

Offline tooki

  • Super Contributor
  • ***
  • Posts: 11332
  • Country: ch
Re: SOT23 desoldering tip
« Reply #29 on: December 01, 2021, 01:05:16 pm »
Does anyone know of a video of these de-soldering tips that shows there use?

I would very much like to see a video of an SOT23 being de-soldered using one of those tips from JBC or Hakko.
6:15 in this ancient video shows it done using a Pace: https://youtu.be/M0wI-5YZQm4

I agree with the other comments here: if the part is trash, just drown it in molten solder and pull it off. If not, use hot air.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf