LISTSERV - TECHNET Archives - LISTSERV.IPC.ORG

TECHNET Archives

November 1999

TechNet@IPC.ORG

	LISTSERV Archives
	TECHNET Home
	TECHNET November 1999

	Log In
	Register

	Subscribe or Unsubscribe

	Search Archives

Options:	Use Monospaced Font Show Text Part by Default Show All Mail Headers
Message:	[<< First] [< Prev] [Next >] [Last >>]
Topic:	[<< First] [< Prev] [Next >] [Last >>]
Author:	[<< First] [< Prev] [Next >] [Last >>]

Subject:	Re: Tapered Voids
From:	"Erat, Wolfgang" <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Mon, 1 Nov 1999 08:54:57 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (55 lines)

Hello Frank

had what looks like the exact same thing a few years back

happening predominantly or exclusively in small vias ?

our problem was airbubbles in the holes, preventing circulation and plating

fixed this with mechanical agitation.

good luck / Wolfgang

> -----Original Message-----
> From: Frank Freitas [SMTP:[log in to unmask]]
> Sent: Friday, October 29, 1999 11:04 AM
> To:   [log in to unmask]
> Subject:      [TN] Tapered Voids
>
> I'm looking for some information on the causes of tapered voids and how to
> eliminate them from the PWB manufacturing process.
>
> -----------------------------------------------
> FREE! The World's Best Email Address @email.com
> Reserve your name now at http://www.email.com
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information.
> If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
> 847-509-9700 ext.5365
> ##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################

ATOM RSS1 RSS2

LISTSERV.IPC.ORG