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PC Board Fabrication, V-Scoring-Purpose and Benefits
PCB or a printed circuit board [1] has different holes, cuts, and elements, and V-scoring is one of them. V-scoring pre separates the PCB and designers also call it V-groove because a groove resembling V is cut on the circuit board’s top and bottom. Generally, the depth of the groove is 1/3 of the board depth and there is a thin layer between two Vs for the board processing. The boards with V-grooves are either end to end or side by side with adjacent edges. The groove helps break boards with a little force, and you can divide a single panel ...
How To Choose High-Frequency PC Board Materials For Your RF Microwave Project?
The high-frequency PCB material is based on using a synthetic thermoplastic fluoropolymer which has an excellent dielectric property at different smaller microwave frequencies. For the design of PCB circuits with microwave frequencies, important characterizations that determine laminate circuit performance include dielectric constant (DK), dissipation factor (Df), thermal expansion coefficient (CTE), thermal dielectric constant coefficient (TCDk), and thermal conductivity. The most known high-frequency material for users of PCB laminates may be polytetrafluoroethylene (PTFE), a synthetic thermoplastic fluoropolymer with outstanding dielectric characteristics at microwave frequencies. PCB applications include RF antenna, WiFi (Carrier-Green and Licensed Access), IP infrastructure, power amplifiers, diplexers/multiplexers, testing, measurement, etc. It ...
What is a Keyboard PC Board?
Introduction As all other things are the same, a plate-assembled keyboard is more robust than a PCB assembled keyboard and has a stronger feeling. The overall quality of the keyboard and its case play, too, although it differs from a plate of aluminum or steel between the typing of a laminate sheet (PCB). (It's possible, but very rare, to have a plastic plate on a mechanical keyboard.) In contrast, the PCB-mounted keyboards usually have a bouncer key feel and a more flexible case and creakiness. It is safe to say that plate-mounted keys are generally more high-quality than PCB-mounted keyboards, although ...
SMT Assembly Conformal Coating
Definition Conformal coating is a thin layer of protected polymeric coating applied to printed circuit boards (PCBs) and electronic components. Its goal is to provide environmental and mechanical protection for the components and circuits, allowing them to last longer and be more reliable. It maintains long-term surface insulation resistance values by being electrically insulating, ensuring the assembly's operational integrity. It also prevents corrosion by acting as a barrier to airborne pollutants from the operational environment, like salt spray. Conformal coatings are often applied in the 25-250 micron range. Parylene films, on the other hand, are applied significantly thinner and can be fractions of ...
HOW DOES SMT ASSEMBLY WORK?
While modern designs for electronics get smaller, more designers depend on the technique of surface mounting. After the 80’s, this technique became famous and hasn't stopped being the dominant PCB assembly [1] technology for electronics production. Almost all of the devices in your pocket – either an iPhone xs max or a smartphone – has probably been produced using surface mount technology (SMT). Most of those components in your vehicle or Transportation today have probably been assembled using SMT. [caption id="attachment_621" align="alignleft" width="299"] [2] PCB assembly[/caption] What is Surface Mount Technology (SMT)? Assembling electronics with SMT involves assembling electrical parts using automated equipment that places components ...