Electronics Forum: accelerated aging (Page 1 of 2)

Solderability of a metal

Electronics Forum | Tue Mar 04 09:12:35 EST 2008 | davef

Q1. What would you recommend for the best practice or comparison? A1. We'd go with dip & look. It's easy and cheap, requires no advanced degrees in measurology. Have you reviewed "J-STD-002B - Solderability Tests for Component Leads, Terminations, Lu

Solder Shelf Life

Electronics Forum | Tue Mar 20 09:03:18 EST 2001 | moseschee

Hi, I'm looking for research/study done on solder shelf life by using accelerated aging process ( steam age or dry air oven bake at 150C & etc ) Perhaps you could help to advise correlation of all this acceleration test to actual solder shelf life

PCB Test Board-stress test

Electronics Forum | Sat Aug 21 08:00:50 EDT 2004 | davef

First, we know of no conformal coating that will help your situation. Second, as you say, companies recognize that stress testing of shippable products is NOT good practice, because it strips life from the product. So, your product is more expensiv

Solderability of a metal

Electronics Forum | Mon Mar 03 23:24:06 EST 2008 | Mag10

I have a project to evaluate solderability of various metals or plated finish. I'd like to tap in to get some advise. The project is to evaluate solderability of various metals or plated finishes for RF shield application with reflow. Due to the hig

Non-wetting on 0402 chips capacitors

Electronics Forum | Wed May 09 15:15:52 EDT 2001 | caldon

Your process needs some refining. How long did it take to wet? How much force did it take to break the surface tension? What type of solder was in the solder pot? What type of flux was used? What was the pot temperature? Did you take a cap and p

Is there a medical rating and standards for PCB components

Electronics Forum | Wed Aug 07 08:49:35 EDT 2002 | davef

What do you want to be certified? So, do you have a specification control drawing for each component that defines your expected performance capabilities for use by your buyer in acquiring these parts? If there is a reason to fabricate parts to your

Non-wetting on 0402 chips capacitors

Electronics Forum | Thu May 10 09:57:22 EDT 2001 | zam_bri

Hi Cal/Dave F, Good news today. The problem went away when I received and ran with a brand new component today. But I'm sure with a robust profile, I should be able to compensate oxidations at some degrees, rite? ( taking into consideration the suc

Soldering to Immersion Tin surface finish

Electronics Forum | Mon May 14 17:14:07 EDT 2001 | davef

First, consider checking the fine SMTnet Archives. Look for threads on "white tin", in addition to "immersion tin". We�ve had a cuppla good ones of late. Merix [http://www.merix.com] gives a good comparison of different solderability preservatives

Substrate Au/Ni thickness

Electronics Forum | Thu Feb 15 19:41:38 EST 2001 | davef

What do you mean by "But after performing temperature cycle test, the former aging rate (from the shear strength ) seems faster than the latter."? Comments are: I can't recall having heard the term "precipitation hardness" [not that that means anyt

Re: No-Clean Paste Lab Test Evaluations

Electronics Forum | Sat Feb 14 19:35:51 EST 1998 | C. Lao

Mr Lao We have some specialist knowledge on this subject and offer both equipment and services for these tests. My first recommendation is that take coupons manufactured by your PC Fabricator and then samples at each manufacturing stage: Bare coupon

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