Electronics Forum | Thu May 07 08:11:58 EDT 2009 | davef
We don't have a good answer for you, but we do have several thoughts on the issue: * First, tin in your solder or solderability protection is going to diffuse into the copper trace or pad on the board naturally. You can stop that by using a protectiv
Electronics Forum | Mon May 25 04:51:44 EDT 2009 | microdot
hi, we tried making a profile of a chip ATI 9000 mounted on a toshiba laptops, this is on a small pcb. the picture i have enclosed is used to remove the but when we tried to solder the chip using the same profile..it didnt work. Can anybody suggest
Electronics Forum | Wed May 27 14:29:25 EDT 2009 | jax
Universal use to sell a a device, machine mountable, that could place this connector. I am not sure if they still sell it... It has been 3-4 years since I saw it in action. The upgrade would force the boards stops to remain in the Up position while
Electronics Forum | Tue Jun 09 18:44:20 EDT 2009 | dyoungquist
We are using a water soluble flux which requires the assemblies to be cleaned in an ultra sonic cleaner after assembly. Is there a standard that specifies how long the assemblies need to be baked/dried after being submersed in a water solution for a
Electronics Forum | Sat Feb 27 20:06:13 EST 2010 | jmelson
Oh, the CSM only has one XY offset for each feeder rail. If you don't like it, you can teach any particular feeder location. The crazy thing is the teach camera is an inch in front of the heads (-25 mm Y) so you can't put the teach camera over the
Electronics Forum | Fri Jan 29 21:31:46 EST 2010 | aqueous
I would recommend the following paper entitled "Cleaning for Reliability Post QFN Rework" by Mike Bixenman (Kyzen) and myself (Aqueous Technologies). While it discussed cleaning under QFN's in a batch environment, it is also applicable to cleaning u
Electronics Forum | Wed Feb 03 18:52:46 EST 2010 | mika
Hi, Not really. "In aerosol sprays, friction is generated as liquids race through the plastic tubes of the spray can. This creates powerful electrostatic charges (ESD) of up to 12,000 volts; ESD voltages as low as 150 volts can cause ESD damage." I
Electronics Forum | Fri Feb 05 20:39:41 EST 2010 | localperm79
I've recently been placed in control of operations of our SCS conformal coat sprayer and I must eliminate problems with wicking of humiseal 1b73 into surface mount connectors while also trying to minimize masking as much as possible. We use a 55:45
Electronics Forum | Wed Mar 03 06:13:23 EST 2010 | grahamcooper22
The picture shows that the heel of the device lead is not on the pad. Either bad placement or wrong pad dimensions. I imagine most customers would reject this joint as only a small part of the lead is actually in the solder. With no heel fillet the j
Electronics Forum | Wed Sep 29 11:25:49 EDT 2010 | mazjal7
Hi, We are placing a Surface Mount connector on a flex circuit, we are planing on using SMT carriers to support the flex through the SMT process. Underneath the connector a stiffener needs to be adhere, I'm not sure if we should have the flex manu
The SMTA membership is a network of professionals who build skills, share practical experience and develop solutions in electronic assembly technologies and related business operations.
Training Provider / Events Organizer / Association / Non-Profit
6600 City W Pkwy
Eden Prairie, MN USA
Phone: 952-920-7682
