Electronics Forum: can not solder to pad (Page 2 of 12)

Board change and solder not adhereing completely

Electronics Forum | Fri Apr 06 08:27:09 EDT 2001 | CAL

From what you are saying................If I hear ya correctly - There is no "Proctective" on the Pads (OSP, HASL....) You will be hard pressed soldering to bare copper. This can not be right. My suggestion- go polyimide with electroptical connecti

Board change and solder not adhereing completely

Electronics Forum | Fri Apr 06 08:28:34 EDT 2001 | CAL

From what you are saying................If I hear ya correctly - There is no "Protective" on the Pads (OSP, HASL....) You will be hard pressed soldering to bare copper. This can not be right. My suggestion- go polyamide with electroptical connectio

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

To bake or not to bake?

Electronics Forum | Sat Sep 26 22:08:07 EDT 1998 | Jeff Sanchez

I recieved a pack of sensitive IC's that said they needed to be baked befor certain processes. If I need to do rework, do I have to bake prior to single soldering of these IC's. Or can I just place one as needed by hand with out baking? Any info woul

2512's To Wave or not to Wave????

Electronics Forum | Tue Apr 27 12:19:17 EDT 1999 | John

Has anybody had experience wavesoldering 1 watt 2512 resistor packages?? I know it can be done, but are there reliability issues? We are in the middle of a new product and the question was posed to me "Can we use 2512 1 watt resistors on the bottom

Re: To bake or not to bake?

Electronics Forum | Mon Sep 28 08:35:15 EDT 1998 | Earl Moon

| I recieved a pack of sensitive IC's that said they needed to be baked befor certain processes. If I need to do rework, do I have to bake prior to single soldering of these IC's. Or can I just place one as needed by hand with out baking? Any info

Re: To clean or not to Clean??

Electronics Forum | Mon May 31 21:50:59 EDT 1999 | Dave F

| | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processing a double-

Re: To clean or not to Clean??

Electronics Forum | Mon May 31 15:09:56 EDT 1999 | JohnW

| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi

Re: To clean or not to Clean??

Electronics Forum | Mon May 31 15:10:14 EDT 1999 | JohnW

| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi

Re: To clean or not to Clean??

Electronics Forum | Sun May 30 18:52:35 EDT 1999 | Graham Naisbitt

| | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processing a


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