IPC-D-275 was released in 1991, several months before IPC-RB-276 was 
published in 1992. IPC typically doesn't reference 
obselete, nonexistent nor still-to-be-published specifications.

The revisions to -275 and -276 will establish the two-way relationship of 
the documents.

Hope this helps.

Mike Buetow
IPC Technical Staff
2215 Sanders Road
Northbrook, IL 60062
P: 847-509-9700, ext. 335
F: 847-509-9798
[log in to unmask]


On Tue, 23 Jul 1996 [log in to unmask] wrote:

> Is the IPC-D-275 spec supposed to reference the IPC-RB-276 spec?  IPC-RB-276 
> supercedes IPC-SD-320 and IPC-ML-950, but I can't find either of these 
> referenced either.  IPC-RB-276 references the IPC-D-275, but not the other 
> way around.  How do I tie in the performance specification from IPC-D-275? 
> 
> Larry Campbell
> BFGoodrich, Avionics Systems
> [log in to unmask]
> 
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