Electronics Forum | Wed Jul 29 01:58:08 EDT 2015 | buckcho
Hello, there are several great machines you can choose from. I would recommend making a benchmark, if you can. You chose 4 machines that meet you requirements (mostly prize range) and make them program and debug one of your products. After that insp
Electronics Forum | Sun Dec 11 22:55:22 EST 2016 | ppcbs
What type of flux is in your solder paste? Active or No-Clean? With lead free solder you really should be using an active flux. The lead free oxidizes during reflow if you are not using a Nitrogen or Vapor Phase reflow. So a more robust and activ
Electronics Forum | Mon Dec 26 14:04:42 EST 2016 | luciano
Hi all, I'm having some troubles while trying to set up a wave soldering machine that was working just fine until a few weeks ago. The wave soldering machine is quite basic chinese made. It's 2 meters long, has spray fluxing and a short preheating
Electronics Forum | Thu Dec 29 09:03:03 EST 2016 | sumote
I would cut a piece of cardboard to the same dimensions as your circuit card. Run that through the fluxer of your machine and pull it out before the pre-heater. Take a look at the cardboard and verify that flux has been sprayed on it. That board look
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
Electronics Forum | Thu Jun 22 15:05:55 EDT 2017 | solderingpro
There are several different technologies in the industry today to assist in the out-gassing of flux cores. On automated soldering systems, there are two main types of perforating solder feeders: - Hole Drilling - "V" Scoring By perforating the so
Electronics Forum | Tue Jul 25 13:40:04 EDT 2017 | davegoad
I have some CERSOT-23 transistor packages with castellated terminals. The 4th lead (drain castellation) is electrically connected to the top of the device by the castellation. The castellation goes up the ceramic body and contacts the metal package
Electronics Forum | Thu Jan 18 17:26:30 EST 2018 | davef
I'm aware of no electrical test for detecting voids and air bubbles. If someone was x-raying my boards and saw voids and air bubbles and they weren't happy about it, first thing I'd do is convince them that the boards a within standard. You know some
Electronics Forum | Fri May 04 16:19:52 EDT 2018 | solderingpro
meaning its non-eutectic. You would want to stay as close to 350°C as possible or (if a slightly off version of SAC305) target the highest melting point of your chemistry) - assuming your temp controller is properly calibrated that is. Other option
Electronics Forum | Tue Jun 05 02:10:01 EDT 2018 | buckcho
Hello sir, Limits in SPI can vary a lot, also depending on finishing of the pcb. For example 170% volume on an IC (assuming is fine pitch) can be okay for ENIG, but very bad if HASL. For are I would recommend that you use either 50-130, or 60-135 max
