BB689H7902XTSA1

Overview

The BB689H7902XTSA1 is a single-channel varactor diode manufactured by Infineon Technologies, designed for surface-mount applications in the SCD-80 package. It features a peak reverse voltage rating of 30 V and operates within a junction temperature range of -55°C to 150°C. The device exhibits a capacitance of 2.9 pF at 28 V and 1 MHz, with a capacitance ratio of 23.2 under C1/C28 conditions. Classified as obsolete, this component serves as a variable capacitor for RF tuning circuits requiring precise voltage-controlled reactance adjustments.

Feature Summary

• Single-channel varactor configuration for voltage-controlled capacitance adjustment
• Surface-mount construction utilizing SCD-80 packaging for compact integration
• Wide operating temperature range supporting -55°C to 150°C junction temperatures

Applications

• RF tuning circuits requiring variable reactance
• Voltage-controlled oscillator (VCO) frequency adjustment
• Impedance matching networks in radio frequency systems

Procurement Notes

Verify component obsolescence status prior to procurement planning. Confirm availability through authorized distributors or secondary market suppliers. Ensure storage conditions align with moisture sensitivity requirements. Validate package integrity upon receipt to prevent handling damage. Cross-reference datasheet revisions to confirm parameter consistency with design specifications.

Selection Notes

Evaluate capacitance variation against voltage control requirements for target application. Assess thermal management capabilities given the wide operating temperature range. Verify compatibility with existing PCB footprint standards for SCD-80 packages. Consider lifetime reliability metrics due to obsolete product status. Compare performance characteristics with alternative active components if redesign is feasible.

Part Context

This component belongs to the BB689 series of varactor diodes from Infineon Technologies. The series provides single-channel variable capacitance solutions for RF applications. The BB689H7902XTSA1 variant specifically utilizes the SCD-80 surface-mount package. It represents a specialized discrete semiconductor device for voltage-controlled tuning functions.

Replacement Considerations

No public confirmed substitute part numbers are available. Designers should evaluate equivalent varactor diodes with similar capacitance ratios and voltage ratings. Package compatibility must be verified when selecting alternatives. Consult manufacturer documentation for cross-reference recommendations.