Electronics Forum: acid copper (Page 4 of 5)

Re: Suspected Pink Ring

Electronics Forum | Tue Jul 27 17:47:36 EDT 1999 | Earl Moon

| While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That would

Re: Via's in BGA pads

Electronics Forum | Wed Apr 21 14:38:38 EDT 1999 | Justin Medernach

| Does anyone have any experience with soldering 50mil pitch BGA's that have a via in the pad, the size is .012 The via will be masked off on the bottom side of the board. Need to know what precautions or problems if any I might encounter. The proces

Re: Suspected Pink Ring

Electronics Forum | Wed Jul 28 16:36:30 EDT 1999 | Earl Moon

| | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That w

Re: Suspected Pink Ring

Electronics Forum | Wed Jul 28 12:02:48 EDT 1999 | Wolfgang Busko

| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou

Re: Tin-Lead thickness on PWB's/Let's Hear More

Electronics Forum | Thu May 28 07:25:58 EDT 1998 | Earl Moon

| Hey yooze guys! | Enough of the jokes between you and Earl (GRIN), let's get back to the topic...well, okay... you can tell a few more...(but good ones, 'kay?) | Anyhoo...I'm not sure if ya'll are on the IPC Technet list or not, I've not seen any p

Re: Tin-Lead thickness on PWB's/Let's Hear More

Electronics Forum | Thu May 28 05:43:33 EDT 1998 | Earl Moon

| Hey yooze guys! | Enough of the jokes between you and Earl (GRIN), let's get back to the topic...well, okay... you can tell a few more...(but good ones, 'kay?) | Anyhoo...I'm not sure if ya'll are on the IPC Technet list or not, I've not seen any p

Re: Wadda Ya Mean Wadders Different?

Electronics Forum | Thu Sep 03 12:12:41 EDT 1998 | Dave F

| | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon bed,

Re: Corrosiveness Measure

Electronics Forum | Thu Sep 03 21:51:16 EDT 1998 | Dave F

| | | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon

Re: Corrosiveness Measure

Electronics Forum | Fri Sep 04 08:49:04 EDT 1998 | Ben Salisbury

| | | | | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, car

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Sun Apr 25 12:05:50 EDT 1999 | Chrys Shea

| | | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free solderin


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