BB208-02,135

Overview

The BB208-02 is a planar technology variable capacitance diode housed in an SOD523 (SC-79) ultra-small surface-mount plastic package. It operates with a continuous reverse voltage of up to 10 V and features very low series resistance of 0.5 Ω maximum at 100 MHz. The device provides excellent CV linearity with a typical capacitance ratio of 5.2 between 1 V and 7.5 V reverse bias. Capacitance values range from 23.2 pF at 1 V down to 4.9 pF at 7.5 V, supporting stable tuning performance across varying voltage conditions.

Feature Summary

• Ultra-small SMD plastic packaging for compact circuit integration
• Very low series resistance for efficient signal transmission
• Excellent CV linearity ensuring consistent tuning characteristics
• High capacitance ratio for wide frequency adjustment range

Applications

• Voltage Controlled Oscillators (VCO)
• Voltage Controlled Crystal Oscillators (VCXO)
• Temperature Controlled Crystal Oscillators (TCXO)

Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm package type and reel specifications. Ensure the component status matches current production requirements. Confirm that the marking code aligns with the intended assembly process. Check for any recent revision updates that may affect pinning or electrical parameters before finalizing procurement orders.

Selection Notes

Select the BB208-02 when an ultra-small SOD523 package is required for space-constrained designs. Evaluate the capacitance ratio and series resistance against the specific oscillator tuning requirements. Ensure the operating junction temperature remains within the specified -55 °C to +125 °C range. Verify compatibility with the target PCB layout dimensions for the SOD523 footprint.

Part Context

The BB208-02 belongs to NXP's family of low-voltage variable capacitance diodes, designed primarily for RF tuning applications. It shares functional similarities with the BB208-03 but utilizes a different package size. This component supports general-purpose oscillation circuits where small form factor and reliable capacitance variation are critical design constraints.

Replacement Considerations

The BB208-03 serves as a package variant using the SOD323 footprint. Other similar devices include the BB142 and BB156, though these utilize different packages and may require schematic adjustments.