Electronics Forum: what is a good ppm? (Page 4 of 14)

Re: What is spec on stretch????

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"

MYDATA Myspeed software is total junk

Electronics Forum | Thu Jan 13 09:00:42 EST 2005 | fasst1

Grant, Again, just my .02 worth. I would have to agree with Greg as well. Two Flex machines from the same vendor will give you much better line balancing, and I think better overall capability than adding a different type of 'animal' chip shooter

MYDATA Myspeed software is total junk

Electronics Forum | Thu Jan 13 10:09:45 EST 2005 | rlackey

Hi Fasst1, Have Assemblion/Philips actually building machines for 20 years, or were they badged machines? (I'm not asking to be funny, I'm asking as I don't know) I've build product on Topaz's, Emeralds & Comets, and they have been good machines, b

ENiG or IAg? Which is better?

Electronics Forum | Thu Mar 06 11:48:09 EST 2008 | muse95

Black pad with IAg??? Tarnish is NOT black pad. Tarnish is usually just some silver sulfide on the surface and can also usually be soldered through, by using a little additional, or slightly more agressive, flux, and still make a good quality solder

Re: all powerfull UP78..or is it..?

Electronics Forum | Fri Apr 30 11:03:27 EDT 1999 | Wade Oberle

| | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | My question's are really : | | how is the

IP1 Relay PCB, where is it???

Electronics Forum | Wed Dec 06 11:16:06 EST 2006 | Todd

Ok, an update... I finally found my 24Vdc. I was trying to use a screw and/or outside of the connector for ground. It was necessary to use the ground IN the connector pins. I believe it was the top/right and 3 o'clock pins that toggled with the 24Vdc

Re: What is spec on stretch????

Electronics Forum | Mon Apr 19 10:14:12 EDT 1999 | Justin Medernach

| | | 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 .0

ENiG or IAg? Which is better?

Electronics Forum | Fri Mar 14 11:04:54 EDT 2008 | herman

Samir, To correct some misconceptions on the answers to your question, and "what you know from experience": With both ENIG (Electroless Nickel/Immersion Gold-IAu) and IAg (immersion silver), soldering does not take place to the gold or the silver. Wh

Re: all powerfull UP78..or is it..?

Electronics Forum | Fri Apr 30 15:24:12 EDT 1999 | Kevin Hussey

| Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | My question's are really : | how is the printabilit

Re: all powerfull UP78..or is it..?

Electronics Forum | Fri Apr 30 09:20:09 EDT 1999 | Chrys Shea

| Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | My question's are really : | how is the printabilit


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