BB68902VH7908XTSA1

Overview

The BB68902VH7908XTSA1 is a silicon tuning diode from the BB689 series, manufactured by Infineon Technologies. It features a single-diode configuration housed in an SCD-80 surface-mount package with a maximum reverse voltage of 30 V and peak reverse voltage of 35 V. The device exhibits a typical capacitance ratio of 23.2 at 1 MHz (VR = 1 V to 28 V). Electrical characteristics include a low series resistance of 0.85 Ω at 470 MHz and a series inductance of 0.6 nH. Operating temperature ranges from -55°C to 150°C.

Feature Summary

• Designed for VHF TV tuner applications
• Very high capacitance ratio for precise tuning
• Low series resistance and inductance
• Excellent uniformity and matching due to 'in-line' assembly

Applications

• VHF TV tuners

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm the specific ordering suffix matches the required package and marking specifications. Check current availability status as discrete semiconductor components may undergo lifecycle changes. Ensure storage conditions adhere to moisture sensitivity level requirements before soldering.

Selection Notes

Select this component when designing circuits requiring high capacitance ratios for VHF frequency bands. The SCD-80 package suits compact surface-mount designs. Evaluate thermal management needs against the 150°C junction temperature limit. Consider the low series resistance for minimizing insertion loss in RF signal paths.

Part Context

This part belongs to the BB689 family of silicon tuning diodes. Variants within the series differ primarily by package type, such as SOD323 or SC79, and specific electrical tolerances. The BB689 series is engineered for consistent performance in analog tuning applications across various consumer electronics.

Replacement Considerations

Cross-reference with other BB689 variants like BB689 or BB669 if package compatibility allows. Verify that substitute parts meet the same capacitance ratio and reverse voltage ratings. Ensure pinout and marking layouts are compatible with existing PCB footprints.