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Product Detailed Parameters
- Description：DIODE VAR CAP 14.5PF 12V SOD-323
- 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：SC-76, SOD-323
- Supplier Device Package：SOD-323
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Overview
The ZMV931TA is a silicon hyperabrupt varactor diode manufactured by Diodes Incorporated, designed for frequency control and filtering applications. 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 reverse leakage current of 200pA. Capacitance values range from 4.00pF to 7.80pF depending on the applied reverse bias voltage.
Feature Summary
- Close tolerance C-V characteristics
- Octave tuning capability from 0 to 6V
- Low reverse current for reduced phase noise
- High Q factor
Applications
- VCXO and TCXO
- Wireless communications
- Pagers
- Mobile radio
Procurement Notes
Verify the manufacturer origin as Diodes Incorporated or its predecessor Zetex Semiconductors plc. Confirm the package type matches SOT-23, SOD-323, or SOD-523 variants. Ensure the ordering suffix TA corresponds to the 7-inch reel specification. Check RoHS compliance status against the specific manufacturing date code.
Selection Notes
Select based on required capacitance range at specific bias voltages. Verify the minimum Q value meets circuit requirements at the operating frequency. Consider power dissipation limits relative to the chosen surface mount package. Evaluate temperature coefficient stability for precision tuning applications.
Part Context
This component belongs to the ZC930, ZMV930, and ZV931 series of silicon hyperabrupt varactor diodes. These devices are engineered for miniature surface mount packaging options including SOT-23, SOD-323, and SOD-523. The series provides consistent electrical performance across different form factors for compact electronic designs.
Replacement Considerations
Direct substitutes within the same series include ZC931TA and ZV931V2TA. Cross-reference capacitance tolerances and Q factors when evaluating alternative hyperabrupt varactor diodes from other manufacturers.
