Datum Alloys is an international supplier of speciality metals and special purpose alloys,
Career Center | Seymour, Connecticut USA | Engineering
Develop and manage SMT assembly and soldering processes and associated staff in medium volume/high-mix printed circuit board assembly operation for complex quality class 2/3 assemblies. DUTIES AND RESPONSIBILITIES: Plan and develop processes a
Industry Directory | Manufacturer
Since 1971, Eagle Electronics Inc. has provided our Customers with the highest quality Printed Circuit Boards at fair and competitive prices.
Industry Directory | Distributor
WIDA is the sole distributor for a number of world-class manufacturers in the electronics industry like Weller, Stannol, Erem, Xcelite, Wire Wrap and Vision Engineering. www.widaco.net
Career Center | Reynosa, Mexico | Engineering
This position is in our Reynosa manufacturing facility, which is across the border from McAllen, Texas. In this critical role, you will be responsible for PCBA, SMT, THT, Wave Solder and secondary operations which will include: =Ensure producti
New Equipment | ESD Control Supplies
High humidity is known to cause problems with electronic parts and components, however compliance with RoHS standards has raised awareness of moisture issues and seen a huge increase in the use of moisture barrier bags. Barrier Bags Use of unleaded
New Equipment | Rework & Repair Equipment
The TMT-HA050 hot air tool can be used for the removal of surface mount components such as SOIC, QFP, PLCC and other similar devices. The Thermaltronics TMT-HA050 hot air tool is a portable and flexible hot air rework system. The Thermaltronics TM
New Equipment | Solder Materials
ALPHA® wave solder and soldering bar metals (wave soldering alloys) offer best value soldering performance – quality solder bar metals products at the lowest cost of ownership, and thanks to a global copy exact product policy, consistency of wave sol
Industry Directory | Consultant / Service Provider / Manufacturer
TRC Circuits provides high quality printed circuit boards to a wide range of industries. We have 23 years of experience manufacturing printed circuit boards.
Technical Library | 2021-10-20 18:21:06.0
The solderability of the SAC305 alloy in contact with printed circuit boards (PCB) having different surface finishes was examined using the wetting balance method. The study was performed at a temperature of 260 _C on three types of PCBs covered with (1) hot air solder leveling (HASL LF), (2) electroless nickel immersion gold (ENIG), and (3) organic surface protectant (OSP), organic finish, all on Cu substrates and two types of fluxes (EF2202 and RF800). The results showed that the PCB substrate surface finish has a strong effect on the value of both the wetting time t0 and the contact angle h. The shortest wetting time was noted for the OSP finish (t0 = 0.6 s with EF2202 flux and t0 = 0.98 s with RF800 flux), while the ENIG finish showed the longest wetting time (t0 = 1.36 s with EF2202 flux and t0 = 1.55 s with RF800 flux). The h values calculated from the wetting balance tests were as follows: the lowest h of 45_ was formed on HASL LF (EF2202 flux), the highest h of 63_ was noted on the OSP finish, while on the ENIG finish, it was 58_ (EF2202 flux). After the solderability tests, the interface characterization of cross-sectional samples was performed by means of scanning electron microscopy coupled with energy dispersive spectroscopy.
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