what kind of hot glue can I use on a PCB?

[Marius]

Hi,

 

yesterday I upgraded my iBook G4 with a SSD. Everything went fine, except for the fact that my trackpad connector 'broke' from my Logic board.

 

I was able to fix it, and I soldered it back to. But since the connector now only is fixed by 4 very tiny SMD solder contacts, I would like to add some extra stability.

 

The only thing I could think of was putting some hot glue against the connector and the PCB.

 

But I don't have experience with that. I am afraid the glue is too hot and will melt solder contacts.

 

I saw on internet a glue-pistol with glue-temperature like 195 degrees CELCIUS. That appears to be rather hot, but again: I do not have any experience.

 

So I hope someone can give me a hint.

 

I know it is not atari related, but I think a lot of experienced electronics people are here, so I asked my question here!

 

Greetz

Marius

[Rybags]

Shouldn't be a worry - hot silicone glue melts at a fraction of the temp that solder does.

 

Unsure the exact figure, but probably not much more than that of boiling water.

 

If you wanted to apply at a lower temp, then you could apply it indirectly although it firms up pretty quickly. Or maybe turn the gun off for 10-20 seconds then apply otherwise as normal.

 

Or if you wanted to go the old fashioned way, maybe 2-part araldyte would work, although removing that stuff would probably risk damage.

 

 

http://en.wikipedia....t-melt_adhesive

 

Looks like there's all manner of types, many being poly/plastic based.

 

So, melting point could be anywhere around 120 - 190 Deg C.

ed2 -At the higher end, you 'd be close to the melting point of leaded solder, so maybe testing against something disposable is advisable.

Edited December 9, 2011 by Rybags

[candle]

i would rather go with epoxy glue than hot glue

[+Larry]

If one uses hot melt, it can easily be removed with IPA.

 

Just curious -- is there a similar method for epoxy?

 

-Larry

 

 

i would rather go with epoxy glue than hot glue

[flashjazzcat]

Indian Pale Ale removes hot glue? Great - gonna try this.

[candle]

for epoxy - heat it up and pry it loose

its getting soft and flexible when heated up (200-250 celcius degrees) and it won't affect plastic parts of connectors at this temperature

besides - there is a capton tape to shield these parts