If the pins are tempered they should not be trimmed. Also IPC 610 and
J-STD 001 say " should" a recomendation. If they don't cause a problem
in processing. Like catching on the fluxer at wave solder and do not
pose a problem mechanically in the end item you "should not" ( my
recomendation) have to trim. We don't unless specified on the
documentation except where the lenghth causes a problem later. 
Charles Caswell
Process Lead, PCB
Frontier Electronic Systems

-----Original Message-----
From: TechNet E-Mail Forum. [mailto:[log in to unmask]]
Sent: Wednesday, October 17, 2001 4:58 PM
To: [log in to unmask]
Subject: [TN] Trimming Leads... 


Hi All,

I've got a question about trimming leads on components such as three-row
DIN
connectors, machine pin sockets, PGA devices, things like that...

In the past, I've never trimmed the leads on components like that. But I
can't find any reference that says those are things that you don't lead
clip...

The reason I'm asking is the -610 and J-STD say that for class-3, the
leads
are not supposed to be longer than 1.5mm (.0591"). Should leads be
clipped on
the kind of components I outlined above if they exceed that?

Thanks!!

-Steve Gregory-

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