Bill,

I just went through this exercise and here is what I found :

IPC-R-700 defines several methods for applying jumper wires based on
material or contact/surface and other things.

IPC-A-610 (9.3) says they are acceptable for type 1,2,3 boards.

IPC-D-275 (4.8) says jumpers are considered a component and need to be
documented as such, but are again acceptable on all types, including
military applications.


What I determined was essentially, as long as jumpers are done correctly
there is no stated limit I could find.  If you happen to get some other
data, I'd appreciate a quick note and point me to it.

Hope this helps..........DT





At 03:43 PM 5/20/98 -0400, you wrote:
>  Could you tell me how many "jumper wires" or
>"haywires" are allowed on a Printed Circuit Card
>Assembly, Class 3, High Reliability & what spec
>they are covered by????
>
>Bill Burke
>Printed Circuit Board Designer
>Lockheed Martin Fairchild Systems
>300 Robbins Lane
>Syosset, New York 11791-6012
>Voice:  (516) 349-2454
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