Electronics Forum: side (Page 201 of 507)

Micro Solder Balls and Vias bridging Issue

Electronics Forum | Mon Mar 02 23:48:22 EST 2015 | vb7007

Hi We are using Universal carrier for a 2 sided PCB, where the bottom side goes for hand solder the switches after wave. Our issue is, we are getting micro solder balls all over PCB bottom after wave, whereas we got numerous vias, which also turns

DQFN INSUFFICIENT SOLDER / HEAD ON PILLOW

Electronics Forum | Fri Mar 06 07:15:38 EST 2015 | saoasasd

Hi, I have faced some problems with DQFN PACKAGE 132 PIN. After some cross sections and dye pry analysis we could find a head on pillow situation always on inner row pads. The PCBAs are double side and the DQFNs are assembled on Bottom side (Noteboo

pcb manufacturing

Electronics Forum | Thu Jan 14 04:45:16 EST 2016 | saimen

Hi There , Glad to contact with you , Here is Saimen in Tianweisheng , wish we will have a good cooperation in the furture if we have the honor . Our company is one of the largest custom-made PCB manufacturer in China. We can OEM,ODM,EMS single side

Reflow Solder REsults

Electronics Forum | Thu Jan 14 04:41:29 EST 2016 | saimen

Hi There , Glad to contact with you , Here is Saimen in Tianweisheng , wish we will have a good cooperation in the furture if we have the honor . Our company is one of the largest custom-made PCB manufacturer in China. We can OEM,ODM,EMS single side

Wave soldering defects

Electronics Forum | Fri Dec 30 11:31:32 EST 2016 | horchak

First profilers are expensive and you can use temperature dots for setting up a wave. You stick them to the top side of the board and they change color based on temp. Top side temp should be around 250f or 125c when it hits the fountain. If you spra

Is there any good service in China for PCB assembly?

Electronics Forum | Thu Oct 18 12:15:03 EDT 2018 | teresat2

The numerous traits of an electronic assembly comprise high volume assembly, BGA, AOI and 3 dimensional solder paste inspection. The value incorporated features of these assembly services comprise low loss, blended technology assembly, many layer, du

PCBA Time Estimation Formula

Electronics Forum | Thu Mar 21 16:50:10 EDT 2019 | emeto

Hello, I've done it before in Excel and it is a very simple concept. Inputs are board size, numbers of SMT and TH process sides, number of SMT and TH placements per side, boards per panel and quantity of boards to be produced. Output will be calcul

PCBA Time Estimation Formula

Electronics Forum | Wed Feb 19 12:47:15 EST 2020 | emeto

Grandpa, You got it - Identifying the bottleneck operation is the key. The secret is to design a tool can predict accurately where this bottleneck is. In your formula you can use machine process time, PCB transportation time, part trim time, part in

MPM Momentum Grid Lock Tooling Manual Mode

Electronics Forum | Wed Apr 24 13:49:19 EDT 2019 | griinder

I have a support question concerning setting the gridlock tooling in manual mode on a MPM Momentum Elite. I am printing the top side (bottom is populated with parts) of a thin, flimsy PCB. The Grid lock tooling bows the PCB upwards in Auto mode, beca

DEK Hawkeye Problems

Electronics Forum | Sat Jun 22 07:38:58 EDT 2019 | emanuel

We have a printer with Hawkeye 1700. The PCB side sometimes returns a distorted picture. It happens erratically, can be at startup or after a while, sometimes the machine works full day without problems. The only way to restore operation is disconnec


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