Key parametrics for VCO and tuning applications
The KVX2001-23-0: This is a single silicon tuning varactor (TVAR) diode in a non-hermetic plastic SMT package, designed for voltage-controlled oscillator (VCO) and phase-locked loop (PLL) tuning circuits where a voltage-variable capacitance is required. The 22 V peak reverse voltage sets the maximum tuning voltage the diode can withstand before breakdown — stay below this in the bias network to avoid reverse leakage or permanent damage. A figure of merit (Q) of 160 at 4 V and 50 MHz indicates low series resistance at that bias point, which translates to lower phase noise in the oscillator tank circuit compared to a lower-Q varactor. Capacitance is 22 pF at 4 V reverse bias and 1 MHz — this is the nominal tuning capacitance; the C-V curve rolls off as reverse voltage increases, giving the designer the tuning range for the LC tank.
Supplied in Bulk (tube or tray), not tape-and-reel — confirm the feeder compatibility if the pick-and-place line expects reeled parts; the SOT-23-3 footprint is standard and matches the TO-236-3 / SC-59 land pattern.