What is an Impedance Control PCB?
What is Controlled Impedance? Controlled impedance is the characteristic impedance of the transmission line formed by the PCB traces and their associated reference planes.
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What are the benefits of using PCB gold fingers?
Excellent electrical conductivity due to direct board connection and more gold thickness, strong wear resistance allows the PCB to be plugged and unplugged thousands of times, and the PCB pads use a hard gold plating process with good oxidation resistance
What is the appearance inspection standard of PCB gold finger?
Raised corners, nicks, scratches, sink (spots) and tin stains, oxidation, exposed copper or exposed nickel, spot copper shavings, test pin spots.
What is an amplifier PCB?
Amplifier modules, also known as amplifier boards, are PCB (printed circuit board) modules that have audio amplifier chips.
What are the materials suitable for high voltage PCB?
Some of the substrate materials used in high voltage PCBs include: BT epoxy, phenolic cured rigid laminate, high voltage Teflon (HVPF).
What are the main things needed when routing a high voltage PCB?
Maintain clearance between high voltage drop traces. Avoid any sharp turns and edges as they can act as areas for concentrated electric fields. Avoid running very high voltage traces on the inner layers of the board.
What PCB materials are needed for RF?
The high-frequency material most familiar to users of PCB laminates is probably polytetrafluoroethylene (PTFE), a synthetic thermoplastic fluoropolymer with excellent dielectric properties at microwave frequencies.
Why use FR4 in PCB?
FR4 is the most used material in PCB construction. Circuit boards made of FR4 are strong, waterproof, and provide good insulation between copper layers, minimizing interference and supporting good signal integrity.
How thick is the FR4 PCB?
The standard thickness of the PCB is 1.57 mm. Some manufacturers will accommodate other specific thicknesses of 0.78mm or 2.36mm. When we say "thick" or "thin" FR4, we are usually comparing to the standard thickness of 1.57mm.
How is PCB impedance calculated?
The impedance of a circuit board trace depends on: trace width and thickness. The height of the dielectric layer between the signal trace and the reference plane. The dielectric constant of the dielectric material used in the circuit board.
What is an Impedance PCB?
Impedance is the combination of capacitance and inductance when a circuit operates at high frequencies.
How many kinds of gold are suitable for PCB gold finger plating process?
Two types: electroless nickel immersion gold and electroplated hard gold.
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