RE: [TN] Definition of Supported/ unsupported hole

Because breakout on an unsupported hole will prevent it from wave soldering correctly.

Neil

-----Original Message-----
From: Mcmaster, Michael [mailto:[log in to unmask]]
Sent: 26 June 2002 01:15
Subject: Re: Definition of Supported/ unsupported hole

So if it's unplated, why does an unsupported hole have a breakout (or more appropriately a "no breakout") requirement (IPC-6012 Table 3-5)?

----------
From: Neda Thrash[SMTP:[log in to unmask]]
Reply To:       TechNet E-Mail Forum.;Neda Thrash
Sent: Tuesday, June 25, 2002 1:36 PM
To:     [log in to unmask]
Subject:        Re: [TN] Definition of Suported/ unsupported hole

Peter, a supported hole in a PWB is plated through the board according to IPC-T-50 (Terms and Definitions for Interconnecting and Packaging Electronic Circuits) " or otherwise reinforced". The unsupported holes do not contain plating.

>>> [log in to unmask] 06/25/02 02:22PM >>>
Technet,

Can anyone explain the difference between a supported
and unsupported hole on PCB?

I am reading a section on IPC-A-600 RevF and section
2.10.3/4 specify difference acceptance criteria
according to the hole type.

Rgds,
Peter

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