Electronics Forum: l and strength (Page 1 of 10)

Shear strength and Copper/Tin Intermetalic layer

Electronics Forum | Mon Jul 06 20:32:34 EDT 1998 | Chiakl

Hi there, I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? Thank in advandce. rgs, chiakl

Re: Shear strength and Copper/Tin Intermetalic layer

Electronics Forum | Thu Jul 09 21:04:50 EDT 1998 | Dave F

| Hi there, | I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? | | Thank in advandce. | rgs, | chiakl Chiakl

Weak joint strength and black residue

Electronics Forum | Fri Jun 08 18:27:03 EDT 2007 | jmelson

This is probably an inner plated layer of the component that did not bond well. It may be a component that either has the wrong surface finish for lead-free or can't handle the temperatures. Many times I have seen a similar-looking layer when the l

Weak joint strength and black residue

Electronics Forum | Fri Jun 08 17:22:51 EDT 2007 | naynayno

We have been producing an IMS assembly with SMT dpak's for some time. However, we recently encountered a new problem by chance - the parts can be flicked off with a finger nail. I state by chance because the solder joints are wetted and shiny with

MY15 and MY19

Electronics Forum | Mon Apr 19 08:58:09 EDT 2004 | pjc

MY15: 4080mm (160") L x 2000mm (78") D x 1450mm (57") H, 2500Kg (5500lbs) Wght. MY19: 4800 (188") L D & H dims same, 2800kg (6160lbs) Wght

JUKI KE2060R and KE2060L

Electronics Forum | Fri Sep 18 13:59:05 EDT 2009 | cyber_wolf

Can anyone tell me the difference between these two machines ?

JUKI KE2060R and KE2060L

Electronics Forum | Mon Sep 21 12:51:12 EDT 2009 | cyber_wolf

Thank you.

Pick and Place Machine

Electronics Forum | Tue Aug 16 23:23:03 EDT 2011 | ckyien

Hi, my company is looking for SMT lines. Currently our target for pick and place machine is on Yamaha YS12P/YS12F and Juki 2080L/3020L. Kindly please share your comments of pros and cons of these machines. Also please recommend other brands and mod

BGA assembly and inspection

Electronics Forum | Thu Sep 07 03:57:39 EDT 2000 | Steven Cheung

Does anyone know of a freely-available document which discusses the main considerations of BGA assembly and inspection (x-ray?). l need to know about pad sizes and inspection standards and when to underfill and when not to etc.. l am looking at ass

SMTECH pro's and con's

Electronics Forum | Sat Sep 29 10:10:05 EDT 2001 | foxy

I used to build the SMTech 100 range of machines before the company closed, and i also have dealings with them still. The 100is is a very capable machine and will go on forever with a little T.L.C. foxy

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