Tunable Dielectric Capacitor
Dielectric Varactor
If the dielectric varactor has your interest and you would like to see a data sheet, please submit an inquiry here.
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.
| 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 |
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.
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.
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.
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.
Dielectric constants 40 to 50,000 available in three configurations for solder or epoxy die attachment.
Product Details：Single Layer Chip Capacitors [Type A]*Ranges can be dragged and selected.
Hi-K capacitors available in a 2,3 or 4 pad arrays. Sharing common backside metalization, this configuration provides space and cost savings.
Wirebondable single layer thin film resistors suitable for both AuSn and epoxy die attachment. Available in sizes from 16 x 16 mils with power handling up to 100mW.
Rectangular capacitors for applications demanding high aspect ratio caps, such as for GaN impedance matching.
*Ranges can be dragged and selected.
Integrates a resistor into the top electrode of a capacitor to achieve space-savings within highly integrated devices while contributing to improved tact time by having one less part to place.
Binary capacitors are ideal for tuning exact capacitance values for the absolute best performance.
*Ranges can be dragged and selected.
Gap capacitors eliminate the need for wire-bonds by enabling SMD type die attach processes.
*Ranges can be dragged and selected.
Ceramic Ground Blocks are customizable conductive shims ideal for application within micro-assemblies in both optical and microwave industries.
*Ranges can be dragged and selected.
| 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. |
|---|
+1-408-748-0100
Office Hours: 8:30am - 5:30pm PST
