Datasheets Available

If the dielectric varactor has your interest and you would like to see a data sheet, please submit an inquiry here.


About Dielectric Varactors

Tecdia’s surface-mount dielectric varactors are made with a unique Tecdia proprietary voltage controllable dielectric and are designed for controlling impedance in a wide variety of applications operational up to millimeter-wave frequencies.  Some common applications for the varactor are Tunable Phase Shifters, Tunable Matching Networks, Tunable Filters, and Voltage Controlled Oscillators (VCOs).  Besides a selection of standard part numbers, we support custom varactor requests and can tailor capacitance, size, metallization, and other specifications as requested.  Please contact Tecdia for samples requests and questions regarding dielectric varactors.


Part Number Description



Varactor Specifications


Dimensions Tolerance
A 0.500 mm | 19.7 mils ±0.025 mm | 0.98 mils
B 0.250 mm | 9.8 mils ±0.025 mm | 0.98 mils
C 0.200 mm | 7.8 mils ±0.010 mm | 0.39 mils
D 0.165 mm | 6.5 mils ±0.010 mm | 0.39 mils
E 0.120 mm | 4.7 mils ±0.010 mm | 0.39 mils


Dielectric Varactor RF Simulation Models

In collaboration with Tecdia, Modelithics has added RF simulation models for Tecdia’s dielectric varactors to their vast online model database.  These models are compatible with Keysight ADS, Genesys, and Cadence AWR. The full models for the first selection of standard part numbers are available through the Modelithics Web Portal.  Please contact Tecdia for inquiries regarding dielectric varactor models.

Through the Modelithics Vendor Partner (MVP) Program, FREE 90-day trials are available for the Modelithics models for Tecdia components. For more information or to request a free trial of the Modelithics Tecdia models, visit this link here.



Application Examples


5G Hybrid Beam Forming Antenna with Analog Phase Shifting

Dielectric Varactors can be implemented in phase shifters to control the phase of individual antenna elements on an antenna array. Through phase control of each antenna element a focused signal beam can be created and maneuvered. Many applications in 5G, including beam forming, require many channels to transmit simultaneously which can cause unwanted perturbances in devices with poor linearity.  Dielectric varactors linearity, defined by the IP3 parameter, is over 1000 times better than that of varactor diodes, essentially removing noise caused by non-linearity and making Tecdia’s Varactors ideal for applications such as 5G small cell and macro cell antenna.


High Frequency and Low Phase Noise VCO

Voltage Controlled Oscillators (VCOs) are devices that utilize varactors to generate signals of a specified frequency range. The use of dielectric varactors reduces the insertion loss and therefore reduce the VCO’s overall phase noise. Also, unlike varactor diodes, dielectric varactors act as variable capacitors when biased in either direction with the capacitance shift symmetric around 0V.  This symmetry reduces overall components and simplifies circuits since the designer no longer needs to account a varactor diodes forward biased short mode.  These advantages allow for higher frequency and lower phase noise VCOs than what has been possible with varactor diodes.

Search Ceramic Products

Here our ceramic products can be searched to find a part number that satisfies your desired specifications. Select the desired product from the tabls below and parametrically search for your specifications.
Spec sheets can be downloaded from the search results.

Part Number Spec Capacitance (pF) Cap. Tol. Size (mil/mm) Size Tol. (mil/mm) Thickness (mil/mm) Thickness Tol. (mil/mm) Rated Voltage Type Temp. Coeff.

    Please fill in the required information and send.

    No products found matching the selected criteria. Please change the conditions and search again. If you would like to customize, please contact us using the form below.

    Content of inquiry

    Samplespec sheet

    Customer Information
    *All fields are required



    Office Hours: 8:30am - 5:30pm PST