WBode plot
WBreakdown voltage
WGain (electronics)
WInput impedance
WInrush current
WJohnson–Nyquist noise
WLeading and lagging current
WNoise (electronics)
WOpen-circuit voltage
WOutput impedance
WPsophometric voltage
WQ factor
WShot noise
WSkin effect
WSlew rate
WStray voltage
WThreshold voltage
WVoltage droop
WX-parameters