Desoldering SMD information

[Christian Blondin]

Hi!
I started recycling SMD chips, resistors, etc. But I have a few questions:

Do I need a big SMD rework station to desolder PLCC sockets? or is there a
special technique? I certainly don't have an unlimited budget, but I have a
home-made needle tip, soldering braid (though it doesn't appear to work with
SMDs) and patience.

What's the point of having a 0 ohm resitor? I found a few on PC
motherboards. theyre marked 0000, and that's what I measure.

Maybe I should take all my ( ) questions somewhere else... Does anyone know
where I could find information, and techniques?

thanks for hlep

 

[michael turner]

On Mon, 09 Feb 2004 20:50:18 -0500, Christian Blondin wrote:

<snipped>

What's the point of having a 0 ohm resitor? I found a few on PC
motherboards. theyre marked 0000, and that's what I measure.

They're used as jumpers, to configure a board/device in a certain way.

See also:
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&q=zero+ohm+resistor&sa=N&tab=wg
1380 mentions in sci.electronics.... Another one for the FAQs ?

http://www.practicalcomponents.com/zeroohm.htm

--
Michael Turner

 

[Sunny]

Christian Blondin wrote:

Hi!
I started recycling SMD chips, resistors, etc. But I have a few questions:

Do I need a big SMD rework station to desolder PLCC sockets? or is there a
special technique? I certainly don't have an unlimited budget, but I have a
home-made needle tip, soldering braid (though it doesn't appear to work with
SMDs) and patience.

What's the point of having a 0 ohm resitor? I found a few on PC
motherboards. theyre marked 0000, and that's what I measure.

Maybe I should take all my ( ) questions somewhere else... Does anyone know
where I could find information, and techniques?

thanks for hlep

There was a thread titled "SMD desoldering tutorial?" on this newsgroup
in early January this year, which discussed several SMD rework
techniques using low-budget equipment. It's easy to find with Google.

 

[Sunny]

michael turner wrote:

On Mon, 09 Feb 2004 20:50:18 -0500, Christian Blondin wrote:

snipped

What's the point of having a 0 ohm resitor? I found a few on PC
motherboards. theyre marked 0000, and that's what I measure.


They're used as jumpers, to configure a board/device in a certain way.

They are also used as fuses - you'll often find a 0 ohm resistor in
series and a zener diode to ground near the Vcc input of PC motherboard
chips to protect the chips from voltage spikes.

See also:
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&q=zero+ohm+resistor&sa=N&tab=wg
1380 mentions in sci.electronics.... Another one for the FAQs ?

http://www.practicalcomponents.com/zeroohm.htm