BBY40,215

Overview

The BBY40,215 is a silicon abrupt junction varactor diode manufactured by NXP USA Inc. in the TO-236AB (SOT-23) surface-mount package. It features a maximum reverse voltage of 30V and a typical capacitance of 26pF at zero bias. At 25V reverse bias and 1MHz frequency, the capacitance drops to 6pF, yielding a capacitance ratio of 6.5 (C3/C25). The device is designed for VHF frequency tuning applications.

Feature Summary

• Abrupt junction silicon construction optimized for high-frequency operation
• Surface-mount TO-236AB packaging for automated assembly
• High capacitance ratio for effective voltage-controlled tuning

Applications

• VHF frequency tuning circuits
• Voltage-controlled oscillator (VCO) designs
• RF filter tuning networks

Procurement Notes

Verify component status as obsolete with NXP Semiconductors. Confirm availability through authorized distributors or secondary markets. Check datasheet revisions for electrical parameter consistency. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component for VHF applications requiring abrupt junction characteristics. Evaluate the 30V reverse voltage limit against circuit operating conditions. Consider the 26pF initial capacitance and 6.5 ratio for tuning range requirements. Verify package compatibility with SOT-23 reflow processes.

Part Context

The BBY40,215 belongs to NXP's varactor diode portfolio, specifically designed for variable capacitance applications. It utilizes silicon technology with an abrupt doping profile to maximize tuning efficiency. The TO-236AB package provides a compact solution for modern surface-mount electronics.

Replacement Considerations

As the part is marked End of Life, identify cross-reference components with similar 30V ratings and comparable capacitance ratios. Verify that alternative varactors match the TO-236AB footprint and electrical specifications for direct substitution.