Electronics Forum: 500 ppm (Page 4 of 5)

Re: Wave Soldering DPPM

Electronics Forum | Thu Jun 17 10:20:15 EDT 1999 | Brian Wycoff

| | | Dear All, | | | | | | We are having a big debate over what is the industry standard in DPPM on the wave sodlering process. is a DPPM of about 800 satisfactory. As per our big bosses it should not be more than 50 DPPM. Is the figure realistic

Re: Good Solder Joint Failures

Electronics Forum | Tue Feb 16 12:14:12 EST 1999 | Gregg Reick

| Hope some of you out there can help me with this one. | I am getting feedback from our test department that they are showing opens on solder joints which have visually good wetting. The touch-up operators confirm that the joint looks good. All they

AOI False call rate vs defect rate PPM

Electronics Forum | Thu Jun 13 14:41:40 EDT 2024 | tommy_magyar

Hi David, In one of my previous jobs I worked as an AOI/AXI process engineer and we had a set target of 75% FPY. This means that 75% of the boards at IPC Class 3 standards would not have a single false call. This also means you would need to set y

Re: solder mask

Electronics Forum | Wed Aug 11 13:34:58 EDT 1999 | Dave F

(snip) | | You're quite right. However, anyone who uses MeCl in an aerosol spray needs his head examining. I'll go further: if he continues, he will most CERTAINLY need his head, the rest of his CNS and his liver examining a little later on. It has

Re: Cracked Capacitors

Electronics Forum | Sat Jun 12 10:46:32 EDT 1999 | Dean

| Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from manufac

Re: solder mask

Electronics Forum | Wed Aug 11 09:51:11 EDT 1999 | Brian

| | | Easy goods-in polymerisation check: clean, white, cotton cloth: wrap it round a suitably gloved finger and pour a few drops of methylene chloride (! toxic) onto the end of the finger and rub it onto the bare board for a minute or so. If it come

Re: Cracked Capacitors

Electronics Forum | Sat Jun 12 16:33:52 EDT 1999 | JohnW

| | Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from manuf

Need used pick and place for low volume, high mix - suggestions?

Electronics Forum | Tue Apr 27 23:10:16 EDT 2010 | mbrunton

I am looking at buying a pick and place machine to assemble the circuit boards we make. Most of the boards are small (2 to 10 square inches), most are 2 sided, and have maybe 20-50 parts per side. I use mostly 0805/0603 chips, SOT-23, SOD-123, SOIC

Re: Cracked Capacitors

Electronics Forum | Mon Jun 14 08:48:29 EDT 1999 | Adam Pratt

| | | Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from man

Re: Cracked Capacitors

Electronics Forum | Mon Jun 14 11:39:29 EDT 1999 | Marshall

| | | | Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from m


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