Electronics Forum | Wed Jul 14 18:51:24 EDT 2010 | rway
Thank you. I spoke with our SMT guy, and he stated that there is plenty of board support on the pcb. So it's not a matter of flexing. There just seems to be inconsistancy in the solder application. He did mention that part of the problem is a lac
Electronics Forum | Tue Dec 14 14:26:20 EST 1999 | John Thorup
Sure KA, it's done every day. Be sure that the components to be used on the bottom can take the maximum heat of the wave and the delta T of entering the wave. Depending how complex the bottom side is you will get better results with attention paid
Electronics Forum | Fri Oct 22 23:45:37 EDT 1999 | Jim Cristiano
Hi, I'm looking for vendors that manufacture connector pins that would solder onto the edge of a small SMD pcb so that I can mount it as a SIP onto a larger PCB. Better yet, are there small diameter pins that can be soldered into thru-holes so the SM
Electronics Forum | Sat Nov 09 15:13:06 EST 2002 | mjabure
If I understand what you're saying, you are reaching reflow temp's on the top side while soldering bottom side components. You might want to run a glass gauge plate over the wave and make sure your contact pattern isn't too large. If your PCB is in c
Electronics Forum | Tue Mar 01 10:21:55 EST 2005 | davef
IPC Plating Committee is presently working on a specification for immersion tin [IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards] as a solderable surface finish. Immersion tin is normally deposited at 30 to 60 microinches.
Electronics Forum | Mon Mar 21 12:02:09 EST 2005 | Rob
Hi Colin, Are you using the 1206 package with 4 elements or one of the higher density smaller packages? With the first type you can get them in both Convex or Concave terminations, with most of the solderability problems associated with using the C
Electronics Forum | Tue Mar 22 08:13:39 EST 2005 | Rob
Hi Colin, If it's easy for you to swap to Convex try the Rohm MNR14 series, Bourns CAY series or Eurohm NC Series. Else try a 10% apperture reduction - however we usually had a 6 thou stencil when we did this. Cheers, Rob.
Electronics Forum | Mon Aug 07 19:41:24 EDT 2006 | Ron
I have a PC graphics card that has a damaged component and I have no clue what it is. The other two that look identical are black flat top with which looks like a mini copper coil in the middle and two leads on each side. They are the last componen
Electronics Forum | Tue Aug 08 17:15:16 EDT 2006 | Ron
That's exactly what I thought but needed a second opinion. I found a part that matches the size, dimensions and two coil but am unsure which impedance it would be. http://www.bourns.com/pdfs/pm0805cm_pm1206cm.pdf Thanks for your input!
Electronics Forum | Wed Aug 09 04:06:47 EDT 2006 | Rob
Bourns is quite a high end name in the electronics industry & you usually pay a premium for percieved Swiss precision engineering. If your card is far east built it is much more likely to have an inductor on from Murata, Panasonic, or one of the Chi
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