P-Q-R
PCB (Printed Circuit Board)
An organic substrate that electrically connects and mechanically supports electronic components, serving as the foundation for electronic circuits.
Particle Counter
A device that measures the number and size of particles suspended in air or liquid.
Pulse Laser
A laser that emits light in pulses repeatedly at a given frequency.
Pulse Width
The time interval of pulsed signals (see diagram below) represents the time between the half-power points at the rising and falling edges of the pulse.

RFID (Radio Frequency Identification)
A technology used for automatic identification using radio waves. It is commonly used in applications like contactless cards for transportation and identification and for automated checkout systems.
Reflow
A component mounting process in which solder applied to components is melted in a reflow furnace to attach components to a printed circuit board.
Resin Potting
A sealing method where thermosetting resin is poured over a device after wire bonding to protect the bonding wires.