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Desoldering eeprom - Hot air temperature

MrWho

Dec 16, 2011
9
Joined
Dec 16, 2011
Messages
9
Hello,

What hot air temperature I should use to desolder SMD eeprom memory soic 8 ..And not damage it ?

Thank You
 
Last edited:

OLIVE2222

Oct 2, 2011
690
Joined
Oct 2, 2011
Messages
690
Hi MrWho,

The t° can be found in the solder manufacturer datasheet however for such kind of component hot air is probably not the best solution (it takes too long time for the heat to melt the solder). better to (without dedicated reworking station) :
* made a big fresh solder blob on one row that shortcut the 4 pin's
* heat the blob and carefully raise the package with an adapted tool till the pin's are isolated from the pads. You must ensure a good melting to avoid any pad's damage when pulling !!
*made a big fresh solder blob on the other row and kick the board a bit to let the eeprom fail.
*clean the pin's and re-align them

If the eeprom content is very important you can maybe try to read it before desoldering for backup purpose. You must be fast to desolder, so maybe you can train yourself with
any dead board.

Olivier
 

MrWho

Dec 16, 2011
9
Joined
Dec 16, 2011
Messages
9
Hi MrWho,

The t° can be found in the solder manufacturer datasheet however for such kind of component hot air is probably not the best solution (it takes too long time for the heat to melt the solder). better to (without dedicated reworking station) :
* made a big fresh solder blob on one row that shortcut the 4 pin's
* heat the blob and carefully raise the package with an adapted tool till the pin's are isolated from the pads. You must ensure a good melting to avoid any pad's damage when pulling !!
*made a big fresh solder blob on the other row and kick the board a bit to let the eeprom fail.
*clean the pin's and re-align them

If the eeprom content is very important you can maybe try to read it before desoldering for backup purpose. You must be fast to desolder, so maybe you can train yourself with
any dead board.

Olivier

Hello,

Sorry I wasn't clear by hot air I mean hot air rework station.
Not hot air gun...

Thank You
Cheers,
Kris
 

OLIVE2222

Oct 2, 2011
690
Joined
Oct 2, 2011
Messages
690
MrWho,

OK with a hot air rework station chose the adapter they well surround the component and use a solder flux to speed up the process. being fast and backup the content are still applicable :)

Olivier
 
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