Electronics Forum | Wed Feb 21 16:14:44 EST 2001 | billschreiber
120 degrees F (49 degrees C.), check the fine-pitch apertures for shape distortion (stainless steel has a very poor memory, once it expands, it doesn�t always contract back to the same position). Check for dings and dents. A good stencil cleaning pr
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 | Tue Dec 01 14:30:48 EST 1998 | John
| | | | | | | All y'll: I could use your input on determining when to skim dross from a wave solder pot. | | | | | | | | | | | | | | On one hand, dross protects the surface of the solder from oxidation. On the other hand too much dross may affect
Electronics Forum | Thu Dec 31 01:09:18 EST 1998 | Kelvin Chow
Dear Micheal, SIR test is used to characterize fluxes by determining the degration of electrical insulation resistance of rigid printed wiring board specimens after exposure to the specified flux. (IPC TM-650 #2.6.3.3 http://www.ipc.org/html/tm2.6.h
Electronics Forum | Wed Feb 17 15:56:22 EST 1999 | Tuffty
| Dear Al, | Are these reworked, double-sided boards? | | If you attempt to clean side #2 of double-sided misprint in a "spray" type cleaner, millions of solder balls can be broadcast throughout the same chamber as the populated side #1. Or, if thi
Electronics Forum | Wed Jul 14 11:36:56 EDT 1999 | Jimmy Strain
| | | 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..
Electronics Forum | Tue Dec 01 12:44:15 EST 1998 | Earl Moon
| | | | | All y'll: I could use your input on determining when to skim dross from a wave solder pot. | | | | | | | | | | On one hand, dross protects the surface of the solder from oxidation. On the other hand too much dross may affect solder joint
Electronics Forum | Fri Jun 04 10:02:06 EDT 1999 | Chrys Shea
| | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VIA hole
Electronics Forum | Fri Jun 04 17:10:59 EDT 1999 | C.K.
| | | I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | | | | | We've been getting a rash of defects that we call in this company, "insufficient solder in VI
