Electronics Forum: like (Page 436 of 1217)

Need Help for EMI Shielding process

Electronics Forum | Thu Nov 10 23:50:34 EST 2005 | pyramus

Hi everybody! I would like to ask some advice which kind of EMI shielding process is easy to use, economical and at the same time efficient. I've been doing research for different kinds of shielding process to be used in our product. Can anybody gi

Pb % contaminant allowed in Pb/Free Solder

Electronics Forum | Sat Nov 12 07:25:26 EST 2005 | GS

In other words it should mean that Lead Free Soldering Process (this SACs era, and not for istance classic Lead Free Sn/In used since many years ago) is still a "Baby Technology" and so we need experience and feedback from the field before to issue

ROHS Compliance Build & Design

Electronics Forum | Fri Nov 18 08:19:41 EST 2005 | Rob

Thanks for that. It's definitely a tricky one, with lots of yet to be confirmed exemptions. It's particularly confusing with this type of product as it is said to be up for exemption due to lead in the glass of the erase window. However, does this

Engine control

Electronics Forum | Fri Dec 02 12:34:53 EST 2005 | Kokofiko

Hello, 1st of all thank you. 2. While I was reducing the rottor speed, I've noticed that the engine don't stop immidietly when I disconnect the voltage source. That makes me problem how to control what is the rottor location-How can I fix it up? 3. I

Lead free components in 62/36/2 paste prob.

Electronics Forum | Tue Nov 22 08:11:36 EST 2005 | davef

It sounds like you're exhausing your flux activity on this component proir to reflow. We'd start with the reflow recipe suggested by your paste supplier. If the component lead doesn't flow well try: * Raising the peak temperature in 5*C increments.

Lead free components in 62/36/2 paste prob.

Electronics Forum | Wed Nov 23 00:22:30 EST 2005 | mskler

Thanx for your only reply!! I already increased temprature now its actualy on board is 240*c. I would like to discuss one more thing if I go for lead free solder paste & using some components wich are not lead free then what will be the result. Has a

Jars versus Cartridges

Electronics Forum | Wed Nov 23 12:34:35 EST 2005 | PWH

Cartridges/dispenser systems supply even paste volume to the screen. This will help provide the most consistent squeegee roll as well as paste deposition on PCB. Messier, though = much printer maintenance. Some people also like to use a caulking g

Reflow

Electronics Forum | Sun Dec 04 20:03:37 EST 2005 | stepheniii

Not sure, but I would guess we used less than 100, 500 gram jars last year. Next year probably double or triple that. I think for the first 6 months of operation or so (before I started) they were pretty much using only samples. Nowhere near what a

SMD weights

Electronics Forum | Tue Dec 06 21:48:26 EST 2005 | davef

We thought Bob Willis posted something like that a few years ago, but can't find it [real quick. Maybe someone more patient can.] Anyway, a PLCC68 weighs 4.67gm. On various PLCC size dropping or not: * upto 52 will stay put * 84 will drop

Gold Surface Finish on PCB's

Electronics Forum | Thu Dec 08 22:41:44 EST 2005 | davef

Mike: You're correct, but in better shops there are guys with little black books in their back pocket. They know how to contol their variables and give you a good product. I worked at this plant where we cooked dirt. It glowed orange-red and flow


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