BB202,135

Overview

The BB202 is a low-voltage variable capacitance diode fabricated in planar technology and encapsulated in the SOD523 ultra-small SMD plastic package. It features a very steep C/V curve with a capacitance ratio of at least 2.5 between 0.2 V and 2.3 V reverse bias. The device exhibits very low series resistance, typically 0.35 Ω at 100 MHz. Electrical characteristics specify a continuous reverse voltage of 6 V and a continuous forward current of 10 mA. Operating junction temperature ranges from -55 °C to +85 °C.

Feature Summary

• Very steep capacitance-to-voltage (C/V) curve for precise tuning
• Ultra-small SOD523 surface-mount package for space-constrained designs
• Low series resistance suitable for high-frequency applications

Applications

• Electronic tuning in FM radio receivers
• Voltage Controlled Oscillators (VCO)

Procurement Notes

Verify the specific ordering code matches the required package variant. Confirm that the component status aligns with current production requirements. Check for any updated revision history or superseding documents before finalizing procurement specifications.

Selection Notes

Select this component when a compact variable capacitance diode with a steep C/V characteristic is required. Ensure the operating voltage range stays within the specified 6 V reverse limit. Verify that the SOD523 package dimensions fit the available PCB footprint constraints.

Part Context

The BB202 belongs to NXP's portfolio of discrete semiconductor components designed for RF and analog signal processing applications. It serves as a fundamental passive-active hybrid element used primarily in frequency control circuits where miniaturization and stable capacitance variation are critical design parameters.

Replacement Considerations

Consult official NXP documentation for verified substitute part numbers. Do not assume cross-compatibility with other variable capacitance diodes without verifying pinout, package, and electrical parameter alignment.