Electronics Forum | Tue Mar 27 06:50:25 EDT 2007 | Ayelet
Hi, Are you familiar with any spec that defines choosing product families for the various qualification (DVT, HALT, EMC, Environmental qualification etc). Meaning: if I have many products, all manufactured on the same production line, but have, of
Electronics Forum | Sun Apr 08 20:42:21 EDT 2007 | Tom
1. Resistor is used to provide ground return for diodes. Diodes have a capacitance and with them floating a charge can build up. 2. They each perform different functions. The 100N is used for HF filtering. The 1uf is used for LF filtering and
Electronics Forum | Tue Mar 27 13:49:18 EDT 2007 | pima
Yea. I think that http://www.topline.tv/SMDnomen.pdf is even better. But the problem is that these two files was done in 1998 and from that time 0402 its not a prototype anymore its a standard. I would like to have this kind of document but more curr
Electronics Forum | Wed Mar 28 08:47:36 EDT 2007 | pjc
Ideal is 10 to 15 minutes. With the p&p gear you've got, feeders, feeders and more feeders are the answer to fast changeovers. Your goal should be to have a nearly complete setup for the next board all loaded on feeders, so you are just removing old
Electronics Forum | Thu Mar 29 10:29:13 EDT 2007 | Scotceltic
A feeder verification tool like Bartector will stop any need for time wasted manually verifying the correct part to the correct feeder. Also, there are plenty of pieces of SMT placement equipment out there that offer offline feeder pallet tables that
Electronics Forum | Fri Mar 30 10:35:44 EDT 2007 | oldsmtdude
Way to many variables here. I could have 3 or 4 setups on a HSP/GSM line if the boards are simple. Preprint boards to change the printer while still running... Thus a minute or two. Yet changing over a full GSM and 4 carriages on the HSP takes a ton
Electronics Forum | Fri Apr 06 22:47:02 EDT 2007 | oldsmtdude
But a race team can't compete if the car or driver sucks. Several times I've seen managers spend way to much effort on changeover when everyone operating the machines knows there's more waste in lack of PM, bad programming and sloppy optimization.
Electronics Forum | Wed Mar 28 08:45:03 EDT 2007 | pjc
I have seen point-to-point soldering iron tip robots in action at a number of factories. The problem is repeatability at delivering good solder joints. Consider a small selective solder machine, the nozzle type: www.ace-protech.com www.air-vac-eng.c
Electronics Forum | Fri Apr 13 10:13:31 EDT 2007 | stockley
Lozie We built our own soldering robot using pace soldering irons but we have considered a Apollo Seiko bot for a different facility. I'm curious to know what kind of life you get out of those Apollo Seiko irons with lead-free solder. How many solde
Electronics Forum | Wed Mar 28 13:14:38 EDT 2007 | amelara98
I am having problems with a product we receive from our overseas plant, where there is excessive "dullness" of solder joints/metal surfaces after running a board on a pallet through wave solder. Seems to be an issue of the pallet, as the solder appe
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