Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0vJS9R-0000S7C; Fri, 1 Nov 96 16:33 CST |
Old-Return-Path: |
|
Date: |
Fri, 1 Nov 1996 17:08:59 -0500 |
Precedence: |
list |
X-Loop: |
|
Message-ID: |
|
X-Status: |
|
Status: |
O |
X-Mailing-List: |
|
TO: |
|
Return-Path: |
<TechNet-request> |
From [log in to unmask] Mon Nov 4 10: |
28:03 1996 |
Resent-Message-ID: |
<"neryN3.0.gm9.lfdUo"@ipc> |
Subject: |
|
From: |
|
Resent-From: |
|
Resent-Sender: |
|
Parts/Attachments: |
|
|
We are looking to purchase an additional exposure unit for use on
primary resist.
We do not intend at this time to purchase a collimated light source but we
are still
interested in the ability to produce a sub 5 mil line and space.
My question is this:
of the 5K exposure units in our search: Colight, Byers, Orc and Olec,
the light sources
and internal construction (ie. reflector sheilds ) appear to be very similar.
Are there any
major differences ? Should I focus primarily on exposure plane intensity ?
If so, why
would unit A deliver 20 mw/cm2 and unit B deliver 40+ mw/cm2 when both use
similar 5 K bulbs ? Are these actual intensities or marketing numbers?
[log in to unmask]
Nationwide Circuits Inc.
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to: *
* [log in to unmask] with <subject: unsubscribe> and no text. *
***************************************************************************
|
|
|