Electronics Forum | Fri Aug 17 01:40:55 EDT 2001 | V.RAMANAND KINI
We are in the watch & clock Business. We have a Watch IC chip that has to be wirebonded using Ultrasonic aluminium wedge bonder. The wire dia is 1.25mil. The PCB is made of G10 Glass epoxy copper clad laminate. The copper thickness is 18 microns. The
Electronics Forum | Sun Mar 25 12:48:07 EST 2001 | jveloso7
I need to modify smt pcb which require numerous modifications. In stead of use multiple wires, of which would require multiple wires to the same spot. I would like to use molytabs. We used these in the microelectronic hybrids circuits and worked
Electronics Forum | Wed Jan 09 21:19:49 EST 2002 | davef
When I said "In this area, there is no difference between your experience in ceramic substrates and PTFE substrates." I was referring to the area we were discussing ... gold plating. I am sorry if you thought I ment than the wire bonding process wa
Electronics Forum | Mon Jan 07 20:37:15 EST 2002 | davef
For soldered areas, we like to keep gold thickness substantially below the maximum you propose. Search the fine SMTnet Archives for our discussions on the topic of acceptable levels of gold with solder connections. Let�s fix this �no one seems be s
Electronics Forum | Wed Mar 29 18:17:16 EST 2000 | David
Does anybody out there have experience building electronics assemblies with DCA (Direct Chip Attach - bare die onto PCB) and wire bonding? - What Die Bonder/Dispensing Machines are recommended? - What brand conductive epoxy were used to attach die?
Electronics Forum | Wed Jan 09 12:20:00 EST 2002 | mregalia
Thanks for cluing me into IPC-2221. Though the numbers they give seem to contradict what I have learned from people working with the materials. At least I now know where the guideline for a max of 30 microinches of gold for soldering comes from. But
Electronics Forum | Fri May 29 07:17:02 EDT 2015 | anirudh_thabjul
Hiee everyone, I am a Hardware Engineer and also a PCB designer. I am using a Microntroller which is in "CHIP PACKAGE". So in order to connect our microcontroller with my PCB, i am using "Wire bonding Technology". So, Can any one suggust 1. whi
Electronics Forum | Fri Sep 27 11:20:21 EDT 2002 | davef
Mar, The previous post makes the best point. Your finish spec depends on the COB process you plan to use. Is your process: * Gold wire bond * Aluminum wire bond * Flip chip * Er, watt
Electronics Forum | Tue Oct 24 22:36:29 EDT 2000 | DL
On the main page of Smtnet towards the end of the opening paragraph states the following...Your " research continues in determining the reliability of thick film hybrid microcircuits and similar technologies using low-temperature, co-fired ceramics.
Electronics Forum | Sun Apr 05 00:23:53 EDT 2020 | researchmfg
1. To protect the nickel and copper under gold plating from oxidization before soldering. Gold plating can extend the PCB self-life and improve the solderability for 2nd re-flow. 2. Provide a good bonding strength. For Chip on Board process that Gol
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