BB181,115

Overview

The BB181,115 is a VHF variable capacitance diode fabricated in planar technology and encapsulated in the SOD523 (SC-79) ultra-small plastic surface-mounted device package. It features excellent linearity for precise tuning applications. Key electrical characteristics include a maximum reverse voltage of 30 V and a forward current rating of 20 mA. At 0.5 V reverse bias, the typical capacitance is 8 pF with a maximum of 17 pF, while at 28 V, it drops to approximately 1 pF. The capacitance ratio Cd(0V5)/Cd(28V) ranges from 12 to 16. The device operates within a junction temperature range of -55 °C to +150 °C.

Feature Summary

• Excellent linearity for accurate electronic tuning
• Ultra-small plastic SMD package for space-constrained designs

Applications

• Electronic tuning in satellite tuners
• Tunable coupling circuits
• Voltage Controlled Oscillators (VCO)

Procurement Notes

Verify component authenticity through authorized NXP channels or certified distributors. Confirm the specific ordering suffix matches project requirements. Check current product status as availability may vary. Ensure storage conditions remain within specified limits to maintain reliability. Validate datasheet revisions before finalizing design specifications.

Selection Notes

Select this component for VHF frequency applications requiring compact form factors. Evaluate capacitance ratios against circuit tuning range requirements. Consider thermal management capabilities given the wide operating temperature range. Verify package compatibility with existing PCB footprint constraints. Assess linearity performance needs for signal integrity in oscillator designs.

Part Context

The BB181 belongs to NXP's portfolio of VHF variable capacitance diodes designed for high-frequency tuning applications. It utilizes planar technology to ensure consistent performance across manufacturing batches. The SC-79 package allows for automated surface-mount assembly processes. This component supports designs requiring precise voltage-controlled capacitance adjustments in RF circuits.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.