Electronics Forum | Mon Dec 09 09:31:35 EST 2002 | MA/NY DDave
Hi Just one idea, many exist. If your electrical designers can tolerate it, sometimes a cross hatched design is used under areas where electrical performance is important. It reduces coupling and impedance effects compared to a full layer. Elimina
Electronics Forum | Sun Dec 08 22:20:39 EST 2002 | grantp
Hi, We have been manufacturing a PCB, however it's been quite tricky to profile, as the edges of the PCB are reflowing before the center of the PCB. I have looked at the design, and there is a small power plane for 2.5 Volt in the center of the PCB
Electronics Forum | Wed Dec 31 08:55:09 EST 1997 | justin medernach
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Sat Jun 09 00:53:34 EDT 2001 | ianchan
Hi Folks, My Production runs a uBGA-liken product, and uses Pallets to support the 0.8mm thick pcb, during the SMT + reflow oven process. Process/QA see occurs: 1) 0402 unsolder? 2) 0402 tombstone? 3) "uBGA" poor-visual joints (dry joints)? Took
Electronics Forum | Sun Jan 11 11:28:14 EST 1998 | Bob Willis
Most componnent cracking is mechanicaly produced a guide to causes of capacitor damage is included as a download file on my web page www.bobwillis.co.uk I feel that the supplier is looking to blame some one else. IPC make comment on pre heating chip
Electronics Forum | Sun Jan 11 11:28:12 EST 1998 | Bob Willis
Most componnent cracking is mechanicaly produced a guide to causes of capacitor damage is included as a download file on my web page www.bobwillis.co.uk I feel that the supplier is looking to blame some one else. IPC make comment on pre heating chip
Electronics Forum | Thu Jan 01 13:04:42 EST 1998 | scott cook
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Wed Dec 31 10:09:27 EST 1997 | Ken Daniels
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Wed Dec 31 23:02:19 EST 1997 | Scott McKee
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Tue May 13 17:53:54 EDT 2014 | anvil1021
Hello Michel...this might be a bit of a battle finding the low thermal EMF material that you are looking for. The first one that comes to my mind is Bismuth Selenium Telluride, with either a nickel or cobalt doping agent. Silver went away from this
Reflow ovens for automated SMT PCB assembly, specializing in lead free processing and nitrogen reflow. The best convection reflow ovens on the market.
4 Vreeland Rd.
Florham Park, NJ USA
Phone: 973-377-6800