Electronics Forum | Fri Jan 17 15:47:28 EST 2003 | davef
There is no documentation like you seek. The life of your part in storage is primarily a function of: * Quality of the part fabrication process. * Ingenuity and diligence you apply in protecting the parts from the environment. You need to: * Handle
Electronics Forum | Fri May 11 16:06:49 EDT 2001 | Charlie
How to solder one zero ohm 0805 resistor to a PCB after it is mounted in it's plastic. The Panasonic "Soft Beam" would do it if money were not a factor. Is there a similar type of soldering station out there that may just bolt to an existing conveyor
Electronics Forum | Thu Aug 04 19:00:25 EDT 2022 | SMTA-64386637
I am investigating the use of conductive epoxies to connect battery leads, Charging pins and wires inside small plastic housings. Soldering in these small spaces can create heat related defects in the plastics even when using low temp solders. Are
Electronics Forum | Mon Jan 10 11:08:39 EST 2005 | mrgman9999
We are having a problem with popcorning of a plastic BGA that has been under careful humidity control. We have had problems in the past and some have been related to too much trapped internal solvents from the die attach epoxy. We did a life time b
Electronics Forum | Thu May 01 12:28:56 EDT 2008 | petergog
what is the main concern about this reqirement? Why IPC-A-610c is revsised to this? IPC-A-610c said it is a defect.Solder touches the body of a plastic bodied component, eg SOICs and SOTs. But D version think it is acceptable. WHY? I thought "plasti
Electronics Forum | Thu Mar 22 17:31:08 EST 2001 | davef
Hold off on the sharp knife for little bit. [Yano, I get "queasy" when I see much of my blood, but other people�s blood doesn�t bother me much. Weird, eh?] [Oh bye-da-bye, I didn�t win the bar bet on "Ground Hog Day". I didn�t loose it either. T
Electronics Forum | Wed Mar 21 20:40:28 EST 2001 | dblsixes
We are building a monster ... Dimensions are 10" x 7" ... 12 layers ... A Logic Assembly with a Power Supply all rolled into one ... The Power Supply is in one section of the board, the logic in the other section ... The Power Supply obviously has a
Electronics Forum | Thu Mar 22 16:06:22 EST 2001 | dblsixes
Our next plan of attack is to dog-bone the solder aperature. By reducing the width of the solder paste at the heel, we hope to slow the flow up the leg of the pin while the temperature of the pad catches up. We have boards that were HASL ...
Electronics Forum | Thu Mar 22 08:54:06 EST 2001 | dblsixes
I'm not familiar with Laser Soldering. I don't believe it to be a problem with the QFP themselves, since the two plastic parts are from different vendors in the same package. We also are having similar problems with other plastic parts on other boa
Electronics Forum | Thu Mar 22 08:07:41 EST 2001 | CAL
Selective Laser Soldering? Beamworks and Speedline Electrovert Both demo'd units at APEX. I am partial to the Beamwork machine cause it was able to do BGAs. Are the QFPs acceptable? You mention cleaning the pads, Stencil aperture enlargement could t
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