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Product Detailed Parameters
- Description：DIODE VAR CAP 14.5PF 1A SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance @ Vr, F：4pF @ 4V, 50MHz
- Capacitance Ratio：-
- Capacitance Ratio Condition：-
- Voltage - Peak Reverse (Max)：12 V
- Diode Type：Single
- Q @ Vr, F：300 @ 4V, 50MHz
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The ZC931TA is a silicon hyperabrupt varactor diode from the ZC930, ZMV930, and ZV931 series, manufactured by Diodes Incorporated. It features closely controlled capacitance-voltage characteristics and high quality factor (Q). The device supports octave tuning from 0 to 6V with low reverse current, ensuring excellent phase noise performance. Electrical specifications include a maximum reverse voltage of 12V and a typical leakage current of 200pA. Capacitance values range from 4.00pF to 7.80pF at 4V reverse bias, with a minimum Q of 300 at 50MHz. It is available in miniature surface mount packages including SOT-23, SOD-323, and SOD-523.
Feature Summary
- Close tolerance C-V characteristics for precise frequency control
- Octave tuning capability across a wide voltage range
- Low reverse current ensures very low phase noise performance
- High Q factor for efficient filtering applications
Applications
- VCXO and TCXO designs
- Wireless communications systems
- Mobile radio equipment
Procurement Notes
Verify the specific package variant required, as the base part number covers multiple configurations. Confirm the order suffix matches the desired reel size, such as TA for 7-inch reels or TC for 13-inch reels. Ensure compliance with RoHS standards if applicable to the manufacturing batch. Cross-reference the datasheet revision date to confirm the latest electrical parameters are utilized in the design.
Selection Notes
Select this component when designing circuits requiring stable frequency control with minimal phase noise. The hyperabrupt junction profile allows for wider tuning ranges compared to standard abrupt varactors. Consider the power dissipation limits based on the chosen package type during thermal analysis. Verify that the operating voltage remains within the specified 12V reverse breakdown limit.
Part Context
This component belongs to the ZC930, ZMV930, and ZV931 series of silicon varactor diodes. The series offers various capacitance options tailored for different frequency control needs. The ZC931TA specifically provides mid-range capacitance values suitable for general-purpose RF tuning applications in compact electronic devices.
Replacement Considerations
Direct substitutes within the same series include ZC930TA and ZC932TA, though their capacitance values differ. Equivalent parts from other manufacturers must match the 12V rating and SOT-23/SOD-323/SOD-523 footprint.
