A varicap diode, varactor diode, variable capacitance diode, variable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased p–n junction.

Mar 10, 2026 · A varactor is a special type of diode that acts as a voltage-controlled capacitor. Instead of passing current like a regular diode, it’s designed to change its capacitance when you apply a …

Jul 23, 2025 · A varactor diode, also known as a Varicap or volt-cap, is a type of PN junction diode primarily utilized in the reverse-biased mode. It is a device whose capacitance varies with the …

Mar 25, 2024 · What is a Varactor Diode? A Varactor Diode (also known with the names Varicap Diode, Varactor Diode, Tuning Diode) is a p-n junction diode which acts as a variable capacitor under …

A varactor diode—also known as a varicap or tuning diode—is a type of semiconductor diode designed to operate in reverse bias, where it behaves like a variable capacitor rather than a typical rectifier.

Junction of lightly doped n-type semiconductor with a metal electrode. The junction of a doped semiconductor (usually n-type) with a metal electrode can produce a very fast-switching diode which …

A Varactor diode is a PN junction diode whose capacitance varies with the change in applied reverse voltage. The internal capacitance is actually the junction capacitance that depends on the width of …

Apr 25, 2024 · What is a varactor diode? Variable capacitors like air capacitors and trimmer capacitors are adjustable manually. In contrast, the capacitance of a varactor diode is controlled by a reverse …

MACOM’s GaAs and Silicon varactor tuning diodes provide broadband performance ranging from 10 MHz to 70 GHz. They are ideal for high Q filter and VCO electronic tuning circuits and are available …

A varactor diode is a P-N junction diode that changes its capaci-tance and the series resistance as the bias applied to the diode is varied. The property of capacitance change is utilized to achieve a …