Techniques we teach in IPC J-STD-001 at Circuit Technology Inc. John Gammell, Master IPC Trainer, demonstrates how to solder chip and MELF components to IPC Class 3 criteria. (919) 552-3434 www.circuittechnology.com
The common first step is to clean the pads with IPA. For very small chip components you can use solder paste (applied with a needle applicator controlled volume machine) and hot air. Which takes a little more time but the part will be stress free because it will be floating, like in a reflow process, before the solder hardens.
Thank you for your video Sir John, but as per to the IPC standard proper chip installation or in most component, you need to heat the land and component lead/connector first before you do the solder wire.
I can't believe I just spent an hour watching all your videos, and the only noise was from the occasional spray or vacuum. The videos are great, though. Hot air soldering? Now you're just showing off! Good job, I learned a lot. Thanks!
Considering the crystallization of the solderring tin, i would say that you used leaded tin? in my years in an SMT department, i can and will never get a result as pretty as that. But i love your efford for cleaning and flux. i do also :)
@@ryanhubbard7582Nah, it definitely has to do with the kind of solder used. Leadfree solder tends to look completely different compared to leaded solder. Where the latter looks shiny, leadfree solder can appear as a bad solder joint to a person not trained to the differences in wetting-appearance between the different kinds of solder out there.
taking my J-std next month. I've been repairing two way radio and duplexers for a year now, that's my only experience which was learned in house. Any recommendations on what to brush up on prior to course?
Too little solder used. Will develop local heat spots and eventually fail in a year-two of usage. I'd say I see some advanced soldering technique used, but far from master level.
I need an electronic map for a voltaic regulator for special Russian armor generators so that the input voltage of 24 volts enters the regulator and exits it to the generator. The generator specification is an armature generator with a speed of 1500 cycles and even a minute and an excitator induction coil with a small resistivity of 5 ohms. ) Go to the card can help you in the simplest electronic map