Bob
Is 2mm pitch QFN correct? It seems rather large.
Joe
In a message dated 10/3/2008 8:47:55 A.M. Pacific Daylight Time,
[log in to unmask] writes:
Thanks guys, good info.
The problem we're having is occasionally we have to use 2mm pitch QFN
parts and some small BGAs for test and proto.
When we go to all the CM around here they can't just squeeze us in.
The company is doing well and we're told that if we need something to
speed us to market, get it. We thought it might be useful to have a
small oven.
I tried eBay (of course!) and I'll look into the companies mentioned.
Thanks for taking the time to answer.
I have to say I don't post much here, but I sure as heck read every
post, you betcha.
Amazing what I've learned! Sure is a ton of stuff that most design side
folks don't have a clue about. Including me.
Regards,
Bob Wilson
E/M Designer, CID+
SpectraSensors, Inc.
11027 Arrow Route
Rancho Cucamonga, CA 91730
(909) 948-4110
www.spectrasensors.com
www.ipc.org
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert
Sent: Friday, October 03, 2008 6:20 AM
To: [log in to unmask]
Subject: Re: [TN] IR reflow oven
Bob, Kevin makes an excellent point about working with a good local
contract manufacturer. We've been using a method for some years that
has worked very well with two local CM's we deal with. We only build
our prototype boards in house as 100% of our production is done at CM's
domestic and offshore. We'll define the parts like BGA's and QFN's that
we know are difficult or impossible to solder in our lab, then consign a
small number of prototype boards over to the CM. While we're having the
boards fabricated, we ask our CM to get a stencil made. When we receive
the boards, we deliver them and the parts we want assembled to them.
They stencil the board, place the parts manually, then reflow them. We
take the boards back and finish the build by hand in our lab. The
advantage is that there's no impact to the production line and we can
quickly get our prototypes in the hands of engineers and software
developers. We've used both full and partial stencils for this
practice.
Bob Croslin
The Nielsen Company
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden
Sent: Friday, October 03, 2008 8:33 AM
To: [log in to unmask]
Subject: Re: [TN] IR reflow oven
Hi Bob,
Yours is not a simple solution, many questions come to mind. If you are
truly on the design side, and building assemblies is not your focus, why
invest capital in equipment you will seldom use? You don't mention the
actual pitch of the "PITA" component, but consider that of the SMT
process, reflow is only 1/3 of the simplest solution. How will you
apply paste and place the part(s)? The solder paste screening and
placement of fine pitch components can be just as, if not more,
challenging than the reflow process.
You may be best served to locate and work with a good contract
manufacturer who is willing to work with you. Most are more than
willing to work with you from concept through prototype and production.
This is a win-win scenario, as a good contract mfr can provide valuable
DFM inputs and save you from design errors or needless capital
investment.
That being said, it is difficult to recommend a system for you without
knowing your parameters. I can provide a short list of some oven
manufacturers who may make budget-conscious systems that you are
seeking:
- APS / Novastar
- Essemtec
- Manncorp
Be sure to also check out the used market.
Good luck.
Kevin
-----Original Message-----
From: Wilson, Bob [mailto:[log in to unmask]]
Sent: Thursday, October 02, 2008 5:13 PM
To: [log in to unmask]
Subject: [TN] IR reflow oven
Hi,
Can anyone recommend a decent, small IR reflow oven, maybe in the
$1000-$2000 dollar range?
We're on the design side and trying to do these fine pitch parts in R&D
is a PITA.
Thanks!
Bob Wilson
E/M Designer, CID+
SpectraSensors, Inc.
11027 Arrow Route
Rancho Cucamonga, CA 91730
(909) 948-4110
www.spectrasensors.com
www.ipc.org
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0 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
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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 847-615-7100
ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
847-615-7100 ext.2815
-----------------------------------------------------
**************New MapQuest Local shows what's happening at your destination.
Dining, Movies, Events, News & more. Try it out!
(http://local.mapquest.com/?ncid=emlcntnew00000001)
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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 847-615-7100 ext.2815
-----------------------------------------------------
|
