Electronics Forum | Mon Mar 26 11:20:39 EST 2001 | dblsixes
The pads are 0.070 x 0.012 ... as spec'ed, and as measured. The pad extends approximately 0.017 behind where the Class 3 fillet is required to be. (It used to be 0.037 on an older design that exhibited similar, but not as bad of heel fillets.)
Electronics Forum | Thu Sep 03 22:03:32 EDT 2020 | SMTA-64386139
Both conditions are acceptable for this bottom brazed flat pack package. The solder coverage must be within 0.070 inch of the lead/package interface per MIL-PRF-38535, paragraph A3.5.6.3.4.a. While that requirement could allow for a gold gap near t
Electronics Forum | Thu Feb 17 10:14:40 EST 2000 | Jim N
We bulid many boards with fine pitch on solder side and then wave. We use a wave fixture that is custom for each board. The fixture covers the SMT components and only exposes the PTH lead during the wave process. It requires about .070 to .100" clear
Electronics Forum | Wed Sep 13 12:50:44 EDT 2023 | kirill
Greetings, I would like to do a height calibration, because the laser of the machine seems to be out of control, I'll explain why: When I measure the height of a 0402 resistor, I get around -0.60 to -0.70, when I fix it on what the machines has measu
Electronics Forum | Thu Sep 14 06:18:00 EDT 2023 | deniseburton
Hello, mcdvoice It seems like your Juki RS-1R machine's laser height calibration may be off. When measuring a 0402 resistor, it consistently reports heights around -0.60 to -0.70, causing pickup issues during production. Manually adjusting it to -
Electronics Forum | Fri Apr 16 17:19:59 EDT 1999 | Dave F
| | Hi, | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .030"
Electronics Forum | Wed Jun 10 17:04:10 EDT 1998 | David Spilker
| We're running into problems with board damage (broken traces, solder shorts) due to pliers and other bizarre tools being used for depanelization. I need some sort of fixture for this. A delrin plate with a slot cut to the correct depth and width mi
Electronics Forum | Wed Dec 31 14:16:43 EST 2003 | kennethk
Dear Paul, My company carbide refurbishs these cutters for Sanyo/UIC chip-shooters as well as for Fuji CP machines. The trick is to add carbide and then precision grind to orginal specifications. I have done this for many customers, most recently Ce
Electronics Forum | Fri Jan 21 12:26:13 EST 2005 | Joel Lohr-Dataforth
We are attempting to increase utilization of our Pick and Place equipment (MY9) by transfering more components into the SMT area. Large gains could be had if we can successfully place a metal socket with a lipped pickup surface into a circuit board h
Electronics Forum | Thu Sep 19 11:14:45 EDT 2002 | Jim M.
We had lots of problems with bridging on 15.8mm pitch, QFP17-160 at the start.The board was .032 thick, double sided-six boards to a panel. Here is the problems (not neccessarily in the biggest to little but as i remember them) and solutions that he
