BB644E7904HTSA1

Overview

The BB644E7904HTSA1 is a single varactor diode manufactured by Infineon Technologies, designed for high-frequency tuning applications. It is housed in a compact SOD-323 surface-mount package with two pins and dimensions of 1.7 x 1.25 x 0.9 mm. The device features a maximum reverse voltage of 30 V and a minimum capacitance of 10 pF. It offers a minimum tuning ratio of 8.2 under test conditions ranging from 1 V to 28 V. The component operates within a temperature range of -55 °C to +150 °C, ensuring reliability in demanding electronic environments.

Feature Summary

• Single diode configuration optimized for precise frequency control
• Compact SOD-323 surface-mount package for space-constrained designs
• High thermal stability supporting operation up to 150 °C

Applications

• RF tuners
• VCOs (Voltage Controlled Oscillators)
• Frequency synthesizers

Procurement Notes

Verify the specific ordering suffix E7904HTSA1 against official Infineon documentation to confirm tape-and-reel packaging quantities and material compliance details. Ensure the part number matches the exact electrical specifications required for the target circuit design before procurement.

Selection Notes

Select this component when a low-profile SOD-323 varactor with a 30 V reverse voltage rating is required. The 10 pF minimum capacitance and 8.2 tuning ratio make it suitable for standard RF tuning ranges. Verify that the operating temperature range aligns with the system's environmental constraints.

Part Context

This part belongs to Infineon's BB6xx series of varactor diodes, which are widely used in communication equipment. The BB644 variant specifically targets applications requiring moderate capacitance values and robust performance in tuner circuits. It complements other series members like the BB639 and BB535, which offer different capacitance profiles.

Replacement Considerations

Check for direct substitutes such as the BB644W or other BB64x variants if pin compatibility and electrical parameters match. Cross-reference with manufacturer obsolescence notices to ensure long-term availability.