Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
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 Mar 25 14:46:08 EDT 2020 | stephendo
What about designators? Using gerbers to program a pnp machine was always a last resort to be done only after much complaining and begging for proper CAD data. Back in the day I used UniCAM to program a mydata. After getting it figured out it was eas
Electronics Forum | Fri Mar 16 13:47:56 EDT 2007 | ck_the_flip
Another thing to look out for... Flex circuits, if not fixtured properly tend to move around and, well, "flex" during screen printing. At another place I worked, we fixtured the flex circuit on a SMT pallet on the corner tooling pins to "stretch"
Electronics Forum | Sun Oct 11 21:19:51 EDT 2009 | fulldrawmike
we have both flexjet and flexhead, we also have the new inline 7 head on some genesis dual beams we just put into operation. If you have a choice in flexjet heads take the inline 7. The flexjet 09 head is very labor intensive, stay away from them, e
Electronics Forum | Tue Jan 04 15:28:22 EST 2005 | davef
Look here: * Circuit Board Repair and Rework Guide [ http://www.circuittechctr.com/guides/guides.shtml ] * 7711/21A - Rework and Repair Guide [ http://webvision.ipc.org/scripts/mgrqispi.dll?APPNAME=IPCWEB&PRGNAME=TOCFRAME&ARGUMENTS=-N,-N,-A,-A,-N50 ]
Electronics Forum | Mon Apr 25 22:56:44 EDT 2005 | davef
rush316 First, no one stated that PBB and/or PCBE are in FR4. FR4 contain tetra-bromo-bisphenol A [TBBA]. Second, there are classes [and grades] of dielectric materials used in fabricating printed circuit boards. Grades, NEMA LI-1. From these gr
Electronics Forum | Wed Dec 20 04:43:36 EST 2006 | greg york
Any decent flux would volatise off with the heat of the wave unless absorbed into the solder mask. Test this by trying to clean in alcohol or common solvent aerosol, if it does not clean then it is probably Mineral Salts from solder mask fillers. Ano
Electronics Forum | Tue Aug 12 14:49:26 EDT 2008 | awegener
I'm attempting to pick and place a small rivet onto our PCB. The rivet should be attached via reflow solder. The rivet will be used to create a sandwich, holding together a frame and additional circuit board in a package. This part is intended onl
Electronics Forum | Wed Aug 07 16:49:15 EDT 2013 | hegemon
You mean you don't pull all of your thermocouples out of the ovens once a year and send them out for calibration? - lol Tough question. You have a calibrated datalogger. (I assume) You have an oven with preset zone temps, each zone controlled by a
Midwest Circuit Technology provides Carbide Router Bits and End Milling Cuters for use in PCB Depaneling equipment. We have over 35 years of supplying tools and machining experience in drilling, Routing, Test Fixture manufacture.
114 Barrington Town Square
Aurora, USA
Phone: 13309956900
