[Milsurplus] Solder Joints

[Jim Whartenby]

In MIL-STD-2000A, look at Figure B-16
In MIL-S-45743E, look at paragraph 3.4.5.3 and 3.4.5.4.1
The former replaced the latter but MIL-S-45743E has better illustrations and actual color photos of acceptable and rejected soldering to various terminals, starting on document page 36 through page 57.
I'm in the process of replacing the connector on an R-390/URR power supply which is missing the male contact on pin 1.  The replacement connector is used and every solder terminal has a 180 degree wrap.  Every strand of the wire is visible under the solder.  Impressive workmanship.Jim
Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy 

    On Monday, June 23, 2025 at 01:27:21 AM CDT, Hubert Miller <kargo_cult at msn.com> wrote:   

 
>MIL-STD-2000A is perhaps the current military soldering spec, See:
 
https://electromet.com/wp-content/uploads/2015/09/Electromet-MILSTD2000a.pdf
 

It indicates that the wrap around a terminal is a minimum of 180 degrees and 270 degrees maximum.  Unsoldering is as much a skill as soldering.  The only real requirements are patience, a little solder wick, a pick to unwrap the wire and some more patience. 
  
 
This doc is not what you’d call “gripping reading”. However – on what page will i find the above lead wrap info ? I didn’t find it on my first pass.
 
180 degrees is ½  360, so i’m having a tough time imagining a 180 lead wrap.
 
-Hue Miller

  
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