Mark,
I've only ever used the concave type by Panasonic
(EXB series). Their datasheet mentions "superior
solderibility: self alignment by unique concave
terminal design". I thought them kind of odd as
well when I had to create a footprint. The Phycomp
convex part looks like it might provide a tighter
footprint since it has a smaller "foot" area. Since
almost all the Panasonic types are the concave type
and other manufs. only provide this type as well,
it leads me to believe this is the 'preferred'
type.

Ron Olinyk, CID
Mindlink Technologies

At 04:23 PM 11/29/02 +0000, you wrote:
Hi Guys,

I am currently creating a footprint for an "Array
chip Resistor" size 4 x
0603
e.g. Phycomp ARC241. But, there is a choice of two
styles!

My questions are:

Why the two types of termination (concave and
convex)?

What advantages do each offer?

Which is preferred etc?

Hope you can help!

Regards,

Mark.

Mark Holmes PCB Designer
Helvar Merca Ltd.
Hawley Mill, Hawley Road,
Dartford Kent.
DA2 7SY England.

Tel: 01322 222211
mailto:[log in to unmask]

Complete Lighting Control Solutions:
http://www.helvar.co.uk

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