Electronics Forum: 2000 (Page 139 of 505)

Re: SMT assembly on Punch/return boards

Electronics Forum | Fri May 19 10:57:08 EDT 2000 | Travis Slaughter

Oops looks like all those browser failures sent it through just didn�t let me know sorry everyone.

Cost of labeling PCB's

Electronics Forum | Wed May 17 16:02:53 EDT 2000 | Mark J. Braska

Is there any data on the total cost of labeling PC boards. Included in this cost would be the labels, ribbons,printers & maintenance,software, and engineering & operator expenses(fully burdened). I am searching for an independant analysis of the co

PCB thickness

Electronics Forum | Wed May 17 11:00:00 EDT 2000 | emmanuel

Has somebody yet process pcb (FR4) with a thickness of 0.8 mm ? Thank you for all kind of responses.

Re: PCB thickness

Electronics Forum | Wed May 17 11:56:00 EDT 2000 | John Thorup

We have one panel of 50 small boards that is 0.035" (0.89mm). Other than a dedicated fixture to support it during printing and placement we don't do anything differently. John Thorup

Re: PCB thickness

Electronics Forum | Wed May 17 12:27:28 EDT 2000 | JAX

emmanuel, John's right, as long as there is support, nothing changes. Depending on the size of the board fixtures might be a better option over support pins. Unless the pins jump out of the machine and follow it into the reflow oven, You never know!!

I need the PCB V-Cut dimention definition

Electronics Forum | Wed May 17 03:03:57 EDT 2000 | Roni Haviv

Hi, Can anyone give me it's definition of PCB separation V-cut (dimensions): 1. V-cut Angle. 2. Depth of V-cut penetration into the PCB. Thanks Roni

Re: I need the PCB V-Cut dimention definition

Electronics Forum | Wed May 17 09:37:32 EDT 2000 | John Thorup

Hi Roni Point yourself toward www.accusystemscorp.com and you'll get what you need. There is much info in this forum's archive as well. Happy hunting John Thorup

Misplaced QFP240 component

Electronics Forum | Wed May 17 03:00:45 EDT 2000 | Avichai Ramot

I have shifts in the placement of qfp240 components. I have this problem with al my IC machines: Fuji-Ip2,Ip3 ,siemens F-4.

Re: Misplaced QFP240 component

Electronics Forum | Wed May 17 11:39:31 EDT 2000 | Bob P

If the shift is happening on different machines,it sounds to me like your pcba's cad data is incorrect or the board and/or fiducials are not consistent. Good Luck Bob

Re: Misplaced QFP240 component

Electronics Forum | Fri May 19 16:47:46 EDT 2000 | Socheat Khun

Hi Ramot; I have some sugestion for you, you may want to look at part data, like lead width, pitch , length. Good Luck socheatk


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