Electronics Forum | Thu Mar 19 20:12:32 EDT 2020 | slthomas
Stephen, you are spot on with your description. Here's a .jpg with paste layer, copper, and solder mask.
Electronics Forum | Mon Dec 09 08:13:06 EST 2002 | MA/NY DDave
Hi Yes it is common to design for more uniform heat transfer during the soldering phase or even during the operation phase. It all depends on how bad the problem is during automated assembly or during usage. The only difficulty is that the designer
Electronics Forum | Thu Apr 20 02:27:11 EDT 2017 | pavel_murtishev
Mile, Please tell me more about your soldering process: - Are soldering process parameters the same for all three pins? - Is unsoldered pin connected to thermal heavy copper polygon? - What is your board surface finish? HASL? - Sn/Pb or LF process?
Electronics Forum | Wed Apr 13 12:39:20 EDT 2022 | SMTA-64386699
We produce some heavy copper multi-layer boards. 4-6 layer typ with 3oz throughout. WE currently are using a Heller 1912EXL with belt speed around 32-36 in/min. I am looking to replace this oven with a more efficient unit. To the best of my knowledg
Electronics Forum | Thu Jun 10 12:10:41 EDT 1999 | Earl Moon
| | | I am starting a new project which involve 3 oz copper layer with 20 mil components on the top of the board and 0.040" thick copper with D2Pak on the bottom of the board. | | | There is anybody has experience on metal-based PCB reflow process?
Electronics Forum | Tue May 01 20:40:38 EDT 2018 | sarason
In the past I have worked on 600 Amp FET Blocks. The rule was no voids. The circuit board would be heavy copper. 4 times normal plating time. Not particularly high resolution on the board say 20 mils. To help with the heavy plating. The boards were t
Electronics Forum | Tue May 03 15:04:55 EDT 2016 | sumote
Mainly handling issues. I had some heavy boards (solid copper core) that cost some money, like $1200 ea. As they were oddly heavy that they would catch operators off guard, and scrap was a serious issue. Another thing that i dealt with when process
Electronics Forum | Wed Oct 24 06:02:06 EDT 2018 | vipcircuit
Shenzhen Vip Circuit Co.,Ltd is the professional PCB and PCBA manufacturer in China. 1. PCB business include the general PCB and special process PCB such as HDI, high frequency, aluminum base, heavy copper, golden finger, blind via, flex or rigid-fle
Electronics Forum | Mon Oct 29 05:14:18 EDT 2018 | vipcircuit
This is Joe from Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon,Taconic,Aluminum base;
Electronics Forum | Mon Oct 29 11:44:46 EDT 2018 | vipcircuit
Dear Andrew: Nice day! This is Joe from Shenzhen Vip Circuit Co,. Ltd.-- a leading PCB and PCBA manufacturer in China. Why choose Vipcircuit ? 1. PCB fabrication with 100% ET and AOI testing,certified by ISO, UL; 2. Special material like Rogers,Arlon
