BB659C02VH7912XTSA1

Overview

The BB659C02VH7912XTSA1 is a silicon variable capacitance diode designed for tuning extended frequency bands in VHF TV and VTR tuners. It features a single-diode configuration within an SC-79 (SOD-523) package. Key electrical parameters include a maximum reverse voltage of 30 V, peak reverse voltage of 35 V, and forward current of 20 mA. Capacitance values range from approximately 2.4 pF to 36.5 pF depending on the applied reverse bias voltage. The device exhibits a typical capacitance ratio of 15.3 at 1 MHz and maintains low series resistance of 0.6 Ω and series inductance of 0.6 nH.

Feature Summary

• High capacitance ratio for effective frequency band tuning
• Low series inductance and resistance for high-frequency performance
• Excellent uniformity and matching due to in-line assembly procedure

Applications

• Tuning of extended frequency bands in VHF TV tuners
• Tuning circuits in VTR tuners

Procurement Notes

Verify component authenticity by checking the marking code against the datasheet specifications. Confirm the package type matches the required SC-79 footprint. Ensure the operating temperature range aligns with system requirements, as the device supports -55°C to 150°C. Cross-reference the RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a single-diode varactor with low parasitic inductance is required for VHF applications. Compare the capacitance ratio and series resistance against circuit simulation models to ensure adequate tuning range. Verify that the maximum reverse voltage rating accommodates the peak voltages present in the tuner circuit without breakdown.

Part Context

This part belongs to the BB659C series of silicon variable capacitance diodes manufactured by Infineon Technologies. It shares design characteristics with the BB639C but utilizes a different package format. The series is specifically engineered for consumer electronics requiring precise frequency control in television and video recording equipment.

Replacement Considerations

Check for direct replacements within the BB659C family or equivalent varactors from other manufacturers. Ensure substitute components match the SC-79 package dimensions and pinout. Verify that the replacement meets the same capacitance ratio and series resistance specifications for identical circuit performance.