Dave

IMHO, not a very good idea.
a) total destruction, not repairable
b) sputters copper all over surrounding items, possibly causing a
short-circuit in other circuits (I've seen this happen)
c) difficult to control blowing capacity
d) frequently time lag of blowing too long
e) if using FR-4, heating will result in the release of corrosive
hydrobromic acid gases, even if blowing does not succeed
f) fire hazard: FR-4 will not readily propagate a flame, but it can char
and smoulder.
IOW, the idea is reVolting (pun intended), compared with a replaceable
fuse.

I would MOST certainly not wish to fly on any aircraft protected that
way!

Brian


"Hipp, Dave HS-SNS" wrote:
>
> Good day,
> Can you please point me to web sites dealing with fusible links on printed
> wiring boards? I am really interested in current (no pun intended)
> applications or DOE results.
> We want to use this technology in our next product (secondary power
> distribution on commercial aircraft) and I need to get up to speed.
> We are currently designing a DOE board with various neck down widths and
> lengths. With some lessons learned, maybe we can whittle down the number of
> experiments.
> Other ideas we're investigating are short pieces of wire (manufacturing
> doesn't like that) and very small SMT fuses.
>
> Regards,
> Dave Hipp
> Project Engineer - Common SPDA
> Business and Regional Jet Enterprise
> Hamilton Sundstrand Aerospace
> 815-226-6183   FAX: 815-226-6748
>
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