WAPRO electrical components Germany WAPRO model WAPRO price

WAPRO electrical component is a varactor diode, also known as a "variable reactance diode," made using the characteristic that the junction capacitance of a PN junction changes with applied voltage when reverse-biased. As the reverse bias voltage increases, the junction capacitance decreases; conversely, it increases. The capacitance of a varactor diode is generally small, with a maximum value ranging from tens of pF to hundreds of pF. It is mainly used in high-frequency circuits for automatic tuning, frequency modulation, and phase adjustment, such as acting as a variable capacitor in the tuning circuit of a television receiver. Main parameters include: zero-bias junction capacitance, zero-bias quality factor, reverse breakdown voltage, and center reverse bias voltage.