BB 659C E7912

Overview

The BB 659C E7912 is a silicon single varactor diode manufactured by Infineon Technologies, designed for TV and satellite tuner applications. It operates within a junction temperature range of -55°C to +150°C and utilizes the PG-SC79-2 (SOD-523) surface-mount package. Key electrical parameters include a maximum reverse voltage of 30 V, a capacitance of 2.75 pF at 28 V reverse bias measured at 1 MHz, and a capacitance ratio of 15.3 under C1/C28 conditions. The component is classified as obsolete.

Feature Summary

• Single-channel varactor configuration optimized for RF tuning circuits
• Capable of operation in high-temperature environments up to 150°C junction temperature
• Designed for integration into television and satellite receiver tuner modules

Applications

• Television tuner circuits
• Satellite receiver tuners
• RF frequency synthesis networks

Procurement Notes

This component is officially listed as obsolete or discontinued by the manufacturer. Verification of current availability requires checking authorized distributors for remaining stock or end-of-life status. Sourcing should prioritize verified legacy inventory channels rather than standard active supply chains.

Selection Notes

Engineers replacing this part must verify that substitute components meet the specific 30 V peak reverse voltage requirement and the 2.75 pF capacitance value at 28 V bias. The physical footprint compatibility with the PG-SC79-2 package is critical for existing PCB layouts. Functional equivalence in terms of capacitance ratio and quality factor should be confirmed against the original datasheet specifications.

Part Context

The BB 659C series belongs to Infineon's portfolio of silicon varactor diodes specifically engineered for broadcast and communication equipment. These devices are characterized by stable capacitance-voltage characteristics suitable for precise frequency control in analog and digital tuner architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative sourcing requires manual verification of pin-compatible and electrically equivalent varactors from other manufacturers.