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Product Detailed Parameters
- Description：SI TVAR NON HERMETIC PLASTIC SMT
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Capacitance @ Vr, F：32pF @ 3V, 1MHz
- Capacitance Ratio：-
- Capacitance Ratio Condition：-
- Voltage - Peak Reverse (Max)：27 V
- Diode Type：Single
- Q @ Vr, F：500 @ 4V, 50MHz
- Operating Temperature：-55°C ~ 125°C
- 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 KVX3901A-23-0 is a single-path varactor diode manufactured by Microchip Technology, designed for surface-mount applications in the SOT-23-3 package. It features a maximum peak reverse voltage of 22 V and operates within a temperature range of -55°C to +125°C. Key electrical specifications include a capacitance of 0.4 pF at 20 V and 1 MHz, with a quality factor of 600 measured at 4 V and 50 MHz. The component complies with RoHS3 standards and has a moisture sensitivity level of 1.
Feature Summary
- High Q-factor performance suitable for RF tuning applications
- Wide operating temperature range for industrial environments
- Compact SOT-23-3 surface mount packaging
Applications
- RF filter tuning circuits
- Voltage-controlled oscillator (VCO) frequency adjustment
- Impedance matching networks in wireless communication devices
Procurement Notes
Verify the specific suffix '23-0' against the manufacturer's official datasheet KVX2001-KVX3901A to confirm package and tape/reel specifications. Ensure compliance with RoHS3 requirements if restricted substances are mandated. Check current availability status as distribution channels may list obsolete or inactive variants under similar part numbers.
Selection Notes
Select this component when a low capacitance value near 0.4 pF is required at high reverse bias voltages. The high Q-factor at 50 MHz makes it appropriate for narrowband RF applications. Compare against the KVX2001 series if higher capacitance values around 22 pF are needed instead.
Part Context
This part belongs to the KVX2001-KVX3901A family of varactor diodes from Microchip Technology. These components are engineered for variable capacitance control in radio frequency circuits. The KVX3901A variant specifically offers lower capacitance compared to earlier models in the series, catering to higher frequency tuning requirements.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the official Microchip datasheet for potential cross-references or contact technical support for approved alternatives.
