Hello all,

A recent Customer requires us to work to J-STD-001 Class 3 and 
has been examining our process.

We are currently using Type OR (organic) flux with activity level H1. 
Our Customer has pointed out that Para. 3.3 of J-STD-001D 
requires that activity level LO or L1 fluxes be used.  If we want to 
continue to use H1 flux, then "data demonstrating compatibility 
shall be available for review".

Appendix C of J-STD-001D details the tests needed for 
demonstrating compatibility.  Currently we do a ROSE test as part 
of our process.

I talked to a solder flux manufacturer and they said that our 
Customer would have to define the required tests if we want to 
keep using OR H1 flux.  They also said that various labs exist 
which could do the required tests.

However, there is a Note in Appendix C which says:

"This testing is a 'site specific' qualification process to be done at 
the manufacturer's location using production processes and 
equipment whenever possible."

This note would suggest that we can't send samples out for test, 
as the testing must be done at our facility.

It is also not clear whether the test is done on populated PCB 
Assemblies or bare boards.

Something else that worries me is that, as per para. C-5.1, a 
minimum of 10 samples are required, and as per para. C-6.2, "all 
biased sites need to have the components removed...preferably by 
cutting of leads."  Does this mean that, if PCB Assemblies are 
tested, that the components will be destroyed?  Our contract with 
our Customer is for low volume quantities, and losing 10 
Assemblies is not an attractive option.

I would appreciate any help in clarifying exactly what we need to do 
to qualify OR H1 flux.  I find Appendix C of J-STD-001 confusing.

Please not we are also considering the option of changing our flux 
to Type LO or L1 as per J-STD-001 Para 3.3

Best regards,
Paul Baine
Q.A. Manager
C-Tech Ltd.
PB/jstj

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