Electronics Forum | Sun Nov 10 16:07:31 EST 2013 | davef
First, require use of the IPC-7351B Standard as the sole basis for laying-out pads on circuit boards. Second, if someone wants to use a pad design that either: * Wasn't covered in IPC-7351B ... OR * Was for a component that was in the standard but
Electronics Forum | Tue Jul 01 21:40:04 EDT 2008 | davef
Vapor degreasing systems * Thermal Equipment [Baron-Blakeslee]; Torrance, CA; thermalequipment.com * Exselect Engineering; Concord, ON CAN; exselect.com * Branson Ultrasonics; Danbury, CT; bransoncleaning.com * Greco Brothers; Providence, RI; grecob
Electronics Forum | Thu May 10 16:17:59 EDT 2001 | davef
I am unaware of any industry standard for specifying apertures for SM stencils. I am aware of IPC-7525, Stencil Design Guidelines. You can obtain it from IPC [http://www.ipc.org]. Further, it seems like there is an article on stencil design ever
Electronics Forum | Fri May 14 11:17:42 EDT 2004 | Ashok Dhawan
I am having coating adhesion problem with flex circuits. The cover plate material is KAPTON or Poly imide. The conformal coating material used is humiseal 2A64. The boards are cleaned, measuring less than 4 microgram Nacl per sq in. against acceptabl
Electronics Forum | Tue Dec 17 09:48:44 EST 2002 | russ
Temps are related to the components/PCBs being soldered. I am not aware of any Industry standard. If you are soldering flex circuits, .020" boards etc.. We use 500 deg tips a little thicker PCB/lead we go to 600, and so on. We never exceed 800 in a
Electronics Forum | Mon Oct 25 17:55:47 EDT 2004 | Mike
Circuit Science, Inc. Plymouth, MN Mike Dupont / Sale Mgr. www.circuitscience.com miked@circuitscience.com Please send me an email and we will take a look at your pcb. We have been in the PCB industry for over 30 years. 2 layer boards - 18 lay
Electronics Forum | Thu Feb 05 18:16:37 EST 2009 | adamcrum
Can somebody help me to understand what standards are in place for deinozed water for cleaning circuit boards. I know they are supposed to be in acordance with J-STD-001D, but what does that entail? All I can find on the internet is that J-STD-001D a
Electronics Forum | Tue Jul 11 10:10:55 EDT 2000 | John Thorup
Low static Kapton dots are available from Shercon (www.shercon.com) and through many distributors like com-kyl. Purpose specific dots are available from Circuit Technology Center as TD-250 Tape Dots. (www.circuittechcenter.com). Consider also The Pr
Electronics Forum | Tue Sep 14 13:49:14 EDT 1999 | Earl Moon
| I am looking to find a formula to calculate the resistance of circuit traces based on width | The old MIL-STD-275 became IPC-STD-275 became IPC-2221/2222. Anyway, they had/have simple graphic representations converting AWG standards into equivalen
Electronics Forum | Thu Jul 15 12:07:36 EDT 1999 | Mark
| What are some suggested standards/speced requirements and procedures for removal/addition of missing balls on laminate and ceramic based bga packages and quality requirements for same. | There are a number of methods available. 4 of them are discu
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