BB201,215

Overview

The BB201,215 is a dual varactor diode manufactured by NXP USA Inc., housed in an SOT-23 (TO-236AB) surface-mount package. It features a common cathode configuration with a maximum peak reverse voltage of 15 V. The device exhibits a capacitance of 25.5 pF at 8 V and 1 MHz, with a capacitance ratio of 3.8 measured under C1/C7.5 conditions. Operating temperature ranges from -55°C to 125°C junction temperature. This component is classified as obsolete.

Feature Summary

• Dual varactor structure with common cathode topology for compact circuit integration
• High capacitance ratio enabling significant tuning range within RF applications
• Robust thermal performance supporting operation up to 125°C junction temperature

Applications

• RF tuning circuits requiring variable capacitance control
• Voltage-controlled oscillator (VCO) frequency adjustment
• RF filter tuning networks

Procurement Notes

Verify component obsolescence status prior to design finalization. Confirm availability through authorized distributors or secondary market suppliers. Ensure storage conditions align with semiconductor handling standards to prevent degradation. Validate pinout compatibility with existing PCB footprints during replacement planning.

Selection Notes

Select based on required capacitance value at specific reverse bias voltages. Compare capacitance ratios against alternative models like the BB207 if different tuning characteristics are needed. Verify package compatibility with automated assembly processes. Consider thermal limits for high-power RF environments.

Part Context

This part belongs to NXP's legacy varactor diode portfolio. It shares the SOT-23 form factor with other small-signal devices. The BB201 series offers distinct capacitance characteristics compared to variants like the BB207. These components were widely used in consumer electronics and communication equipment before discontinuation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate equivalent dual varactor diodes with matching 15V ratings and similar capacitance profiles. Verify electrical parameters and package dimensions carefully when selecting alternatives.