Variable Capacitors

Variable capacitors have capacitance values that can be varied by applying voltage to their electrodes.


	All products from this series (10 pieces each) and three evaluation boards (for DFN/CSP and LXRW19V201-58)

		Product Lineup			Basic			Regarding Change the Capacitance
		Sample requests			Other Links			Document download

▼See the series lineup and specifications here.

Variable Capacitors

Variable capacitors have capacitance values that can be varied by applying voltage to their electrodes.

What is a variable capacitor (VAC)?

VACs are passive components with capacitance values that can be varied according to the control voltage. They can be considered for applications such as frequency adjustment.

Murata offers products suited to the HF band (13.56 MHz) used for near field communication (NFC)

Characteristics ：

Compact, slim package

Capacitance variable range of 50%

The capacitance can be finely adjusted by applying voltage.

Basic	Merits of using VAC for NFC ・The variable capacitor absorbs the antenna L value variance for easier f0 adjustment! ・Easier debugging during certification tests. ・Easier variance adjustment when building into cases. >>Click here for Details
		Click here for a video demonstrating frequency variation. >

Regarding Change the Capacitance

To change the capacitance, apply for DC voltage to V_tune terminal.
It does not change even if AC voltage is applied.

Sample requests and inquiries

	Request a Free Sample Kit

We ask that customers please report the evaluation results by around one month after the samples are received. Note that quantities are limited and the free sample offer will end as soon as supplies run out. *See the FAQ here for evaluation boards and capacitance measurement methods.
To request evaluation samples