BB172X

Overview

The BB172X is a VHF variable capacitance diode fabricated in planar technology and encapsulated in the SOD323 (SC-76) surface-mounted package. It features excellent linearity and low series resistance, making it suitable for high-frequency applications. Key electrical characteristics include a reverse current of 10 nA at 30V and a typical diode capacitance of 2.6 pF at 28V reverse bias. The device exhibits a capacitance ratio of 15 between 1V and 28V. Limiting values specify a maximum peak reverse voltage of 35V and a junction temperature range from -55°C to +125°C.

Feature Summary

• Excellent linearity performance
• Very small SMD plastic package
• Low series resistance

Applications

• Voltage Controlled Oscillators (VCO)

Procurement Notes

Verify the specific ordering part number BB172X against the manufacturer's official documentation to ensure compatibility with the required SOD323 tape and reel packing method. Confirm that the component meets all absolute maximum rating conditions, particularly regarding peak reverse voltage and forward current limits, before finalizing procurement specifications.

Selection Notes

Select this component based on its VHF frequency capabilities and specific capacitance ratios required for tuning circuits. Ensure the design accommodates the SOD323 package dimensions and verifies thermal management within the specified junction temperature range. Evaluate the low series resistance and reverse current characteristics against circuit sensitivity requirements.

Part Context

The BB172X belongs to the BB172 product family of VHF variable capacitance diodes manufactured by NXP Semiconductors. This family utilizes planar technology to provide consistent performance in compact surface-mount packages. The BB172X specifically denotes the orderable variant packaged in reels for automated assembly processes.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided datasheet.