Electronics Forum | Mon Nov 08 11:00:53 EST 2004 | davef
It's possible your supplier has not thought through the results of their conversion to lead-free throughly. We'd expect something like: Reflow Parameters||Pb Assy||Pb Free Peak Temp.||235�C �5�C||255�C �5�C Time Within 5�C Peak Temp.||20 to 40 sec.|
Electronics Forum | Thu Oct 21 16:08:16 EDT 2004 | Dzyna Kid
Does anyone know of any resources I could investigate to make a small circuit that would consist of a transmitter, receiver, and a motor. I want to be able to press a button on a remote control and that would make the motor turn on, then I want to b
Electronics Forum | Wed Nov 03 08:51:54 EST 2004 | Chunks
This is easy! More zones means bigger process window and more thru-put depending on board size. More zones is always a good thing unless you're stapped for floor space. Just remember - the bigger the oven, the more it gets blammed for process prob
Electronics Forum | Fri Oct 29 09:08:21 EDT 2004 | davef
Electrochemical migration under conformal coating: That's possible. Very few conformal coatings are water resistant. So, if you have ionic material on your board, standback. Uncured material under several IC: Materials like yours need moisture fro
Electronics Forum | Tue Nov 02 08:01:13 EST 2004 | mattkehoe
Isn't that a good reason to use more paste? With just the paste from the balls, do you really get as good a solder joint as with a standard amount of solder paste added? What about voids? Do they go away by not using paste? I am talking about initial
Electronics Forum | Mon Nov 08 15:14:46 EST 2004 | russ
In addition to type of paste, it is also dependant on the enviroment conditions. When you say open jar are you implying that the jar is left open all day and then at the end of shift it is closed back up? Jars should only bve open for about 30 secs
Electronics Forum | Mon Nov 08 15:10:52 EST 2004 | russ
We usually get some mask material from our board house. It cures with heat so it works really well in our applications. Be wary of the "overcoat pens" they don't seem to hold up under heat and thre solder will flow right underneath it during BGA a
Electronics Forum | Wed Nov 17 08:13:41 EST 2004 | grange GAA
We are manufacturing an NPI board for a Customer and they want us to wash the board using a Saponifier wash. However, one of the SMT parts cannot be placed through a wash process. Has anyone ever had to encapsulate a component to prevent water da
Electronics Forum | Wed Dec 01 08:19:21 EST 2004 | MrSMT
Good job to do. The MyData format in pratics is a combined data from 3 different file's, the ".PCB" the ".PNL" and the ".CMP". All this file are linked with data, and all the programs are include, as a big back up. The only way to convert data is to
Electronics Forum | Tue Nov 30 08:47:02 EST 2004 | Tarheel
What is anyone using to clean Siemens ceramic nozzles. Siemens recommends a 20% ethanoic solution or a 20% acidic solution but they can't tell me anyone who manufactures this type of cleaning solution. I was using alcohol but was told not to because
