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A membrane switch is an electrical switch for turning a circuit on and off. It differs from a mechanical switch, which is usually made of metal and plastic parts. A membrane switch is a circuit printed on a flexible material like Polyester or Polycar
Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
Electronics Forum | Thu Aug 22 22:07:44 EDT 2002 | davef
Did the techs have a restful night?
Used SMT Equipment | Pick and Place/Feeders
Applicable PCB L510 x W460mm to L50 x W50mm Note: Available in lengths up to L610mm as an option Applicable components03015 to W55 x L100mm (For parts sizes larger the width 45mm, recognition of parts is divided into sections.), Height 15mm or
Industry News | 2003-03-11 08:45:00.0
CAMtastic DXP is the latest version of Altium's complete CAM verification and editing system that bridges the gap between PCB design and manufacturing and facilitates communication between board designers, fabrication engineers, and their clients.
Industry News | 2003-05-06 09:05:12.0
New Schematic Capture and Simulation Software Delivers Innovative Features and the Industry�s Best Price/Performance
Technical Library | 2008-04-08 17:42:27.0
Concern about the failure of lead-free BGA packages when portable devices such as cell phones are accidentally dropped and a general concern about the resistance of these packages under shock loading has prompted an interest in the impact strength of the soldered BGA connection. This paper reports the results of the measurement of the impact strength of lead-free 0.5±0.01mm diameter BGA spheres on 0.42mm solder mask defined pads on copper/OSP and ENIG substrates using recently developed equipment that can load individual BGA spheres at high strain rates in shear and tension.
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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With the development of miniaturization of assembly components, the layout area and pattern design area of PCBs have also been continuously reduced, and PCB manufacturers are constantly updating the production process to conform to the development tr
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Career Center | Dallas, Texas USA | Engineering
Skills/Requirements: 7 yrs experience with electric power systems, practices and philosophies, project mananagement skills and a working knowledge of protective relay and automation application. Knowledge of load flow and short circuit studies. Duti
Career Center | BANGALORE, India | Engineering,Maintenance,Production
Hi, I have 8 years experience in electronics manufacturing company. I have good knowledge in SMT process and equipment maintenance.i successfully completed more than 200 NPI's. I have good knowledge in SMT machine programming and maintenance
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/polymer-processing-systems/industries/automotive-and-transportation?con=t&page=27
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Surface Mount Technology Association (SMTA) | https://www.smta.org/education/presentations/presentations.cfm
. Three surface finishes including OSP, ImAg, and ENIG are considered. The test vehicle consists of 15mm and 6mm Ball Grid Array (BGA) components. The assembled test boards were isothermally aged at 125oC for 12 months, which are then thermally cycled between -40oC to
