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Product Detailed Parameters
- Description：DIODE VARACTOR LV 250Q SOD-523
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance @ Vr, F：37pF @ 1.5V, 1MHz
- Capacitance Ratio：2
- Capacitance Ratio Condition：C0.5/C2.5
- Voltage - Peak Reverse (Max)：12 V
- Diode Type：1 Pair Common Cathode
- Q @ Vr, F：200 @ 0.5V, 50MHz
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-79, SOD-523
- Supplier Device Package：SOD-523
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Overview
The ZV953V2TA is a silicon hyperabrupt varactor diode designed for frequency control and filtering applications. It features closely controlled capacitance-voltage characteristics, low voltage operation, and high Q factor. The device operates with control voltages from 0.5V to 2.5V, making it suitable for 3-volt systems. Key electrical parameters include a reverse breakdown voltage of 12V, a maximum power dissipation of 250mW in the SOD523 package, and a typical reverse leakage current of 10pA at 8V. At 1MHz, the capacitance ranges from 45pF at 0.5V to 37pF at 1.5V, with a minimum Q of 200 at 50MHz.
Feature Summary
- Close tolerance C-V characteristics
- Low IR (typically 10pA)
- Excellent phase noise performance
- High Q at low voltage
Applications
- VCXO and TCXO
- Wireless communications
- Mobile radio
Procurement Notes
Verify the manufacturer origin, as the component was originally developed by Zetex Semiconductors before being acquired by Diodes Incorporated. Confirm the specific package type (SOD-523 or SOT-323) matches the design requirements. Ensure the order code suffix TA corresponds to the correct reel quantity and tape width specifications provided in the official documentation.
Selection Notes
Select this component when designing circuits requiring tight capacitance tolerance and low phase noise in miniature surface mount packages. The ZV953V2TA is optimized for 3-volt systems due to its effective tuning range between 0.5V and 2.5V. Consider the specific capacitance values at operating voltages to ensure proper frequency control within the desired bandwidth.
Part Context
The ZV953V2TA belongs to the 950 series of silicon low voltage hyperabrupt varactor diodes. This series includes variants like the ZV950V2 and ZV952V2, offering different capacitance levels while maintaining similar electrical characteristics. The product line is engineered for applications demanding precise frequency stability and low noise performance in compact electronic designs.
Replacement Considerations
The FSD273TA is a band-selected version of the dual common cathode variant ZMDC953, not a direct replacement for the single ZV953V2TA. Verify if the ZV952V2TA or ZV950V2TA can substitute based on required capacitance ratios and Q factors.
