Doug,
There are a few sources for this type of information. Check out MIL-STD
2000, where on Table V (Page 23), you have the contamination limits for
solder, and the interval levels for testing. The MIL-STD makes the
distinction between preconditioning and wave soldering.
Also, NASA STD-8739.2 Table 7-1 provide the solder contamination levels.
Hope this helps.
Good Luck.
Lee Whiteman
Senior Manufacturing Engineer
E-Mail: [log in to unmask] <mailto:[log in to unmask]>
Ph: (610) 362-1200 x208
Fax: (610) 362-1290
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of McCall,Doug
> Sent: Monday, September 23, 2002 6:16 AM
> To: [log in to unmask]
> Subject: [TN] Wave solder bath analysis
>
>
> Techies,
>
> I am interested in finding out what the solder analysis figures
> should be from the sample taken from the flow solder bath sample.
>
> Percentages of the following elements would be useful: -
> Tin, lead, antimony, copper, zinc, iron, nickel, bismuth, cadmium,
> Silver, gold, arsenic, aluminium etc.
>
> We are using 63 / 37 bar solder into the machine.
>
> Also any mil-spec equivalents would be useful.
>
> Thanks in anticipation,
>
> Regards,
>
> Doug McCall
> PCB Manufacturing Engineer - Eastbourne
> BOC EDWARDS
> Marshall Road,
> Eastbourne,
> East Sussex,
> BN22 9BA UK
> Tel: +44 (0) 1323 501 147
> Fax +44 (0) 1323 509 824
> mailto [log in to unmask]
>
> BOC Edwards is a part of BOC Limited
> Registered Office: Chertsey Road, Windlesham, Surrey GU20 6HJ
> Number 337663-English Register
> Ultimate holding company: The BOC Group plc
>
>
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