BBY31,215

Overview

The BBY31,215 is a silicon planar variable capacitance diode manufactured by NXP Semiconductors. Encapsulated in the SOT23 small plastic surface-mount device package, this component is designed for UHF band applications. Key electrical characteristics include a capacitance at 28 V reverse bias (C28) of 1.9 pF and a capacitance ratio of 8.3. The device utilizes planar technology to ensure stable performance in high-frequency circuits.

Feature Summary

• Excellent linearity for signal integrity
• Small plastic SMD package for compact integration

Applications

• Electronic tuning in UHF television tuners
• Voltage-controlled oscillators (VCO)

Procurement Notes

Verify the specific ordering code BBY31,215 against official NXP documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with SOT23 footprint requirements during procurement planning.

Selection Notes

Select this component when designing UHF circuits requiring precise capacitance variation with low distortion. The specified C28 value and ratio are critical for matching tuner impedance networks and oscillator frequency ranges.

Part Context

This part belongs to NXP's family of UHF variable capacitance diodes, which includes similar devices like the BB135 and BB146. These components are engineered for high-frequency tuning applications where small form factors and reliable planar technology are required.

Replacement Considerations

Check datasheets for equivalent parts such as BB135 or BB146 from NXP, ensuring their capacitance ratios and voltage ratings match the original circuit design requirements.