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How to solder this chip?

 
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goxy



Joined: 25 Jul 2002
Posts: 268
Helped: 1
Post18 Feb 2003 18:29   How to solder this chip?
How to solder this chip with small pins below ?
Does someone know some bottom to put chip into and then solder bottom pins to PCB?

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M!k



Joined: 22 Apr 2002
Posts: 789
Helped: 62
Post18 Feb 2003 20:18   
This is an 192-ball BGA-package. I would say it's impossible to solder by hand. But you should do a search in the forum for 'solder && BGA' and you'll find some approaches ...

Good luck,
Mik
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Red Arrow



Joined: 24 Jan 2002
Posts: 37
Post18 Feb 2003 21:31   
How about a low temp solder on pads, place chip in position secure it and heat all up.


red

Smile
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joebazoka



Joined: 17 May 2001
Posts: 105
Helped: 1
Location: Argentina
Post18 Feb 2003 22:46   
You need a heat air gun for solder this type of chip. Laughing
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prouddad_1



Joined: 05 Mar 2003
Posts: 6
Post05 Mar 2003 23:38   
I didn't download the file for the chip so I will take the word of the other fellow that identified it as a 192BGA.

I don't think this could be done without a hot air solderstation made for BGA chip placement. I have worked with many experienced assemblers that would shrug their shoulders without this equipment.

You could try a hot air gun, but I wouldn't expect good results even from an assembler with 10 years+ experience.

Smaller BGA's might be possible, by hand, with a hot air gun.

Good luck.

Oh, you could take to a contract manufacturer and have them do it for you. About $35 if I remember correctly.
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Element_115



Joined: 23 Mar 2002
Posts: 303
Helped: 19
Post06 Mar 2003 0:21   
I agree with Prouddad_1. Also you will need to have an X-ray taken to
see if all the pins/balls are truly connected. This saves you time in
debug , a trip back to that company, and possibly a chip that
might blow if a VCC or Ground is not connected or shorted.
It cost my old company ~$50 USD for up to 3 on one run.

If you do it by hand very be careful

Good luck
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toonafishy



Joined: 18 Jun 2002
Posts: 416
Helped: 17
Post06 Mar 2003 0:47   
A split vision system such as a SNIPER is the way to go. I think this is way beyond hand soldering with a hotair gun.
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prouddad_1



Joined: 05 Mar 2003
Posts: 6
Post06 Mar 2003 1:19   BGA equipment
The sniper is easy to use/easy to learn. Pricey if you're only doing a few chips and not justifiable. We needed it for ic development, so it was a necessity. We also managed to use ours for a makeshift temp test station.

OK industries also makes bga soldering equipment but I don't have much experience with thier equipment.
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gpoletto2



Joined: 17 Feb 2003
Posts: 14
Post06 Mar 2003 2:50   
This is almost impossible to do without a hot air gun or soldering oven.
Other methods can destroy the chip.

Sad
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