NASA-STD-8739.3 dated December 1997 replaces NHB5300.4(3A-2).  Good luck.

Patrick Hogue
Materials and Processes Engineering
Honeywell Satellite Systems Operation
Glendale, AZ
(602) 561-3748
[log in to unmask]

> ----------
> From:         Kasprzak, Bill (esd) US[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Kasprzak, Bill (esd) US
> Sent:         Friday, April 16, 1999 9:24 AM
> To:   [log in to unmask]
> Subject:      [TN] : New Revision of NHB5300.4(3A-2)
>
> Fellow tech-net readers:
>
> Does anybody know if the NASA soldering spec NHB5300.4(3A-2), dated  1992
> is
> going to be revised ? In many different ways it is behind the times.
>
> One area of my concern is the limited number of solvents that can be used
> according to paragraph 3A312 of this document. Most of the materials
> listed
> are Ozone Depleting Chemicals, which are more or less banned. We're using
> isopropyl alcohol.
>
> Has anyone working to this spec gotten any different materials for
> cleaning
> flux, approved by NASA?
>
> Anyone out there using FluxoffCZ, from Chemtronics, for any applications?
>
> Please respond through the net or if you prefer, directly to me at
> [log in to unmask]
>
> Thanks,
> Bill Kasprzak
> Moog Inc.
>
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