Hi Aleli! The JSTD-002/003 committees have been extremely active in the
evaluation of the wetting balance in terms of gauge
reproducibility/repeatability as part of an effort to evaluate the wetting
balance as an acceptable method for solderability testing. The wetting
balance test is current categorized within the 002/003 specifications as
"for evaluation only" test methodology as the investigation efforts are
continuing. The wetting balance test method has recently undergone
significant revision and both specifications allow the use the test method
for product acceptance testing provided user and vender can agree on a set
of pass/fail criteria. Please give me a call and we can discuss the
detailed efforts of the 002/003 committee activities concerning the wetting
balance.


Dave Hillman
JSTD-002/003 CoChairman
[log in to unmask]
319-295-1615




"Tumibay, Aleli" <[log in to unmask]> on 10/20/98 06:59:13 PM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
      to "Tumibay, Aleli" <[log in to unmask]>

To:   [log in to unmask]
cc:
Subject:  [TN] Solderability Test for SMT: Dip and Look or  Wetting
      Balance?




Hello to all the people in this list.  I hope you can help me.

1. Now that the direction the industry is taking is towards the
development of packages with reduced lead widths (primarily because of
the shrinking package size),  is the "Dip and Look" method still the
preferred test for Solderability Test?

2. I have asked around other assembly companies and those who purchased
the Wetting Balance system told me that they are unable to qualify the
machine because of  "calibration problems" and never got to use it since
it was purchased.   Do we have somebody here who encountered similar
problems?  Was it ever resolved?  How?

If there are suppliers of various Solderability Testers here, kindly
e-mail me privately ([log in to unmask]).   Thanks a lot.
Best Regards,



Lei Tumibay
Lead Finish Group - Assembly Engineering
Analog Devices - General Trias
Cavite, Philippines
E-mail: [log in to unmask]

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