We are a CM and have been provided boards with HASL and have been able to build with HASL. Of course, it depends on the quality/flatness of the HASL, paste, printing process, placement, and reflow, and a slew of other variables such as board size, thickness, etc. that may affect your ability to print, place, and reflow.
A nice flat surface would probably be best such as ENIG, Tin, Silver, OSP.
-Carrie
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of [log in to unmask]
Sent: Wednesday, January 28, 2004 10:26 PM
To: [log in to unmask]
Subject: Re: [TN] What are the recommendations of PCB surface finishing for (0.5mm pitch) CSP pacakge component ?
Importance: High
Could we try to use HASL ?????
Best regards
Irving Lee
TAO Inventec
Tel :03-3900000 ext 2164
mailto:[log in to unmask]
-----Original Message-----
From: DUTTON Phil [mailto:[log in to unmask]]
Sent: Thursday, January 29, 2004 11:25 AM
To: [log in to unmask]
Subject: Re: [TN] What are the recommendations of PCB surface finishing for (0.5mm pitch) CSP pacakge component ?
I'd go for ENIG or Immersion Silver.
Phil.
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Thursday, 29 January 2004 1:19 PM
To: [log in to unmask]
Subject: [TN] What are the recommendations of PCB surface finishing for (0.5mm pitch) CSP pacakge component ?
Importance: High
It is urgent for me !
Best regards
Irving Lee
TAO Inventec
Tel :03-3900000 ext 2164
mailto:[log in to unmask]
---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------
|