BB639CE7908HTSA1

Overview

The BB639CE7908HTSA1 is a silicon varactor diode manufactured by Infineon Technologies, designed for UHF and VHF tuner applications. It features a single-diode configuration housed in an SOD-323 surface-mount package with two pins. The device supports a maximum reverse voltage of 30V and operates within a temperature range of -55°C to +150°C. Key electrical parameters include a minimum tuning ratio of 13.5 (tested at 1V to 28V) and a capacitance range spanning from approximately 2.85pF to 36pF. The component is qualified under the AEC-Q100 standard for automotive reliability.

Feature Summary

• AEC-Q100 qualified for automotive powertrain and body electronics environments
• Optimized for high linearity in UHF and VHF tuner circuits
• Compact SOD-323 surface-mount packaging for space-constrained designs

Applications

• UHF and VHF tuner circuits
• Automotive radio frequency tuning systems
• Frequency synthesizers requiring stable variable capacitance

Procurement Notes

Verify the specific suffix HTSA1 against official Infineon documentation to confirm tape-and-reel packaging specifications. Ensure the ordering code matches the exact capacitance tolerance and grading required for the target application. Cross-reference the part number with current lifecycle status reports to confirm availability before finalizing procurement plans.

Selection Notes

Select this component when a high-tuning-ratio varactor is required for VHF/UHF bands. Verify that the 30V reverse voltage rating exceeds the maximum expected bias voltage in the circuit. Confirm that the SOD-323 footprint aligns with the PCB layout constraints and thermal management requirements of the design.

Part Context

This part belongs to the BB639 family of silicon varactor diodes, which are widely used in RF tuning applications. The BB639 series is distinguished by its high tuning ratio and low series resistance, making it suitable for precision frequency control. The CE7908 variant represents a specific manufacturing lot or grading bin within this established product line.

Replacement Considerations

Direct replacements may include other parts from the BB639 family, such as BB639E7904HTSA1, provided they meet the same electrical and mechanical specifications. Verify compatibility with existing PCB footprints and ensure equivalent AEC-Q100 qualification if used in automotive contexts.