Electronics Forum: sir (Page 1 of 39)

SIR Testing

Electronics Forum | Mon Apr 22 10:47:18 EDT 2002 | devajj

Dr. Lee, How long is the typical SIR test for fluxes? Where can I find more info on SIR testing? Thanks, Joe Devaney

No clean with higher SIR values

Electronics Forum | Thu Jun 08 16:46:07 EDT 2006 | proy

I would like to use a no clean paste on an assembly, but seams most no cleans only get to SIR values of 10 E10 or so. Can anybody recommend something with a higher SIR residue? Peter

OSP and SIR

Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend

We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib

S.I.R. Of PCB

Electronics Forum | Tue Aug 23 09:53:05 EDT 2005 | davef

There's some good background information on SIR [surface insulation resistance] on the web. Here's an example: http://www.tracelabs.com/TechLibraryDoc.aspx?id=4 Look to IPC-9201 - Surface Insulation Resistance Handbook SIR readings vary with: * C

Vapor phase soldering SIR test

Electronics Forum | Mon Feb 23 14:44:08 EST 2009 | sunny

Are boards produced using Vapor phase ovens dirtier than N2 Reflow oven. Are there any studies/papers someone can point to? if not what are the methods to verify this? is IPC specified SIR test using 24B SIR test coupons? please advise. thanks in adv

CAF

Electronics Forum | Thu Jul 27 13:45:18 EDT 2006 | mumtaz

Thank you sir.

board cleaniness SIR test service

Electronics Forum | Mon May 16 17:51:04 EDT 2005 | ASIR

Does anybody knows any outside service for SIR testing. I am being question if my cleaning process is good enough and I don't have any ways of proofing it.

S.I.R. Of PCB

Electronics Forum | Tue Aug 23 08:06:28 EDT 2005 | mskler

Hi every body. I want to know acbout S.I.R. of PCB . What it should be & how we can measure? Is for diffrent frequencies application board it is diffrent? Please suggest.

SIR Testing

Electronics Forum | Tue Jul 04 07:40:22 EDT 2006 | slaine

I had a couple of reps in from Indium a few weeks back, and they were promoting a flux for rework that was designed to have low SIR, No clean. Havent tried it yet. The product is Flux NC 771, might solve your problem? Regards Slaine

Vapor phase soldering SIR test

Electronics Forum | Mon Feb 23 17:51:55 EST 2009 | ldavis

Chet, We've found the exact opposite. Boards we process in VP are cleaner than convection. Sorry but I cannot provide any meaningful data to back that up though. We conduct SIR testing internally using our high impedance pcba's.

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