Extracting eeprom

**sekb** · 16th February, 2020, 10:42 PM

Hello. Maybe someone could help me with what tools should I get from extracting eemprom from car radios? Saw many cheap tools on ebay and aliexpress but I have no idea what to buy. Thank You.

**figani** · 17th February, 2020, 10:07 AM

Originally Posted by sekb

Hello. Maybe someone could help me with what tools should I get from extracting eemprom from car radios? Saw many cheap tools on ebay and aliexpress but I have no idea what to buy. Thank You.

extracting...?
you mean read/write...?
if yes, TL866, xprog, orange5, but much more others...
if by clip or by desoldering...

**sekb** · 17th February, 2020, 12:53 PM

Originally Posted by figani

extracting...?
you mean read/write...?
if yes, TL866, xprog, orange5, but much more others...
if by clip or by desoldering...

I would like to desolder chip and then extract information from it, but not sure about the tools to extract it.

**12manux** · 26th February, 2020, 01:53 PM

Put a little flux on the surface of pads of eeprom.Then use the hotairgun 5-6 cm of the eeprom (temp 300-350 degrees) and then with a tweezer grab the eprom gently ,not to hard because you can easily rip the pcb traces.Afterwards with some solderwek remove the old solder of the pcb,put some flux and solder back your eeprom .It comes very handy and easy after a few tries.Good luck

**narkeleptk** · 26th February, 2020, 05:40 PM

Originally Posted by sekb

I would like to desolder chip and then extract information from it, but not sure about the tools to extract it.

Its pretty simple. You remove the chip, place it on adapter or socket and use a proper eeprom programmer to read it. I prefer tl866 or orange 5 for eeproms personally but there are many eeprom programmers available for whats usually found inside radio's.

**CasaEd** · 27th February, 2020, 09:53 PM

280 deg is hot enough to remove the chip with a hot air gun, 350 deg will fry the chip, happened to me only once because I failed to look up the temperature that the chip can with stand

**narkeleptk** · 27th February, 2020, 11:29 PM

Originally Posted by CasaEd

280 deg is hot enough to remove the chip with a hot air gun, 350 deg will fry the chip, happened to me only once because I failed to look up the temperature that the chip can with stand

280c? that is pretty low for most stuff unless its lead solder. I keep my hot air around 375c and adjust distance depending on what I need to remove. Never cooked anything.

**12manux** · 17th March, 2020, 09:37 PM

i work everyday with eeproms and mcus ,my soldering station is set to 350 degrees.Depends on my hand skills i guess

**orx** · 26th March, 2020, 09:29 PM

wet the feet with iron solder using low melting tin (e.g. quick alloy) and then you can remove the component even at 250 degrees with your hot air station .

**fuzz1** · 9th April, 2020, 09:15 AM

Originally Posted by orx

wet the feet with iron solder using low melting tin (e.g. quick alloy) and then you can remove the component even at 250 degrees with your hot air station .

Seems you have some experience. Any tip for soldering it back on?

**orx** · 27th May, 2020, 04:19 PM

SOrry for late answer ... anyway the type of welding technique varies from the type of component, DIP (common eeprom) QFP and BGA. For the eeprom i use wet the prints with a bit of common tin paste or wire 60/40, no low fusion tin because it tends to crystallize and to crack on solder joint. Then with the soldering iron with a 0.2 mm tip (I recommend the copper tips) I help myself with the tweezers and I begin to go over the feet again. You can also use the hot air by shielding the nearby components with Kapton tape, air speed. medium and rotation of the handpiece so as not to concentrate the air on a single point. For QFP components the same story applies while for BGA it requires experience and a lot of pages...

dip.PNG qfp.jpg bga.jpg