BB 689 E7908

Overview

The BB 689 E7908 is a silicon varactor diode manufactured by Infineon Technologies, designed for surface-mount applications in the SCD-80-2 package. It operates with a maximum reverse voltage of 30 V and exhibits a capacitance of 51 pF. The device supports a minimum tuning ratio of 18 under test conditions of 1 V to 28 V. It functions reliably within a temperature range from -55 °C to +150 °C. This single-configuration component is classified under Varicap Diodes and is intended for electronic tuning circuits requiring stable variable capacitance characteristics.

Feature Summary

• Utilizes silicon technology for reliable variable capacitance performance
• Designed for surface-mount installation in compact SCD-80-2 packages
• Supports wide operating temperature ranges suitable for demanding environments

Applications

• Electronic tuning circuits
• Voltage-controlled oscillator (VCO) designs
• Frequency modulation modules

Procurement Notes

Verify current availability status as this component may be discontinued or subject to limited supply constraints. Confirm package integrity and datasheet revisions before integration. Ensure compliance with RoHS directives and check for specific handling requirements during storage and assembly processes to maintain device reliability.

Selection Notes

Select this component when a 30 V reverse voltage rating and 51 pF baseline capacitance are required. Consider the SCD-80-2 footprint for PCB layout compatibility. Evaluate the 18 tuning ratio against circuit bandwidth needs. Verify thermal management capabilities given the high maximum junction temperature specification for the target application environment.

Part Context

This part belongs to the BB 689 series of varactor diodes from Infineon Technologies. It shares the core BB 689 electrical architecture but differs in packaging and suffix specifications. The E7908 designation indicates specific manufacturing and packaging attributes distinct from other variants like the BB 689 H7908 or BB 689 E7903.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires consulting official Infineon replacement guides or distributor-specific equivalence lists.