Electronics Forum | Wed Sep 13 20:58:50 EDT 2000 | Dave F
If you don't know what you have, how the blank are we sposed to tell you? Try your local fab. CEM1 - Opaque tan CEM3 - Translucent FR2 - Opaque brown FR3 - Opaque cream FR4 - Translucent FR5 - Translucent FR6 - Opaque white G10 - Translucent G11 -
Electronics Forum | Wed Jun 21 20:41:26 EDT 2000 | Dave F
Gary: Regular FR-4 will HASS. HASS has largely fallen from favor, because: * Process is difficult to control, so not to strip the life from components * Failures under HASS have nothing to do in use failures. If you insist on continuing with this,
Electronics Forum | Mon Apr 29 04:33:05 EDT 2002 | ianchan
You can try using the brand-solvent "Genesolv 2004" in conjunction with a degreaser machine(source for own machine type?). this all helps to clean off the NC flux. we used it all integrated together, to clean a satellite modular card. reason we ha
Electronics Forum | Fri May 07 20:08:39 EDT 2004 | Ken
...um also, don't forget that ther are planarity issues associated with BGA devices AND bow-and-twist issues with PCB materials. An example I have one BGA device that has a ball planarity of 7 mils!!! Ant that's the OEM specification! THis will re
Electronics Forum | Fri Jun 06 06:11:18 EDT 2014 | paulg
I have a large monoblock ceramic filter on a PTFE based pcb material. The filter has a metal casing soldered onto the ceramic filter. I am concerned that if the heating rate is to rapid, then thermal shock / differential expansion could cause the fil
Electronics Forum | Fri Jan 24 01:46:29 EST 2020 | sara_pcb
I am designing a Single Board Transmitter in the S Band 2-4 Ghz. The design contains DCDC converter , LDO, Synthesizer, FPGA, DAC & RF power amplifier. Which is the nest PCB material to choose ?. Shall i go for I-TERA+HR370 hybrid combination to d
Electronics Forum | Wed Apr 06 15:41:53 EDT 2005 | Dirty Boards
Any help locating a machine to remove foreign materials from bare pcb's would be appreciated,
Electronics Forum | Wed Nov 13 21:16:28 EST 2002 | Vinny
Hi All, I am producing a lot of high cost PCBA where the pCB material is the `ROGER' material. Due to some of the high components and handling we get pad lifted issues sometimes and as of now are unable to do repairs on these. Please help if anybo
Electronics Forum | Wed Aug 01 11:11:38 EDT 2001 | JohnW
hi Folk's, Ok so I'm looking for some thoughts on Conductive Epoxy's. I'm trying to replace a material that i can place between a QFP and the PCB to transfer heat from the component to the PCB. The material has to be able to be injected thro' a hole
Electronics Forum | Tue Nov 28 10:48:29 EST 2017 | georgetruitt
Some things to look into are the component finish, material and composition of the solder, design of the smt stencil, reflow profile or process atmosphere (N2 or air)also contribute to the solder result. The influence of the PCB itself should be co
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