BB831E7904HTSA1

Overview

The BB831E7904HTSA1 is a single-junction varactor diode manufactured by Infineon Technologies, designed for high-frequency tuning applications. It is housed in a compact SOD-323 surface-mount package with dimensions of 1.7mm length, 1.25mm width, and 0.9mm height. The device supports a maximum reverse voltage of 30V and operates within a temperature range of -55°C to +125°C. Key electrical specifications include a minimum capacitance of 7.8pF and a minimum tuning ratio of 7.8, measured under test conditions from 1V to 28V. This component features two pins and is optimized for integration into tuner circuits requiring precise frequency control.

Feature Summary

• Compact SOD-323 surface-mount package suitable for space-constrained designs
• High tuning ratio capability for effective frequency modulation
• Robust thermal performance with extended operating temperature range

Applications

• Tuner circuits
• Frequency modulation systems
• RF filtering applications

Procurement Notes

Verify the complete part number including suffixes against official Infineon documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the requested variant matches the required tolerance and binning levels for your specific production line. Cross-reference the manufacturer's latest datasheet to validate current availability status and any potential obsolescence notices before finalizing procurement orders.

Selection Notes

Select this component when a low-capacitance varactor with a moderate tuning ratio is required for VCO or filter tuning. Ensure the circuit design accommodates the 30V reverse voltage limit and the 7.8pF minimum capacitance value. Verify that the SOD-323 footprint aligns with the PCB layout constraints and that the operating temperature range meets the environmental requirements of the target application.

Part Context

This part belongs to Infineon's portfolio of semiconductor discrete components, specifically varactor diodes used in radio frequency and communication equipment. The BB831 series is engineered to provide stable capacitance variation with applied voltage, supporting reliable performance in consumer electronics and industrial communication devices where size and efficiency are critical design factors.

Replacement Considerations

Consult Infineon's official cross-reference tools or distributor databases for verified equivalent parts. Ensure any substitute maintains identical pinout, package dimensions (SOD-323), and electrical characteristics such as capacitance range and reverse voltage rating to guarantee functional compatibility without redesigning the host circuit.