Electronics Forum: chip tantalum discolouration (Page 1 of 2)

Re: wave soldering surface mount tantalum and ceramic capacitors

Electronics Forum | Fri Feb 05 09:39:58 EST 1999 | Dave F

| Can anyone help me with the pros and cons of trying to wave | solder tantalum and large (1812) ceramic capacitors. I do | know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what proble

Re: wave soldering surface mount tantalum and ceramic capacitors

Electronics Forum | Tue Feb 16 16:28:30 EST 1999 | Tuffty

| | Can anyone help me with the pros and cons of trying to wave | | solder tantalum and large (1812) ceramic capacitors. I do | | know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what

SOT23 jumping off pads when reflowing

Electronics Forum | Wed Sep 17 03:15:40 EDT 2003 | Daan Terstegge

Are there via's underneath the Tantalum, closed with soldermask on the other boardside only ? I've had a situation recently where a chip resistor was blown away by the outgassing of via's under a Tantalum. The presence of the Tantalum caused the vap

capacitor shelf life

Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef

Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and

SOT23 jumping off pads when reflowing

Electronics Forum | Tue Sep 16 10:57:01 EDT 2003 | Gabriele

Also most of Tantalum Caps are iron-magnetic material made, for sure is not this case but always wen we met problems like James met, we had always sot-23, light capacitors 0603 as you know some of them have Nikel barriel (also magnectic sensitive) an

Taintalum Caps

Electronics Forum | Wed Aug 20 08:23:36 EDT 2008 | davef

Your tantalum capacitor supplier offers the best advice. We're not sure of the package that you plan to use. * If you are referring to molded package, surface mount, tantalum caps, yes, they can be wave soldered. Smaller case size chips (eg, Kemet A

Lead free parts on a leaded assembly

Electronics Forum | Thu Oct 05 15:58:16 EDT 2006 | RusH

Mario, Thanks for your response. We are building a leaded assembly with hot air leveled Sn/Pb pads on the PCB. In one case the component is a 7.5X5.2X1.8 wire wound ferrite inductor with Au/Sn leads. The second component is an 0808 Tantalum cap,

Typical placement speeds - please advise

Electronics Forum | Sat Jun 28 07:19:32 EDT 2014 | sramos

Based on your knowledge and experience, could you tell me about speed differences when placing a mix of SMD at mass production? We could consider packages like the small R & C chips, then SOD323, SOT-23, SOT-23-5, SOT23-6, SON6, QFN8, SOIC-8, SOIC-16

SOT23 jumping off pads when reflowing

Electronics Forum | Thu Sep 18 15:29:59 EDT 2003 | Gabriele

Hi all, by reading along those thread (SOT23) and Tan outgassing I learned plenty of things. My first time approacing this kind of Q$A Forum, very intesting tech communication way. Any way, the path of magnetism effect was chosen when time ago we met

component aherence force on the solder paste before reflow

Electronics Forum | Tue Jul 03 08:14:49 EDT 2001 | Stefan Witte

If you hold your board sideways in a 90 degree angle you apply a force of 1 g to your components. 1 g translates into 32 ft / sec. square. This is not too much acceleration for fearless roller coaster drivers but Melf�s and Tantalums can fall off at

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