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Product Detailed Parameters
- Description：DIODE VARACTOR 15V 20MA SC-79
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance @ Vr, F：2pF @ 6V, 50MHz
- Capacitance Ratio：3.4
- Capacitance Ratio Condition：C1/C6
- Voltage - Peak Reverse (Max)：15 V
- Diode Type：Single
- Q @ Vr, F：-
- Operating Temperature：-55°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-79, SOD-523
- Supplier Device Package：SC-79
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Overview
The SMV1234-079LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV123x series, housed in an SC-79 package with a parasitic inductance of 0.7 nH. It features a maximum reverse voltage of 15 V and a forward current rating of 20 mA. Typical capacitance values are 6.28 pF at 6 V and 7.15 pF at 1 V, yielding a capacitance ratio of 2.8 to 3.4 between 1 V and 6 V. The series resistance is typically 0.8 Ω at 3 V and 500 MHz. Operating temperature ranges from -55 °C to +125 °C.
Feature Summary
- Designed for low tuning voltage Voltage Controlled Oscillators (VCOs) and high-Q resonators in wireless systems up to frequencies exceeding 10 GHz.
- Utilizes a hyperabrupt junction profile to provide a high capacitance ratio suitable for wide tuning range applications.
- Engineered with low series resistance characteristics to minimize phase noise in oscillator circuits.
Applications
- Low tuning voltage Voltage Controlled Oscillators (VCOs)
- High-Q resonators in wireless system VCOs
- Frequency agile microstrip patch antennas
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and lead-free status via official documentation. Check for recent Product Change Notifications regarding manufacturing site updates or material changes. Ensure handling procedures adhere to ESD protection standards during assembly.
Selection Notes
Select this component when a high capacitance ratio and low series resistance are required for VCO tuning applications. Verify that the 15 V reverse voltage rating meets the circuit's peak reverse bias requirements. Consider the 0.7 nH package inductance for RF performance optimization above 10 GHz.
Part Context
The SMV1234-079LF belongs to the SMV123x family of hyperabrupt junction varactors. This series includes variants such as the SMV1231, SMV1232, SMV1233, SMV1235, SMV1236, and SMV1237, which offer different capacitance levels while maintaining similar electrical characteristics and package options.
Replacement Considerations
SMV1234-011LF
FAQ
What is the typical capacitance ratio for the SMV1234-079LF?
The typical capacitance ratio (CT @ 1V / CT @ 6V) is between 2.8 and 3.4.
What is the maximum operating temperature for this device?
The maximum operating temperature is +125 °C.
What is the package inductance value?
The package inductance (LS) is 0.7 nH.
