Re: Transistor solder dwell time


Glenn Little
 

Eliminate the question and get proper desoldering equipment.
PACE makes very good desoldering equipment and it is available on EBay reasonable.
Hakko also makes good equipment.
These will not damage the boards nor the parts.
It will take some practice on junk boards, but it is well worth it if you repair electronics.

Glenn

On 9/17/2019 1:22 PM, DW wrote:
I have reinstalled Q384 and Q386 transistors onto the main board of the 577 but upon soldering them back in they became fairly hot to the touch which had me concerned as I know heat is the enemy of electronics. When I removed them a fair amount of heat was involved due to the length of the leads being used on the pads, the soldering tool helped here and it appears these transistors survived the somewhat difficult removal after checking with a multimeter.

So my concern here is dwell time installing and removing transistors, especially the difficult ones which might require multiple attempts to desolder the leads and pull it out, I wonder if they make a 3 iron soldering gun in this case so all 3 leads can get heated and it can quickly be removed?

Thanks


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Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@arrl.net AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"

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