Electronics Forum: 2000 (Page 456 of 506)

Re: Passive SMD components codification

Electronics Forum | Thu Feb 17 22:30:09 EST 2000 | Dave F

Alberto: There's no rules, but it works sorta like this: RESISTORS Usually marked in ohms using a standard code: First two numbers is the value Third number is the multiplier 102 = 1.0 x 10� ohm = 1000 ohm = 1 kW CAPACITOR Usually not marked. When

Re: Farewell to fellow old-timers and up-and-comers alike

Electronics Forum | Thu Feb 17 10:38:46 EST 2000 | Keith Luke

Scott, We always regret to see a dedicated user leave the fold. Over the past few months we have made many changes to the site, and we believe, improved the quality of the forum experience for our users. During our recent site upgrade we respond

Re: Farewell to fellow old-timers and up-and-comers alike

Electronics Forum | Thu Feb 17 14:10:37 EST 2000 | C.K.

I'd have to agree with JAX here. This forum is intended to be a "Technical Bulletin / Newsgroup" and nothing else. Truthfully, these posts of the "old-timers" announcing their departures is getting..well.....OLD. I hate to see the Old-timers leave

Re: Cigerette Smoke Contamination of PCA's

Electronics Forum | Mon Feb 14 21:28:22 EST 2000 | Dave F

Tobacco smoke is made up of "sidestream smoke" from the burning tip of the cigarette and "mainstream smoke" from the filter or mouth end. Tobacco smoke contains thousands of different chemicals which are released into the air as particles and gases.

Apply glue with a stainless stell stencil

Electronics Forum | Sat Feb 12 10:33:31 EST 2000 | Francois Racine

First I'm a french people so excuse my bad english writing. I have a complete smt production line. First a screen printer DEK 240, a chip shooter PANASERT MVIIV, a multifonction machine MULTITRONIKS EP6000, a reflow oven at the end of the SMT line a

Gold contact cleaning machine

Electronics Forum | Thu Feb 10 13:54:22 EST 2000 | Kris W

Hi All, We are in the process of converting from RMA solder paste to no-clean process across the shop. This will allow me to carry my semi-aqueous cleaner out of the building and set it ablaze using the terpenes as the fire water. Then I can go ab

Re: Soldering on a Ground Plane

Electronics Forum | Thu Feb 10 22:31:11 EST 2000 | Dave F

CK: If you�ve done everything under the sun process-wise at the wave: different fluxes, more heat, less heat, more contact time, and less contact time; and are running out of ideas; let me table some thoughts. � "Don�t mess with Mother Nature."

Re: Soldering on a Ground Plane

Electronics Forum | Fri Feb 11 10:14:54 EST 2000 | C.K.

Dave, to answer your questions, point-by-point: � Just out of curiosity, how are second side, skippy components oriented on the board with respect to the wave? The SMD's are all oriented in the "correct" direction with respect to wave direction(i

Re: CPH

Electronics Forum | Thu Feb 10 15:26:57 EST 2000 | Dean

Simplify. FInd your botle-neck process (use a stop watch). You assume it is a P&P machine...(it could also be print or glue etc.) Your only concern is that bottle neck process and how many parts / hour that process can deliver. That is your gatin

Re: Poor solderability

Electronics Forum | Thu Feb 10 10:28:56 EST 2000 | Russ

Okay, Okay, here is the rest of the story! These boards were definitely plated, reworked to HASL, The component that is the most succeptable is a 160 pin QFP .5mm pitch. This component has nickel/iron lead frame. Significantly reduced apertures (1


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