Electronics Forum | Fri Mar 19 13:18:03 EDT 2010 | deanm
Regarding your question about buying equipment to vacuum seal the MBBs, according to the IPC/JEDEC standard, "Full air evacuation is not needed or recommended; light air evacuation will reduce the packaging bulk and enhance carton packing. Excessive
Electronics Forum | Tue Mar 23 03:42:51 EDT 2010 | grahamcooper22
Hi, It is very important to follow IPC JEDEC 33 specification for storage and handing of all MSDs. In many instances defects caused by excess moisture in packages is not immediately evident (pcbs may pass final test) but when pcb has been in the fiel
Electronics Forum | Fri Mar 19 07:18:14 EDT 2010 | grahamcooper22
Hi, do you know if your LEDs are moisture sensitive ? And if so what MSL level ? Surprisingly it seems that not all are, but some seem really sensitive. I imagine the differences are down to the plastics used and the LED manufacturing processes. I a
Electronics Forum | Thu Mar 18 18:07:21 EDT 2010 | grahamcooper22
Hi, First check what the Moisture Sensitivity Level of the LEDS is....you may need to ask the LED manufacturer. Once you've established it is moisture sensitive then follow latest version of IPC JEDEC 33 spec. for storage of them and drying them if t
Electronics Forum | Fri Mar 19 03:13:35 EDT 2010 | mun4o
Hi, First check what the Moisture Sensitivity > Level of the LEDS is....you may need to ask the > LED manufacturer. Once you've established it is > moisture sensitive then follow latest version of > IPC JEDEC 33 spec. for storage of them and dryi
Electronics Forum | Fri Aug 30 07:27:21 EDT 2013 | duso02
Contact the coating manufacturer to get their response. We use many different coatings every day and they all glow differently but that has no affect on the coating itself. As stated earlier, it's job is only as an inspection tool to identify where
Electronics Forum | Wed May 15 05:44:04 EDT 2019 | peterchan
1、YSVJ-650B three-group multi- blades cutting machine, multiple sets of tools run at the same time, split the whole piece at one time, greatly improve production efficiency; multiple sets of tool design ensure that the split plate effect is not defor
Electronics Forum | Fri Aug 28 12:11:10 EDT 2015 | davef
LED: [Light-emitting diode] https://en.wikipedia.org/wiki/Light-emitting_diode Neon lamp: https://en.wikipedia.org/wiki/Neon_lamp
Electronics Forum | Tue Dec 22 23:57:21 EST 2020 | ttheis
Ok; is this the 5a box located under and behind the pdp? I see now in the diagram it is labeled pdp1.ps1. Any suggestion for what to check to determine if the problem is the power supply or something connected to it? I noticed that when the 12v po
Electronics Forum | Tue Dec 22 00:11:41 EST 2020 | ttheis
Well it seems you are onto something with the vme power supply. The issue has resurfaced and I did notice the LED's on the keyboard went out when the issue occurs. I looked at the power distribution board to the left of the vme and it shows the +12V
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