Hi Suzy,

Simply put, wouldn't the minimum spacing be dependent upon the tooling
clearances required? The pin insertion tool will have clearances to consider
for the anvil and press. The Pick and place machine will have clearances to
take into consideration to avoid a collision with the pin if its inserted
before pick and place operations. And the voltage spacing needed to avoid
arcing if there are high voltages involved. The surface mount component type
would also play into the decision. Is the Component on the top surface or
primary side away from wave solder? Or on the bottom surface or secondary
side of the board in the wave solder. This may also affect clearances due to
wave solder bridging issues.
How close other features like tooling rails, pins, test points etc. may
affect the minimum distance the to pads would be able to maintain and not
cause a manufacturing, test, or operational problem.

- Bill Brooks


-----Original Message-----
From: Susy Webb [mailto:[log in to unmask]]
Sent: Thursday, July 25, 2002 2:02 PM
To: [log in to unmask]
Subject: [DC] spacing question


Can someone tell me what the minimum spacing would be between a press fit
connector pin and a surface mount component pad. TIA, Susy

Susy Webb, CID
Sr PCB Designer
Carlo Gavazzi Computer Systems
222 Pennbright Ste 210, Houston, Tx 77090
V: 281-875-1500 x33
F: 281-875-0540
Cell: 281-450-3665
email: [log in to unmask]
alt email: [log in to unmask]

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