Electronics Forum: mold and compound

Are all tape and reels used in SMT required to be static safe?

Electronics Forum | Sat Feb 02 08:55:55 EST 2002 | davef

I'd don't believe that the reels need to be ESD protective material. The carrier and cover tape have resistivity and materials specifications. Start with EIA-481. In past threads on SMTnet, we have discussed problems in picking components that wer

ESD Smocks and chairs

Electronics Forum | Tue Jun 05 20:36:01 EDT 2007 | rfrog

LarryP, ESD smocks in combination with a wrist strap provide a path to ground for any charge potential. An operator wearing a smock while grounded will provide a path to ground for the chair. With an ESD chair you can have antistatic or static

Skewed and popped components

Electronics Forum | Wed Sep 24 08:34:57 EDT 2003 | stefwitt

Even when you run a board several times, the machine may not make the same travel path every time. This in itself does not create a problem, but the vacuum on the nozzles could be different, dependent on the configuration of components on the heads.

Desiccants and pcb finish degradation?

Electronics Forum | Tue May 15 21:57:06 EDT 2001 | davef

Welcome!!! Where the hay ya been??? Sorry bud, were lining-up with your fab [it hurts me to say that, but when yer  ] We used to dry pack with desiccants, also. Its probably an old MIL-STD-2073-1C requirement [er something like that]. We qui

Flipchip sticking to tape and reel covers

Electronics Forum | Sat Feb 19 09:31:30 EST 2005 | davef

Potential causes are: * Static charge [get a deionizing fan] * Adhesive on the inside of the cover tape [fix your supplier]

Flipchip sticking to tape and reel covers

Electronics Forum | Mon Feb 21 03:56:34 EST 2005 | abhirami

Agree with Davef. Smaller the chip, more the static charge. I used to see this even with normal chips. Get an ionizer blow. It should solve your problem. May be switch to antistatic tape if affordable.Regards. GV

Re: Solderability of BGA and PCB

Electronics Forum | Mon Nov 27 19:32:02 EST 2000 | Michael Parker

Prof. Whoopee - amazing facts that you find on your 3-D BB, it has completely confounded my comrade, Chumley. Plainly spoken that around the SF Bay Area a.k.a. Silicon Valley(ever hear of the famous SF Fog?)during the winter months, near the coast a

SOD323 and SC90 bounceing parts in final PNP stages.

Electronics Forum | Mon Mar 05 17:54:07 EST 2012 | swag

Three ideas for you: 1) Make sure nozzle tips are clean. 2) Check coplanarity of leads to bottom of body. If leads are above body, it could be the are not contacting paste well. 3) Investigate static charge in the parts caused by the feeder or


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