Electronics Forum: general (Page 9 of 155)

SMT

Electronics Forum | Tue Aug 27 01:11:31 EDT 2002 | zolasteven

Hi Dave, Thanks for your input. By the way where I can find on-line reference on Review IPC-7530 (Guidelines for Profiling) Generally, what is the recommended frequency for conducting temperature profile? Thanks & rgds, Steven

Wave soldering SMT component spacing

Electronics Forum | Wed Aug 28 19:35:13 EDT 2002 | ppwlee

Hi, Does anyone have guidelines on minimum SMT component spacing for bottom sided wave soldering? I am looking for general rule of thumb in wave soldering bottom side SOTs, 0805 & 0603s. How about minimum through-hole lead to pad distance? Peter

Wave soldering SMT component spacing

Electronics Forum | Wed Aug 28 19:36:29 EDT 2002 | ppwlee

Hi, Does anyone have guidelines on minimum SMT component spacing for bottom sided wave soldering? I am looking for general rule of thumb in wave soldering bottom side SOTs, 0805 & 0603s. How about minimum through-hole lead to pad distance? Peter

Handling PCB assy's

Electronics Forum | Wed Oct 30 15:20:30 EST 2002 | Dan

I am wondering what the general concensus is for handling PCB's. Do bare hands pose a problem for PCB assy's? Should operators who handle boards wear gloves? Thanks for your input.

Contract manufactuer in China

Electronics Forum | Tue Apr 29 11:45:35 EDT 2003 | gswable

Hi, Should the industry in general warn the customers if the products were indeed assembled during the period from the time when the thing originated and until it is cured ? Thanks

Vacuum Sealer

Electronics Forum | Tue Feb 04 10:18:15 EST 2003 | smsinc

Check out GPD(General Production Devices), they have a tabletop Nitrogen bagger/sealer. 1-800-pick-gpd.

Number of times reworking

Electronics Forum | Tue May 27 19:21:50 EDT 2003 | bayanbaru

Can I then say that in general boards are not encourage to rework more than 3 times since the boards will be subjected to Top and Bottom reflow? What is 55110?

15.7 mil QFP

Electronics Forum | Thu May 29 16:14:34 EDT 2003 | steves

What is the general feeling in the industry on the use of 15.7 mil QFP's? Are most people shying away from them in favor of BGA or do most people consider 15.7 mil to be "standard" technology these days? What special considerations are involved? Ste

Transistors on CS400E locator machine

Electronics Forum | Mon Jun 16 16:38:44 EDT 2003 | fujispares

I generally get the operators to chop the middle leg manually and crop the 2 outer legs - hope this helps?

Package Dimensions

Electronics Forum | Fri Jun 27 10:04:55 EDT 2003 | Charlie Finke

Does anyone know of a good web site that lists general package dimensions for various SMT device sizes, like 1206, etc.?


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