Electronics Forum: smt and component and shortage (Page 1 of 13)

Heat guns and component damage

Electronics Forum | Wed Feb 01 22:27:16 EST 2006 | KEN

Many relays use soldered post coil terminatins inside the relay. In one case many years ago I found the SMT relay manufacturer used eutectic solder inside their hermetic relay. The SMT relay would fail because the solder balled up on the post, woul

Heat guns and component damage

Electronics Forum | Tue Jan 31 15:51:04 EST 2006 | russ

Relays huh? I can tell you from previous experience that relays are not a good heat gun candidate. Did you check how long this part can withstand the 240? I do not know what the 4 setting is on a liester but it is probably well in excess of the 24

Heat guns and component damage

Electronics Forum | Tue Jan 31 15:40:44 EST 2006 | mgdrouin1

Comp is relay. I've pulled the spec. Max 240. Using Leister h/g with manual temp settings from 1-6 (20 - 600C)set by the operator. Gun was set to setting 4. They are using the heat gun to reflow the solder after SMT but before wave. High fai

Bottom side smt and thru hole

Electronics Forum | Tue May 26 22:13:15 EDT 1998 | Pat Copeland

R&D is currently designing a board with smt components on both sides of the board. They are adding a 16 pin IC Gull wing. on the bottom side of the board. I have asked for only caps and resistors to be placed on the bottom side. Is there a recommende

Re: Bottom side smt and thru hole

Electronics Forum | Sun Jun 07 09:43:11 EDT 1998 | Bob Willis

There are some guidlines on design and through hole reflow on my web site to download. Also on pin in hole reflow the SMTA Office has a document on using the tecnology. | R&D is currently designing a board with smt components on both sides of the bo

smt common pad 0402 and 1206 package

Electronics Forum | Fri May 06 08:47:05 EDT 2016 | davef

You're correct. This design will have a record amount of 0402 rework for tombstoning and misalignments. Suggest that the pads on each end of all components be the same size in order to balance wetting forces during reflow.

Re: Bottom side smt and thru hole

Electronics Forum | Wed May 27 13:42:08 EDT 1998 | Chrys

| R&D is currently designing a board with smt components on both sides of the board. They are adding a 16 pin IC Gull wing. on the bottom side of the board. I have asked for only caps and resistors to be placed on the bottom side. Is there a recommen

Re: Bottom side smt and thru hole

Electronics Forum | Wed May 27 14:35:52 EDT 1998 | Justin Medernach

| | R&D is currently designing a board with smt components on both sides of the board. They are adding a 16 pin IC Gull wing. on the bottom side of the board. I have asked for only caps and resistors to be placed on the bottom side. Is there a recomm

Re: Bottom side smt and thru hole

Electronics Forum | Wed May 27 10:19:43 EDT 1998 | Jerry

We have no problems but orientation does matter. Orient with longest side of component body perpendicuar to wave. In other words the same preference as with through hole DIPS. Idea is the same as for through hole, that the surface tension will ten

Clearance between Through hole and chip component

Electronics Forum | Wed Feb 28 11:43:20 EST 2007 | realchunks

Marcin, Think outside the box. If you are glueing the SMT part down, why not have an aperture cut in your stencil (or recut a stencil) between the SMT part and thru-hole. Wave solder hates SMT glue. This will get rid of your solder short problem

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