Hi Bob,

how about clinching the leads for a defined standoff? This would also give
you a well defined strain relief. Suggestions about the mounting and
clinching geometry are displayed in IPC-A-610.

Schön' Gruss, best regards,

Thomas Ahrens, Memellandstr. 8, D-24598 Boostedt
Tel. ++(49) (0) 4393 97769   e-mail [log in to unmask]
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-----Ursprüngliche Nachricht-----
Von: Bob Crain <[log in to unmask]>
An: [log in to unmask] <[log in to unmask]>
Datum: Donnerstag, 3. Februar 2000 23:39
Betreff: [TN] Temporary stand offs for wave solder


We are converting some old hand solder aerospace PCA designs to wave solder.
The transistors and CKR05 type capacitors need temporary stand offs.

We cannot use standard dissolvable spacers because we use alcohol solvent
cleaning and are not allowed to use water.

Suggestions? One thing I would like to consider is a high temperature,
non-silicone, non-sulfur rubber sheet in thicknesses of .030" and .050." Any
ideas for the best material to use? Are there any removable clips that fit
over the parts to hold them up?

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