Electronics Forum | Tue Sep 21 09:33:30 EDT 1999 | Scott Davies
| | | My stencil thickness is 6 mil and we got qfp's with fine pitch. | | | how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? | | | | | | thanks | | | | | We use 6 mil lasercut stencils w
Electronics Forum | Wed Nov 18 18:10:16 EST 1998 | fraser
| | | | | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | | | | | | | Fraser- | | | | | | | | | | We use polyimide stencils with great success for our prototype boards.
Electronics Forum | Tue Jul 13 19:00:29 EDT 1999 | JohnW
| Hi All, | Does any one experienced the solder on gold finger after | reflow. Its about 5 to 8 mils diameter . | We'd clean the entire screen printer, mounter & reflow as well, | but doesn't help much. | | Mr Kong..... Solder on gold is a age old
Electronics Forum | Wed Jul 14 10:58:25 EDT 1999 | Upinder Singh
| | Hi All, | | Does any one experienced the solder on gold finger after | | reflow. Its about 5 to 8 mils diameter . | | We'd clean the entire screen printer, mounter & reflow as well, | | but doesn't help much. | | | | | Mr Kong..... | | Solder
Electronics Forum | Wed Nov 05 19:40:25 EST 2003 | Mike Konrad
Here's the official press release... New York, NY (November 5, 2003) -- KPS Special Situations Fund II announced today that it has acquired the stock and related assets of Speedline Technologies, Inc. from Cookson Group, plc for a total consideratio
Electronics Forum | Wed Mar 14 17:52:49 EST 2001 | davef
6 Work Life Test 6.1 Obtain a stencil with 15 to 20 rows of a series of 0.025 by 0.050 inch apertures spaced 0.050, 0.040, 0.025, 0.015, 0.010, 0.010, 0.025, 0.040, 0.050 inches apart. See Appendix 1. Source of supply: Metal Etching Technology.
Electronics Forum | Mon Mar 03 14:09:59 EST 2003 | Bill Schreiber
Hello Alwil, It appears that some of the other respondents are recommending that the waste stream be discharged to drain, if possible. Keep in mind, the chemistry used is not the only factor to determine legal drain disposal. If you are cleaning s
Electronics Forum | Wed Sep 22 21:12:16 EDT 1999 | se
| | | | My stencil thickness is 6 mil and we got qfp's with fine pitch. | | | | how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? | | | | | | | | thanks | | | | | | | We use 6 mil lasercu
Electronics Forum | Wed Dec 08 11:26:04 EST 2010 | davef
3 Printer Area Conditions * As stated earlier, heat and humidity are damaging to solder paste. Ideally, the printing area should be maintained at 40% - 50% relative humidity and 72°- 80°F (22-26°C). In addition, no air (cool or warm) should blow dire
Electronics Forum | Thu Apr 29 16:58:00 EDT 2004 | pjc
You should be able to get a one-print Mylar frame for the SMTech 90 machine from SigmaPrint, http://www.sigmaprint.co.uk Yes, with vision you store images of two features such as solder lands or fidicial marks from opposite corners of the board. With
