Key supplier of sheetmetal work and metal components ,OEM machine builder & assembler service.
Process Technology is a wet process heating and cooling equipment manufacturer offering electric immersion heaters, inline heaters, heat exchangers, and temperature and level controls.
Time Pressure Liquid Dispensing Pump with Foot switch / Dry contact A great addition to Fully Automatic Dispensing System Time pressure is a versatile method of dispensing that functions across a wide range of viscosities. This dispensing method wo
New Equipment | Solder Materials
8 hours in controlled environment) Prints consistently at a wide range of speeds Wide reflow process window for profiling Excellent wetting on a variety of surface finishes Maintains tack over time Suitable for SnPb eutectic alloys as well
Electronics Forum | Tue May 23 09:01:48 EDT 2006 | russ
Seems as though the problem is with PCB and not component? "Solder does not wet to pads, wets to component" What is your board finish? Russ
Electronics Forum | Mon Jul 29 16:43:55 EDT 2002 | mcm4me
I have a customer with up to 8% scrap from one board supplier and 1% from another supplier for solder dewett and no wet over ENIG finish with mask defined pads. Initially I suspected mask residue on pads because of the no wets but I have come to find
Industry News | 2018-10-18 08:21:10.0
How to Prevent Non-Wetting Defect during the SMT Reflow Process
Industry News | 2014-07-21 13:55:54.0
Briefing Co-hosted by IPC as Part of Continuing Effort to Connect IPC Members with Policymakers
Technical Library | 2021-07-06 21:13:36.0
The surface finishes commonly used on printed circuit boards (PCBs) have an effect on solder paste performance in the surface mount process. Some surface finishes are non-planar like hot air solder level (HASL) which can lead to inconsistencies in solder paste printing. Other surface finishes are difficult to wet during reflow like organic solderability preservative (OSP). What is the overall effect of surface finish on solder paste performance? Which solder paste is best for each surface finish? It is the goal of this paper to answer these questions.
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.
Time Pressure Liquid Dispensing Pump with Foot switch / Dry contact A great addition to Fully Automatic Dispensing System Time pressure is a versatile method of dispensing that functions across a wide range of viscosities. This dispensing method wo
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
Training Courses | | | PCB Assembly Courses
The PCB assembly courses provide knowledge of different processes and equipment used in TH and SMT assembly of printed circuit boards.
SMTnet Express, November 19, 2017, Subscribers: 30,938, Companies: 10,768, Users: 23,942 To Quantify a Wetting Balance Curve Frank Xu Ph.D., Robert Farrell, Rita Mohanty Ph.D.; Enthone Wetting balance testing has been an industry standard
SMTnet Express, July 8, 2021, Subscribers: 26,934, Companies: 11,398, Users: 26,743 Effects Of Surface Finish On High Frequency Signal Loss Using Various Substrate Materials The amount of information transferred on wireless networks
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/leadfree.pdf
°C N2 Good Wetting but Surface Finish Looks Grainy (Acceptable ball formation) PROPRIETARY AND CONFIDENTIAL INFORMATION Pages: 10 of 24 Rev Level: 1 Rev Date: 1/03/01 Test # 2 Tin, Silver Copper, Antimony, BGA 230
| https://pcbasupplies.com/s3x58-hf1100-3-600gm/
results in all soldering features such as wetting, flux splattering, voiding, printing, tackiness, electrical reliability, halogen free, etc
