BB131

Overview

The BB131 is a single-channel varactor diode manufactured by NXP USA Inc., designed for surface-mount applications in the SOD-323 package. It features a maximum peak reverse voltage of 30 V and operates within a junction temperature range of -55°C to 125°C. The device exhibits a capacitance of 1.055 pF at 28 V reverse bias and 1 MHz frequency, with a capacitance ratio of 16.0 measured between 0.5 V and 28 V. Classified as active and RoHS compliant, it serves as a discrete semiconductor component for variable capacitance requirements.

Feature Summary

• Single-channel varactor configuration for precise tuning applications
• Surface-mount construction utilizing the compact SOD-323 package
• Capacitance ratio of 16.0 enables significant tuning range across voltage levels

Applications

• RF circuit tuning and matching networks
• Voltage-controlled oscillator (VCO) implementations
• Frequency modulation circuits

Procurement Notes

Verify the specific ordering code against the manufacturer's current catalog to ensure compatibility with design specifications. Confirm that the SOD-323 package dimensions align with the printed circuit board layout constraints. Check for any updated material declarations or environmental compliance certificates required for the target market regulations before finalizing procurement plans.

Selection Notes

Select this component when a single varactor with a 30 V reverse voltage rating is required in a small surface-mount footprint. Ensure the operating frequency and required capacitance variation match the specified 1.055 pF value at 28 V. Consider the thermal limits defined by the -55°C to 125°C junction temperature range for the intended environment.

Part Context

This component belongs to the category of discrete semiconductor diodes, specifically varactors or variable capacitors. It is distinct from integrated circuits like the Analog Front Ends or Microcontrollers listed in broader product families. Its function is limited to providing voltage-dependent capacitance rather than signal processing or power management.

Replacement Considerations

Consult official substitution guides for equivalent single-channel varactors in SOD-323 packages with comparable 30 V ratings and capacitance ratios. Verify pinout compatibility and electrical parameter overlaps before implementing any alternative part numbers.