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Product Detailed Parameters
- Description：DIODE VAR CAPACITANCE SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- 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 ZC931TC is a single-path varactor diode manufactured by Diodes Incorporated, designed for surface-mount applications in the SOT-23-3 package. It features a maximum peak reverse voltage of 12 V. At a reverse voltage of 4 V and frequency of 50 MHz, the device exhibits a capacitance of 4 pF and a quality factor (Q) of 300. The component is classified as a variable capacitance diode suitable for RF tuning circuits.
Feature Summary
- Single-channel varactor configuration optimized for compact surface-mount layouts
- Hyperabrupt junction characteristics enabling efficient capacitance variation with applied reverse bias
- High Q-factor performance at standard RF test frequencies to minimize signal loss
Applications
- RF oscillator tuning circuits requiring precise frequency adjustment
- Voltage-controlled oscillator (VCO) implementations in communication modules
- Frequency modulation (FM) circuitry utilizing varactor-based phase shift
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance status and check for end-of-life notifications, as the product may be discontinued. Ensure packaging specifications match design requirements before finalizing procurement orders.
Selection Notes
Select this component when a low-capacitance varactor with high Q-factor is required in an SOT-23-3 footprint. Compare against similar models like ZC930TC if different capacitance values are needed. Verify that the 12 V reverse voltage rating meets the circuit's maximum operating conditions.
Part Context
The ZC931TC belongs to the ZC93x series of varactor diodes from Diodes Incorporated. This series provides hyperabrupt junction devices tailored for RF applications. The TC suffix indicates the specific SOT-23-3 surface-mount packaging variant within the broader product family.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative varactors from the same manufacturer or other vendors based on matching electrical parameters such as capacitance, Q-factor, and package type.
