Electronics Forum: prf (Page 1 of 1)

Number of times reworking

Electronics Forum | Wed May 28 08:25:08 EDT 2003 | davef

That's what we do [no more than three reworks or mods]. Your "four reworks permissable" was probably based on the 55110 five thermal cycles, counting wave soldering as the first cycle. How do you plan to keep track of each of those rework actions?

Re:What are differences in Mil-P-50884C Vs Mil-PRF-31032/3

Electronics Forum | Fri Sep 22 12:51:18 EDT 2000 | K. Chak

Hi Folks, Can anyone please tell me the differences between Mil-P-50884c and Mil-PRF- 31032/3. We are dealing with a quote for flex PCB. Thanks in advance Regards Kc.

Re: Re:What are differences in Mil-P-50884C Vs Mil-PRF-31032/3

Electronics Forum | Sat Sep 23 09:50:40 EDT 2000 | Dave F

KC, Try: Mil-P-50884C - http://astimage.daps.dla.mil/quicksearch/basic_profile.cfm?ident_number=27738 Mil-PRF-31032/3 - http://astimage.daps.dla.mil/quicksearch/basic_profile.cfm?ident_number=201451

Standarized Part Descriptions

Electronics Forum | Tue Jun 19 18:18:31 EDT 2001 | davef

You can make this as complicated as you'd like. Look at: http://fcim.dscc.dla.mil/Programs/MilSpec/default.asp?DocTYPE=PRF

seperation of soldermask and pcb

Electronics Forum | Tue Mar 25 11:43:48 EDT 2014 | sara_pcb

It is Solder Mask on Bare copper, The land finish is HASL as per MIL-PRF-55110G which accepts trace of HASL as acceptable. Wetting is acceptable. regards, R.Saravanan

Tinned leads and where the component body is defined

Electronics Forum | Thu Sep 03 22:03:32 EDT 2020 | SMTA-64386139

Both conditions are acceptable for this bottom brazed flat pack package. The solder coverage must be within 0.070 inch of the lead/package interface per MIL-PRF-38535, paragraph A3.5.6.3.4.a. While that requirement could allow for a gold gap near t

Vacuum Bags

Electronics Forum | Wed May 16 13:06:33 EDT 2007 | stepheniii

3.3.2.1 Moisture Barrier Bag (MBB) The moisture barrier bag shall meet MIL-PRF-81705, TYPE I requirements for flexibility, ESD protection, mechanical strength, and puncture resistance. The bags shall be heat sealable. The Water Vapor Transmission Rat

Re: ESD Floor Tile

Electronics Forum | Tue Jul 13 14:17:00 EDT 1999 | Scott

I am looking for suppliers of ESD floor coverings. I currently have ESD carpet and I would like to replace them with ESD Tile. Help Me MD Cox Here's a few numbers to call, most are manufacturers that will have a Rep in your area: 3M

PCB storage for lead Free

Electronics Forum | Tue Sep 16 20:41:41 EDT 2008 | davef

Q1. Can anyone tell me if there is a procedure for storing raw PCB's? A1. Yes, there are thousands of procedures for storing raw PCB. Why so many? Everyone writes their own procedure. Generally, they say: * Boards require individual separation and p

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