Infineon Technologies BB814E6327GR1HTSA1

Overview

BB814E6327GR1HTSA1 from Infineon Technologies is a silicon varactor diode in SOT23 package with common-cathode dual-diode configuration, designed for FM radio tuner VCOs requiring precise capacitance tracking. It delivers 43–46.5 pF capacitance at 2 V, 19.1–22.7 pF at 8 V, 2.05–2.25 capacitance ratio, <0.18 Ω series resistance at 100 MHz, and operates from –55 °C to +125 °C.

For engineers reviewing the BB814E6327GR1HTSA1 datasheet, BB814E6327GR1HTSA1 pinout, BB814E6327GR1HTSA1 application, or BB814E6327GR1HTSA1 equivalent, key selection criteria include dual-diode matching tolerance (≤3%), low-voltage tuning performance (18 V VR max), SOT23 footprint compatibility, and RoHS-compliant Pb-free packaging for automotive radio designs.

Technical Context

This monolithic dual varactor integrates two matched silicon junction diodes on a single die with shared cathode, enabling simultaneous voltage-controlled capacitance tuning in differential or push-pull VCO topologies. Its capacitance-voltage curve is characterized at 1 MHz with tight group coding (C2V/C8V bins) and guaranteed tracking across temperature.

The device supports low-supply tuning in car radios via high CT2/CT8 ratio (min 2.05) and low IR (<200 nA at 16 V, 60 °C), while maintaining Q ≥200 at 100 MHz and 2 V bias - critical for phase noise reduction in FM front-end oscillators.

Key Specifications

Pinout & Package

SOT23-3 package with gull-wing leads, common-cathode configuration: Pin 1 = Anode 1, Pin 2 = Cathode (shared), Pin 3 = Anode 2. Standard JEDEC MO-215 outline; 1.3 mm × 2.9 mm body, 0.95 mm height, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar varactor diode applications.

Compared with BBY52-02W and SMV1232-011, BB814E6327GR1HTSA1 uniquely combines dual-monolithic construction, 43+ pF C2V, and ≤3% matching - making it optimal for automotive FM tuners demanding zero-trimmer VCO calibration and wideband coverage.

Availability

BB814E6327GR1HTSA1 is available at Aetrix Electronics and suitable for automotive infotainment systems, portable broadcast receivers, and professional two-way radio transceivers requiring stable component supply and AEC-Q200-aligned reliability.

Supply support for BB814E6327GR1HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with global R&D and manufacturing facilities.

BB814 belongs to Infineon's RF Varactor Diode product line, engineered specifically for high-reliability, temperature-stable tuning in automotive and professional radio frequency front-ends.

FAQ

What is the maximum reverse voltage rating for BB814E6327GR1HTSA1?

The absolute maximum DC reverse voltage (VR) is 18 V at TA = 25 °C, with peak reverse voltage (VRM) rated at 20 V. Exceeding 18 V continuously risks junction breakdown, especially above 85 °C ambient. Derating to 15 V is recommended for long-term reliability in automotive transient environments.

Does BB814E6327GR1HTSA1 require external matching components for dual-diode operation?

No - its monolithic common-cathode structure ensures intrinsic capacitance matching (≤3% ∆CT/CT) between anodes without external passive components. This eliminates manual trimmer capacitors and reduces layout sensitivity to parasitic coupling in FM tuner PCBs.

How does the SOT23 package affect thermal performance in high-density tuner modules?

The SOT23-3 package has a junction-to-air thermal resistance (RθJA) of 250 K/W. In typical FM tuner layouts with 25 mm² copper pour, self-heating remains below 5 °C at 1 mA reverse bias - well within the –55 °C to +125 °C operating range and sufficient for stable C(V) tracking.

Can BB814E6327GR1HTSA1 be used in 5G sub-6 GHz front-end tuning?

No - its capacitance range (19–47 pF) and Q factor (≥200 at 100 MHz) are optimized for HF/VHF/UHF bands up to 500 MHz. At 3.5 GHz, series resistance dominates and effective Q drops below 30, making it unsuitable for 5G n78/n79 filter or PA tuning applications.