Electronics Forum | Fri Apr 08 09:33:32 EDT 2005 | Dave G
We put the following on our travelers: Finished Assembly Part # Date Started (@ Bottom SMT) Date Finished (@ Top SMT) SMT Inspection -- Just a checkbox Postwave Inspection -- Just a Checkbox Board Wash -- Just a Checkbox Solderpaste Date Code & Type
Electronics Forum | Sun Apr 03 00:16:56 EST 2005 | Haran
Can anyone advise how to determine the right hole diameter for a Press Fit connector's lead based on the lead compliant section?
Electronics Forum | Mon Apr 04 08:51:17 EDT 2005 | davef
Look here: * http://www.assemblymag.com/CDA/ArticleInformation/features/BNP__Features__Item/0,6493,140679,00.html * http://www.circuitree.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2133,136322,00.html
Electronics Forum | Mon Apr 04 08:55:05 EDT 2005 | jimih280
the pin manufacturer usually recommends the proper hole size. the hole diameter should be from .001" to .003" undersize depending on the design of the contact area on the pin.
Electronics Forum | Mon Apr 04 08:48:33 EDT 2005 | jimih280
that depends on clinch direction, length, and angle. .200" hole center to center is usually safe for all automatic insertion equipment.
Electronics Forum | Mon Apr 04 09:26:25 EDT 2005 | russ
Depends on a lot of things as suggested above but we solder land to land spacings of .02" (.5mm) with no shorting. Russ
Electronics Forum | Sun Apr 03 00:22:50 EST 2005 | Haran
We have received a board from our customer with one of the Transformer falling off.The component lead plating fell off but there is solder fillet at the PCB pad is good.
Electronics Forum | Sun Apr 03 00:34:56 EST 2005 | Andrew
Can anyone advise the best aperture opening and stencil thickness for Nexlev connector?We are seeing high reject for open solder.
Electronics Forum | Mon Apr 04 09:30:49 EDT 2005 | russ
Andrew, we need a lot more information to help. 1. what is the open caused from? bemt pins, non-wetting, board bowing, or no paste deposited. 2. What is your current stencil design? 3. What does this connector look like and what are the pins? Rus
Electronics Forum | Wed Apr 06 22:00:51 EDT 2005 | mrtom
I've delt with NexLev issues in the past. Contact me off line and I can share details. email= freemr_t@yahoo.com
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