13 Aug
2020
13 Aug
'20
11:16 p.m.
Chuck Guzis via cctalk wrote:
On 8/13/20 9:58 PM, dwight via cctalk wrote:
Of course, it is not just about the resistance, but the resulting
thermal cycling at the endpoints... About 25 years ago, I learned the
hard way about keeping each amp across at least two DB-whatever pins in
experimental hybrid-electric vehicles.? Nowadays we routinely x-ray
crimps for safety-critical things such as ABS harnesses.?? Ampacity
calculations differ wildly accross applications.
carlos.
How much current is ir suppose to carry? I'd
just replace it with a piece of wire wrap wire if it is less than an amp.
Of course, I assume you've fixed what ever failed to cause it to blow.
Gold wire is expensive.
Dwight
According to my tables, AWG 30 copper wire has a resistance of 0.107 ohm
per foot or about 9 milliohm per inch. I suspect that it would work
under almost all PCB repair conditions. I've repaired power traces on
CPU boards using WW wire with no ill effects.
--Chuck