It looks like section 9, and perhaps section 9.1 specifically, of
IPC-SM-782A has the information you need, if they are the standard 1.27mm
(or .05 in) pitch.  Other sub sections of section 9 deal with different
pitches of SO IC packages.

-----Original Message-----
From: Sefika Ozkal [mailto:[log in to unmask]]
Sent: November 26, 2002 8:32 AM
To: [log in to unmask]
Subject: [TN] Footprint



 

 

 

Hello,

 

I have a problem about plastic small outline package type.

I could not find the recommended footprint for two devices which are having 

SO8 and SO20 packages.

Is there any one who knows to calculate the footprint values?

Or, is there a standart I could use to solve this problem?

I could not find aanything from IPC-SM-782A. Am I in a wrong way? 

I would be waiting for your answer.

 

Best Regards,

 

 

Sefika Özkal

Electronics Engineer

 

ASELSAN Inc.

Microelectronics, Guidance and Electro-Optics Division

Electronic Design

Address : P.O. Box:30, Etlik 06011 Ankara,TURKEY

Tel         :+90 312 847 53 00  Ext:4698

Fax        :+90 312 847 53 20

e-mail     : [log in to unmask]

 

--------------------------------------------------- Technet Mail List
provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a
message to [log in to unmask] with following text in the BODY (NOT the subject
field): SIGNOFF Technet To temporarily halt or (re-start) delivery of
Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To
receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest Search the archives of previous posts
at: http://listserv.ipc.org/archives Please visit IPC web site
http://www.ipc.org/html/forum.htm for additional information, or contact
Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
----------------------------------------------------- 


---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------