Electronics Forum: surface tension of molten solder (Page 1 of 3)

Blue-Film on surface of leadfree Pot

Electronics Forum | Wed May 30 10:09:39 EDT 2012 | brettrenishaw

Recently we have noticed a purple-blue colour film on the surface of the molten solder. It can be cleared when de-drossing the pot. The pot will normally go a yellow/gold colour before it turns purple-blue. Is this most likely an oxide of the tin or

Re: Tombstoning of chip capacitors

Electronics Forum | Tue Aug 24 15:15:43 EDT 1999 | John Thorup

| Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | Any help would be appreciated. Thanks. | Most common reason is uneven heating where one side of the component ach

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 07:53:08 EDT 1999 | Scott Davies

| | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | Any help would be appreciated. Thanks. | | | Most common reason is uneven heating where one side of the com

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 09:48:28 EDT 1999 | Larry Koens

| | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | Any help would be appreciated. Thanks. | | | | | Most common reason is uneven heating where one side

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 16:42:32 EDT 1999 | Dave

| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 21:44:03 EDT 1999 | Jason Tomlinson

| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 09:53:40 EDT 1999 | lwk

| | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | Most common reason is uneven heating where

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 15:47:25 EDT 1999 | JohnW

| | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | Most common reason is uneven hea

Volume and average height of solder paste after printing machine

Electronics Forum | Thu Oct 02 12:22:26 EDT 2008 | JerryS

Hello Ok there is not much info here. What you have to mae sure of is several key factors. 1. Have you entered the correct stencil thickness. 2. Are you using the stencil gerber (not the paste layer) The paste layer is usually not adjusted for ap

Re: aspect ratio for massive components on the solder side of double-sided reflowed PCBs

Electronics Forum | Thu Oct 19 16:10:44 EDT 2000 | John Thorup

Much has been said on this subject. Try a search of the archives for the terms "Phil Zarrow" and "surface tension". You'll likely find what you need.

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