John Ryaby

Thanks for your request. Do let me have your snailmail and email addresses to 
send the info because:

A	There just ain't enough room on the TechNet to give it all
B	It would bore the pants of most technetters - save SIR Doug 
([log in to unmask]) who might help me?

Best regardsGraham Naisbitt
[log in to unmask]

Tel: +44 (0)1276 691100
Fax: +44 (0)1276 691227

-----Original Message-----
From:	Ryaby, John 
Sent:	Thursday, June 26, 1997 2:39 AM
To:	Graham Naisbitt
Subject:	RE: Cleanliness of assembled boards

Graham,  I am interested in additional information regarding SIR testing of 
'no clean' boards.
John Ryaby

> ----------
> From:	Graham Naisbitt[SMTP:[log in to unmask]]
> Sent:	Wednesday, June 25, 1997 7:01 PM
> To:	MATI BARUCH; [log in to unmask]
> Subject:	RE: Cleanliness of assembled boards
> 
> As you will no doubt have surmised, how DO you cleanliness test
> no-clean. 
> Further, if you do, how clean is clean? I 1(g per inch2 of salt better
> than 
> 10? Will the board work OK?
> 
> For these reasons please refer to the IPC 9201 SIR (Surface Insulation
> 
> Resistance) Test Handbook.
> 
> SIR Testing is able to inform you if your circuit is reliable - it
> will not 
> inform you of what may be on the surface.
> 
> Another test is IC (Ion Chromatography) that will tell you what is on
> the 
> surface but not whether the circuit is reliable.
> 
> SIR testing equipment is now available with frequent monitoring to
> reduce test 
> times to a few hours not days. 
> 
> If you can provide me with your snailmail address, I will send more 
> information.
> 
> [log in to unmask]
> 
> -----Original Message-----
> From:	MATI BARUCH 
> Sent:	26 June 1997 04:40
> To:	[log in to unmask]
> Subject:	Cleanliness of assembled boards
> 
> The ANSI/J-STD-001 specifies cleanliness of assembled boards after 
> clean process. What are the requirements for assembled boards with
> flax 
> no-clean. 
> 
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