Electronics Forum: smd flip over (Page 1 of 21)

smd led storage

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

smd led storage

Electronics Forum | Fri Mar 19 03:50:37 EDT 2010 | grahamcooper22

Some things you have to be sure of... Can you guarantee the LEDS are DRY when you receive them ? They may be packed in dry bags but when was this done and has the LED distributor had them open at his site ? Using vacuum sealed dry packs is a good way

smd led storage

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

smd capacitors- ICT measuring

Electronics Forum | Thu Jun 13 08:32:24 EDT 2013 | rway

Have you verified the measurements on the bench with an LCR meter? Chances are you are experiencing aging with these ceramic caps. We have similar issues with X5R and X7R caps. You will see the effects of aging with returns from the field as well

Conformal Coating over PBGA

Electronics Forum | Wed Aug 13 21:03:01 EDT 2003 | davef

Your dust collection / humidity / ionic path concern is reasonable. Consider applying your conformal material thick enough to form a good barrier between the device edge and the board, similar to what you do for QFP. [Admittedly the QFP is not a pre

via under a smd pad ?

Electronics Forum | Tue Nov 13 09:36:18 EST 2007 | rgduval

From a manufacturing standpoint, this isn't very nice. Vias will tend to wick solder away from the pad, resulting in insuficient solder joints, which require touch-up. The amount of times any solder joint is reheated should be minimized, as extra h

via under a smd pad ?

Electronics Forum | Fri Nov 23 16:32:05 EST 2007 | davef

There a several things you can do to prevent the solder wicking down the hole with the current design, and that's where you should focus. Cost goes up as you go down the list, but in neither case do you need to respin the board, have solder starvatio

Immersion Gold over Nickle de-wetting problem

Electronics Forum | Thu Mar 06 11:36:37 EST 2003 | O' Connor

Hi, I'm experiencing a problem on a standard part made many times before -Ni/Au finish PCB, Reflow 100% SMD parts. After reflow the gold on the pads does not fully fuse with the solder paste it remains intact on the extremities of the pads, it seems

Re: Help with new placement equipment

Electronics Forum | Fri Oct 16 12:45:23 EDT 1998 | smd

| | | I need to install some new lines for high mix low volume products in an already cramp building. Could someone share any info about the machines which give you the best bang for floor space. I need a 2 machine system for placing 0402 to fine pi

What's Best: D Pace, Simplimatic, or Lynx?

Electronics Forum | Wed Sep 16 07:18:20 EDT 1998 | smd

We're getting new SMT equipment! A flex machine and conveyors to boot. We have Simplimatic equipment now but I'm wondering about Lynx (I have the strong impression that Philips wants to deal) or this D-pace company? What's the 411 on these guys? Equ

  1 2 3 4 5 6 7 8 9 10 Next

smd flip over searches for Companies, Equipment, Machines, Suppliers & Information

Online Equipment Auction of Altronic: Small-Batch Surface Mount & Assembly Facility

Training online, at your facility, or at one of our worldwide training centers"
SMTAI 2024 - SMTA International

Nozzles, Feeders, Spare Parts - Siemens, Fuji, Juki, Yamaha, etc...
SMT feeders

Software for SMT placement & AOI - Free Download.