BB 689-02V E7908

Overview

The BB 689-02V E7908 is a silicon tuning diode from the BB689 series, manufactured by Infineon Technologies. It features a single configuration housed in an SC79 surface-mount package with a typical series inductance of 0.6 nH. The device supports a maximum reverse voltage of 30 V and a peak reverse voltage of 35 V. Electrical characteristics include a capacitance range of 2.5 pF to 51 pF at 1 MHz, a minimum capacitance ratio of 18, and a series resistance of 1.2 Ω maximum at 470 MHz. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Designed for VHF TV tuner applications
• Provides very high capacitance ratio
• Features low series resistance
• Ensures excellent uniformity and matching due to 'in-line' matching assembly procedure

Applications

• VHF TV tuners

Procurement Notes

Verify component authenticity through authorized Infineon channels or certified distributors. Confirm RoHS compliance status and check for end-of-life notices, as this specific variant may be discontinued. Ensure packaging specifications match design requirements before finalizing orders.

Selection Notes

Select based on required capacitance tuning range and operating frequency. Verify that the SC79 package dimensions fit the PCB layout constraints. Consider thermal management capabilities within the specified -55°C to +150°C operating range for the target environment.

Part Context

This component belongs to the BB669/BB689 series of silicon tuning diodes. It shares core electrical characteristics with variants like BB689 and BB669 but differs in physical packaging (SC79 vs SCD80/SOD323) and associated parasitic parameters such as series inductance.

Replacement Considerations

Direct replacements include BB689 (SCD80 package) and BB669 (SOD323 package). Verify pin compatibility and package footprint differences when substituting.