TECHNET Archives

February 2000

TechNet@IPC.ORG

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 >>]

Print Reply
Subject:
From:
Mauricio Castro <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 2 Feb 2000 18:55:31 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (83 lines)
Scott,

Likes

Scoring

- PCB Cost
- Less PCB cycle time
- Easy to separate with cheap tools
- Good for board dimensions with > 10 mils tolerance

Tabs
- Unique for PCB with irregular shapes.
- If you have good singulation system, you cand have < 10mils of board
tolernaces.


Dislikes

TABS
- Hard to separate by an operator.
- Equipment for singulation is expensive.
- If you use have a big panel, you'll have very flexible board and can
cause problems in the Pick'n Place Machine or in wave Solder, if you don't
use fixtures.

Scoring
- PCB's with regular Shapes (squares, rectangles)
- Not good for board tolerances < 10 mils
- You can have some problems due to excess of burr in the scored board edges
- V-Grooves only in lines across of Process Panel. (some PCB shops can do
score jumps, ie:Pro-Tech).


Regards,
Mauricio Castro

At 09:19 AM 2/02/00 -0800, you wrote:
>I have my own thoughts of likes and dislikes on this issue but I would like
>to know what everyone else thinks about Scoring Vs break away tabs.
>
>Scott Lefebvre
>530-265-1041
>[log in to unmask] <mailto:[log in to unmask]>
>
>##############################################################
>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
>##############################################################
>
>
Mauricio Castro
New Products Mgr
CIMME SA de CV
Av. Federalismo Sur 368 Int 1-B, Col. Centro CP 44100
Guadalajara, Jal, Mexico
Tel: (523) 826-5437   Fax: (523) 826-5462
www.cimme.com.mx

##############################################################
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