KVX3901A-23-4

Overview

The KVX3901A-23-4 is a single-channel 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 parameters include a capacitance of 1.3 pF at 20 V and 1 MHz, and a Q factor of 600 at 4 V and 50 MHz. The component complies with RoHS3 standards and has an MSL rating of 1.

Feature Summary

• High Q-factor performance suitable for RF tuning applications
• Extended operating temperature range for harsh environments
• Compact surface-mount packaging for space-constrained designs

Applications

• RF circuit tuning
• Voltage-controlled oscillators
• Frequency synthesizers

Procurement Notes

Verify part authenticity through authorized Microchip distributors or certified suppliers. Confirm RoHS3 compliance and MSL level 1 status during incoming inspection. Ensure storage conditions adhere to moisture sensitivity guidelines to prevent package damage prior to reflow soldering.

Selection Notes

Select this component when a low-capacitance varactor with high Q-factor is required for RF applications. The 22 V reverse voltage rating suits moderate voltage tuning ranges. Verify that the SOT-23-3 footprint aligns with the PCB layout constraints and thermal management requirements of the target design.

Part Context

This device belongs to the KVX series of varactor diodes from Microchip Technology. It shares the same package and basic voltage specifications with variants like KVX2001 and KVX2152 but offers distinct capacitance and Q-factor characteristics optimized for specific frequency bands and tuning sensitivities.

Replacement Considerations

Direct substitutes include KVX2152-23-0 and KVX2001-23-0, provided their specific capacitance and Q-factor values meet the circuit requirements. Verify pinout compatibility and thermal performance before substitution.