This unique patented alloy has been developed as a lead free alternative for those now using costly SAC alloys and for those switching from lead containing Sn63/Pb37 alloys to the lead free process. SN100e is manufactured from tin, copper, and cobalt
Solder powders are the key component of all solder pastes. Pastes made with the same flux but with powders that differ in particle sizes often have different rheological/physical properties resulting in differences in screen/stencil printing, compone
Electronics Forum | Mon Sep 22 15:32:20 EDT 2008 | davef
We see this fairly often. It doesn't affect solderability. Our analysis makes us think this coloration is copper. The reason copper appears on the surface may be that heat cycles increase the thinness and porosity of the immersion silver [IAg] coatin
Industry News | 2017-09-07 17:45:03.0
ZESTRON is pleased to announce that Naveen Ravindran, M.S.Ch.E, Application Engineer will present “PCB Surface Finishes and the Cleaning Process - A Compatibility Study” at SMTA International 2017, in Rosemont, IL.
Industry News | 2003-04-10 10:27:46.0
IPC and JEDEC Send Out Call for Papers
PULANG TECHNOLOGY CO,.LTDOffers electronic manufacturing services including PCB designing, electronic contract manufacturing including electronic product design, electronic product development, electronic product repair, PCB manufacturing, electronic
Technical Library | 2019-07-10 23:36:14.0
Pockets of gas, or voids, trapped in the solder interface between discrete power management devices and circuit assemblies are, unfortunately, excellent insulators, or barriers to thermal conductivity. This resistance to heat flow reduces the electrical efficiency of these devices, reducing battery life and expected functional life time of electronic assemblies. There is also a corresponding increase in current density (as the area for current conduction is reduced) that generates additional heat, further leading to performance degradation.
Technical Library | 2021-01-03 19:24:52.0
Reflow soldering is the primary method for interconnecting surface mount technology (SMT) applications. Successful implementation of this process depends on whether a low defect rate can be achieved. In general, defects often can be attributed to causes rooted in all three aspects, including materials, processes, and designs. Troubleshooting of reflow soldering requires identification and elimination of root causes. Where correcting these causes may be beyond the reach of manufacturers, further optimizing the other relevant factors becomes the next best option in order to minimize the defect rate.
This is what the fully assembled How to Solder Kit looks like. Depress the button and one of the LEDs will remain lit at the end (it eventually times out). You can add some kind of template so each LED position has some meaning. The PCB has a real gr
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. Drawbridging See Tombstoning . E ENIG Surface finishing process of electroless nickel followed by immersion gold. During soldering the gold is dissolved into the solder joint
) Plating for Printed Ciruit Boards IPC-4553 - Specification for Immersion Silver Plating for Printed Ciruit Boards IPC-4554 - Specification for Immersion Silver Tin for Printed Ciruit Boards IPC-4562