Electronics Forum: pass (Page 28 of 142)

Re: Troubles with parts recognition

Electronics Forum | Wed Feb 23 11:12:47 EST 2000 | TMV

This note is in response to your question about not being able to recognize a component that is running on a 4796 but has problems on a 4791. The 4791 and 4796 used two different recognition systems and the lighting calibration will be not be the s

Re: Double sided assembly

Electronics Forum | Tue Jan 02 14:50:37 EST 2001 | fmonette

Dear Vicki, If you decide to use high temp paste, I suggest that you verify the rating of the components, especially for moisture-sensitive devices which are normally qualified at peak reflow temperatures of 220-235C. The specified floor life will

Re: Rambus

Electronics Forum | Mon May 22 16:50:50 EDT 2000 | Kathy Palumbo

Mike, Is that greater than 80% yeilds, or less than? Here are the answers to your questions: Is you placement guranteed good? YES What x-ray have you used? Nicolet Are your fab.'s known good? YES Could you de-solder Samsung and replace with ano

Re: Troubles with parts recognition

Electronics Forum | Wed Feb 23 11:12:47 EST 2000 | TMV

This note is in response to your question about not being able to recognize a component that is running on a 4796 but has problems on a 4791. The 4791 and 4796 used two different recognition systems and the lighting calibration will be not be the s

2-sided BGA

Electronics Forum | Tue Jan 30 21:13:26 EST 2001 | davef

Two options: 1 Glue 2 Use a dedicated work holder with 'pockets' milled out to accommodate the components on the first side of the board after reflow. Some prefer a pallet that runs all the way through their process. So, these pallets: * Feature

0402 CHIP WITH GLUE PRINTING PROCESS

Electronics Forum | Mon Jun 18 10:14:30 EDT 2001 | surachai

HI ALL; I WOULD LIKE TO KNOW THAT ANYBODY CAN RUN GLUE PRINTING PROCESS WITH 0402 CHIP AND PASS THEM TO WAVE SOLDERING PROCESS ,PLEASE GIVE ME THE INFORMATION ABOUT THEM . 1)HOW WIDE OF APERTURE DO YOU OPEN ON YOUR STENCIL? 2)HOW MANY YIELD OF THIS P

Re: Double sided smt

Electronics Forum | Mon Nov 01 22:16:04 EST 1999 | Dean

Without a detailed description of the suspect parts It is difficult to pin-point the exact solution to your process problem. However, whenever possible avoid non-value added additions to your current process. Here is the reality of the situation:

Re: Double sided reflow in one pass?

Electronics Forum | Wed Aug 18 08:38:46 EDT 1999 | Jason Gregory

Is there process by which one can do a double sided reflow (SMT on both sides) in one pass through the oven? Paul, Here's a way it might be done. Screen your bottom side with paste (if only passives, 0603-1206 & sot 23's), dispense glue for sam

Re: Wavesolder conveyors

Electronics Forum | Mon Jun 28 12:51:08 EDT 1999 | Scott Cook

Anyone having any conveyor rail shaking on Electrovert wavesolder machine model "Electra"? The conveyor shakes more with a pallet passing through the machine, particularly when the 20" pallet is passing from spray fluxer to the first pre-heater. He

intro to 2 sided assembly

Electronics Forum | Tue Dec 04 13:23:05 EST 2001 | fmonette

Hi Steve, It sounds like your product will have many moisture-sensitive devices on both sides. You should be aware of the additional controls that are required to insure the reliability of these components in a double-side reflow application. The


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