Electronics Forum | Wed Jan 05 07:40:06 EST 2000 | jacob lacourse
we have looked into a number of depaneling machines and can't justify the cost. what we are trying to do is to eliminate failures due to part stress when employees are breaking out the boards by hand. I heard about pneumatic scissors one day but to
Electronics Forum | Tue Dec 01 10:19:43 EST 1998 | Dave F
| I have a PCMCIA type pcb with an 0603 resistor situated exactly half way along the longest edge the device is 2mm form the edge of the pcb. I have experienced incidences of the device fracturing after breakout (hand operation) (pcbs are routed) Co
Electronics Forum | Thu Nov 13 11:45:04 EST 2008 | pbarton
We have seen a similar problem. Turned out to be mechanical stress on the component caused by the method of location and clamping at ICT. Where is the component located on the assembly? Poorly adjusted clamping pillars on clamshell fixtures can cause
Electronics Forum | Thu Mar 19 12:22:54 EDT 2009 | mhjohnso
While investigating a routing study for a new bga device, I found the vendor used round 20 mil pads on 0402 decoupling caps.This allows fitting the caps between break out vias on their 1mm pitch BGA. Round pad gives about 8 mils diagonally from pin t
Electronics Forum | Wed Sep 07 10:34:52 EDT 2005 | PWH
Have experienced this on a few different cap. parts. Agree with other postings. Following are solutions to problems we have had: 1) Cracked cap too close to board edge per IPC spec. Designer replaced part with 3 caps in series to eleviate stress
Electronics Forum | Wed Dec 06 07:41:48 EST 2000 | John
To the post on the depaneling system. Almost any smt component can (and will according to Murphy's law) be damaged during hand breakout. Our company began using SMT a few years ago, and our primary customer absolutely will not allow us to hand brea
Electronics Forum | Thu Apr 13 03:46:19 EDT 2000 | PeterB
We are a small/medium contract manufacturer and like most we do our best to ensure that PCB's we process are panelised to ensure efficient throughput and good quality results. Sometimes however we are stuck with free issue PCB panels supplied by som
Electronics Forum | Thu Sep 14 19:19:38 EDT 2006 | SWAG
I would try to panelize as big as you can for sure as you'll spend more time handling single boards than running anything. Additionally, this size is very close to smallest capabilities on GSM depending on your configuration. Fids on all boards in
Electronics Forum | Wed Sep 14 07:37:56 EDT 2016 | awhite
Thanks for the link, Ive actually always wanted to learn Italian :) Unfortunately, because this has been an issue for about 2 weeks now, I think Ive read almost everything ever written about SMEMA protocol. The process seems so simple, it's killing m
Electronics Forum | Thu May 18 22:00:38 EDT 2000 | Dean
...ahh....memory lane. 10 years ago I worked on a project for a customer who needed a low cost, high volume board for RFID tags for cows (yes, moo). These boards were 0.50 inch in diameter, 50 per panel, double sided SMT punch style fabs. 300,000 b
