Electronics Forum: not soldering (Page 1 of 14)

not good soldering

Electronics Forum | Fri Sep 07 16:26:34 EDT 2018 | m_imtiaz

thanks for your input

not good soldering

Electronics Forum | Wed Aug 29 09:32:27 EDT 2018 | m_imtiaz

Dear All We are using structural similar type of connector in A & B product with same set parameter in selective soldering machine but result in B product is not good. Observation – Plating on A product Connector terminal done on all 4 side But In

not good soldering

Electronics Forum | Sun Sep 09 08:38:14 EDT 2018 | devinpcb

I have found the paste flux is the worst. It leaves a black residue that can corrode.

not good soldering

Electronics Forum | Wed Aug 29 12:12:14 EDT 2018 | solderingpro

What type of flux are you using today? - Obviously you have already outlined the difference in the parent materials and parent material preparation, so using the same program/profile will not work; the characteristics are different. Try increasing p

not good soldering

Electronics Forum | Mon Sep 17 12:21:43 EDT 2018 | bpeay

M_, the parts may be similar but the boards look to be different. Is the thermal relief for each lead on each board the same? what is the board finish, HASL, Enig, OSP or other? The part itself may not be your problem but the part that is partial pla

RF board not soldered

Electronics Forum | Mon Oct 20 15:24:52 EDT 2008 | davef

During reflow soldering, sometimes via fill with solder leaving the solder connection starved. Questions are: * Specifically, what is the problem you see? * Do the defective pads show that solder has melted in a uniform fashion? * How do the tempera

Solder not reflowing properly

Electronics Forum | Mon Dec 15 15:34:17 EST 2008 | dyoungquist

Sorry it has taken me so long to respond. I got pulled off onto other projects and was not able to work on the solution to the problen until recently. The solution we have come up with is to change from no-clean flux based solder paste to water sol

RF board not soldered

Electronics Forum | Mon Oct 20 21:57:58 EDT 2008 | jdt13

The problem that I see is the pads not soldered and I can see on the X-Ray the solder on the pad after reflow, and yes the solder has melted in a uniform fashion, I have not measured the diference of temperatures in each pad of the PCB, the size is a

Solder not reflowing properly

Electronics Forum | Mon Aug 25 18:27:58 EDT 2008 | dyoungquist

Here is a post of the current profile. I have contacted our solder paste provider. They give a general lead free reflow profile guide. All that shows is genreral recomendations for temperature ranges and time ranges in each section of a typical

Solder not reflowing properly

Electronics Forum | Thu Aug 28 11:13:53 EDT 2008 | janz

Have you tried to run the same process but with diffrent solder paste manufacturer.? This give you information whether paste is ok. Try also print paste on the bare board and run through reflow oven. Check 2-3 boards. Is it the same places where i

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