It seems to me  too close. Is it from the centre of the pin to the edge of adjacent SMD part?

For ERSA multiflow and Inertec  we use  as a best robust  free of wash offs  3.7- 4 mm from the edge of the selectively soldered pad to the edge of the adjacent SMD pad. For ERSA  Versaflow ( single nozzle ) it can be much smaller   2.5 - 3 mm depends on configuration  and layout . Other machines  ( Soltec, Pillarhouse you should  research ...)

Best regards

Vit Sklenar  .
Robert Bosch (Australia) Pty.Ltd
RBAU-AE/MFE3
Locked Bag 66;Clayton South, VIC 3169
AUSTRALIA
Tel: +61 3 9541-7734
Fax: +61 3 9541-3909
Mob: +61 434 079 373

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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of John Koleszar
Sent: Tuesday, 17 November 2009 4:19 AM
To: [log in to unmask]
Subject: Re: [TN] Selective Soldering Nozzle Clearance

Jack,

I use 0.100" as a target clearance.  This will accommodate the majority of
machines and also selective solder pallets.

Regards,

John
John Koleszar

SMT Manager

Saline Lectronics, Inc.

710 N. Maple Rd.

Saline, MI 48170

734-944-2120 ext 294

[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Monday, November 16, 2009 12:01 PM
To: [log in to unmask]
Subject: [TN] Selective Soldering Nozzle Clearance

Greetings,

For anyone who does selective soldering:

I need to design a circuit board that has a few through-hole parts that will
be soldered using a selective soldering machine, but I haven't found out
exactly which one it is yet (ELSA). Is there a DEFAULT clearance I should
keep my SMT parts away from those Through-Hole pins, or do I really have
to customize it per machine?

thanks,

Jack (aka "the new guy")

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