Infineon Technologies BBY5802LE6327

Overview

BBY5802LE6327 from Infineon Technologies is a hyperabrupt silicon tuning diode optimized for voltage-controlled oscillators (VCOs) in mobile communications equipment, featuring 17.5–19.3 pF capacitance at 1 V reverse bias, 0.25 Ω typical series resistance at 470 MHz, and a capacitance ratio CT1/CT4 of 2.7–3.5. It operates from −55 °C to +150 °C and is RoHS-compliant in SC79 package.

For engineers reviewing the BBY5802LE6327 datasheet, BBY5802LE6327 pinout, BBY5802LE6327 application, or BBY5802LE6327 equivalent, key selection criteria include its low-tuning-voltage operation (VR ≤ 10 V), high Q factor enabled by low rS, tight capacitance spread, and qualification per AEC-Q101 for automotive timing modules.

Technical Context

This hyperabrupt junction varactor diode delivers nonlinear C–V characteristics engineered to linearize oscillator frequency vs. control voltage response in VCO designs. Its low series resistance (≤0.25 Ω) and high Q (>100 at 470 MHz, VR = 1 V) directly support stable phase noise performance in RF synthesizers.

The device exhibits a temperature coefficient of capacitance (TCC) ranging from −4×10⁻³ to +1×10⁻³ /°C across 0–4 V bias, enabling predictable drift compensation in TCXO and VCXO reference loops where thermal stability of tuning slope is critical.

Key Specifications

Pinout & Package

BBY5802LE6327 is housed in the SC79 (SOD-523) leadless surface-mount package: 1.2 mm × 0.8 mm × 0.5 mm, single anode–cathode configuration with cathode marked by laser dot on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-controlled tuning applications.

Compared with BBY5802LE6327, BBY5803WE6327 trades package size for slightly higher C and less thermal stability, while BBY5806WE6327 sacrifices absolute capacitance for wider ratio and improved high-frequency linearity-making each optimal for distinct VCO architecture constraints.

Availability

BBY5802LE6327 is available at Aetrix Electronics and suitable for mobile handset VCOs, automotive TCXOs, and industrial wireless sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BBY5802LE6327 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with leadership in high-reliability discrete components for mission-critical systems.

BBY5802LE6327 belongs to Infineon's BBY58 hyperabrupt tuning diode product line, designed specifically for low-voltage, high-linearity frequency control in compact RF modules and automotive timing subsystems.

FAQ

What is the maximum reverse voltage rating for BBY5802LE6327?

The absolute maximum reverse voltage (VR) is 10 V at TA = 25 °C. Exceeding this value risks junction breakdown and irreversible capacitance drift. Derating is required above 25 °C per the datasheet's thermal resistance curve, with VR reduced to 8.5 V at 125 °C ambient.

Does BBY5802LE6327 require a series current-limiting resistor in VCO bias networks?

No external series resistor is required for biasing, as the device draws only ≤100 nA leakage current at 8 V and 85 °C. However, a 10–100 kΩ resistor is recommended between the tuning voltage source and cathode to suppress RF feedback and improve loop stability in high-gain VCOs.

How does the SC79 package affect RF performance compared to SOT323?

The SC79 package reduces parasitic inductance by ~0.15 nH versus SOT323 due to shorter internal leads and symmetric pad geometry, improving Q above 1 GHz. Its smaller footprint also minimizes stray capacitance to adjacent traces, making it preferable for dense 2.4 GHz+ layouts despite lacking explicit pin 1 marking.

Is BBY5802LE6327 qualified for use in safety-critical automotive applications?

Yes - BBY5802LE6327 is fully qualified to AEC-Q101 Rev D for stress tests including HTGB, HTRB, and temperature cycling. It is approved for use in ASIL-B timing subsystems such as infotainment SoC clocks and ADAS radar reference oscillators, with full traceability and lot-level test reports available.