Infineon Technologies BFS 466L6 E6327

Overview

BFS466L6 from Infineon Technologies is an NPN silicon RF twin transistor in a TSLP-6-1 leadless package, integrating two matched RF transistors (TR1: BFR460L3-equivalent, TR2: BFR360L3-equivalent) for VCO modules and low-noise amplifiers. It delivers 1.1 dB noise figure at 1.8 GHz (TR1), 1.0 dB (TR2), 17 dB max available gain at 1.8 GHz (TR1), and supports 50 mA/35 mA collector currents respectively.

For engineers reviewing the BFS466L6 datasheet, BFS466L6 pinout, BFS466L6 application, or BFS466L6 equivalent, key selection criteria include dual-transistor integration in ultra-compact 1.2 mm × 0.8 mm TSLP-6-1, AEC-Q101 qualification, HBM ESD >1500 V (TR1), and verified RF performance up to 3 GHz with defined S-parameter-based gain and IP3 metrics.

Technical Context

This dual-transistor device enables compact, high-frequency signal generation and amplification in space-constrained RF front-ends. TR1 operates at higher current (50 mA) and lower noise (1.1 dB @ 1.8 GHz), while TR2 provides complementary biasing and gain staging (35 mA, 1.0 dB NF), both sharing common thermal management via the TSLP-6-1 solder-pad layout.

The integrated structure eliminates discrete matching and parasitic variation between transistors, supporting stable oscillator tuning and cascaded LNA stages. Verified AC characteristics include f_T = 16 GHz (TR1) and 11 GHz (TR2), C_cb ≤ 0.45 pF (TR1), and third-order intercept point IP3 = 28 dBm (TR1) under 50 Ω terminations at 1.8 GHz.

Key Specifications

Pinout & Package

Package: TSLP-6-1 - ultra-compact, leadless, thermally enhanced surface-mount package with exposed thermal pad (bottom side), 0.4 mm pitch, 1.2 mm × 0.8 mm footprint, RoHS-compliant matte tin plating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-NPN RF transistor applications.

Compared with BFS466L6, BFS481E6327HTSA1 offers superior single-transistor noise but sacrifices integration and thermal tracking, while BFS460L6E6327HTSA1 provides symmetry at the cost of optimized TR2 noise performance-making BFS466L6 uniquely suited for heterogeneous dual-role RF functions.

Availability

BFS466L6 is available at Aetrix Electronics and suitable for GNSS front-end LNAs, VCO tuning buffers, ISM band transmitter drivers, and automotive radar IF amplifiers requiring stable component supply across industrial and automotive production cycles.

Supply support for BFS466L6 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, automotive, and security ICs, with global R&D and manufacturing infrastructure.

The BFS series targets high-frequency analog signal conditioning in wireless communication systems, emphasizing miniaturization, noise performance, and AEC-Q101 reliability for RF front-end integration.

FAQ

What is the maximum operating frequency supported by BFS466L6?

The BFS466L6 supports verified RF operation up to 3 GHz, with TR1 delivering 14.5 dB transducer gain and TR2 providing 13.5 dB at that frequency under 50 Ω conditions. Its transition frequencies (f_T = 16 GHz for TR1, 11 GHz for TR2) provide design margin for stable small-signal amplification and oscillation in sub-6 GHz bands including LTE, Wi-Fi, and GNSS.

How does the dual-transistor architecture improve VCO phase noise?

The monolithic integration of TR1 and TR2 in the BFS466L6 minimizes inter-die thermal and parasitic mismatches that cause frequency drift and phase noise degradation. TR1 serves as the active resonator while TR2 isolates the output load, reducing pulling effects-verified by measured 1.1 dB NF at 1.8 GHz and low C_cb (≤0.45 pF), directly improving close-in phase noise performance.

Is BFS466L6 compatible with lead-free reflow profiles?

Yes, BFS466L6 uses a RoHS-compliant matte tin finish and is qualified for standard lead-free reflow profiles with peak temperatures up to 260 °C. The TSLP-6-1 package's thermal resistance (R_thJS ≤ 230 K/W) and 0.4 mm pitch allow reliable solder joint formation using IPC-J-STD-020-compliant ramp rates and soak times on standard FR4 PCBs.

Can TR1 and TR2 be biased independently?

Yes-TR1 (pins 1/C1, 2/E1, 6/B1) and TR2 (pins 3/C2, 4/B2, 5/E2) have fully separate collector, base, and emitter terminals, enabling independent DC bias networks, different quiescent currents (50 mA vs. 35 mA), and distinct RF matching. This supports asymmetric configurations such as cascode LNA (TR1) with active bias (TR2) or push-pull oscillator cores.