Infineon Technologies BFR93AWH6327XTSA1

Overview

BFR93AWH6327XTSA1 from Infineon Technologies is a low-noise silicon bipolar RF transistor optimized for amplifier and oscillator stages up to 2 GHz, with verified f_T ≥ 4.5 GHz, NF_min = 1.5 dB at 900 MHz, and P-1dB = 6 dBm at 0.9 GHz. It operates at I_C = 5–30 mA, V_CE = 8 V, and is qualified per AEC-Q101 for automotive-grade reliability.

For engineers reviewing the BFR93AWH6327XTSA1 datasheet, BFR93AWH6327XTSA1 pinout, BFR93AWH6327XTSA1 application, or BFR93AWH6327XTSA1 equivalent, key selection criteria include its SOT323 package, 0.58 pF C_cb, 15.5 dB G_ma at 900 MHz, IP3 = 15 dBm, and RoHS/halogen-free compliance with visible leads.

Technical Context

This NPN RF transistor employs epitaxial base technology for high f_T and low noise figure. Its DC current gain h_FE ranges 70–140 at I_C = 30 mA/V_CE = 8 V, supporting stable small-signal amplification in narrowband front-end designs.

Thermal performance is defined by R_thJS = 140 K/W (junction-to-soldering point), with permissible pulse operation governed by duty cycle and pulse width per AN077. ESD sensitivity requires handling per Class 1B (≥2 kV HBM) protocols.

Key Specifications

Pinout & Package

Package: SOT323 - Surface-mount plastic package with visible leads, footprint compatible with JEDEC TO-236AB, thermal resistance R_thJS = 140 K/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise RF transistor applications.

Compared with BFR93AWH6327XTSA1, BFP181W delivers superior noise and bandwidth in a larger footprint, while MRF901 trades performance for cost and legacy compatibility-selection depends on target frequency, noise floor, and board space constraints.

Availability

BFR93AWH6327XTSA1 is available at Aetrix Electronics and suitable for automotive telematics modules, cellular infrastructure LNAs, GPS/GNSS receivers, and ISM-band oscillator designs requiring stable component supply and AEC-Q101 traceability.

Supply support for BFR93AWH6327XTSA1 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, automotive ICs, and RF components, with global R&D and manufacturing facilities.

The BFR93AW series belongs to Infineon's discrete RF transistor portfolio, engineered for high-frequency analog signal conditioning in automotive, industrial, and wireless infrastructure applications where low noise, linearity, and reliability are critical.

FAQ

What is the maximum recommended DC bias for reliable continuous operation?

The absolute maximum collector current is 90 mA, but the datasheet specifies optimal RF performance at I_C = 5–30 mA with V_CE = 8 V. For continuous operation, keep junction temperature below 150 °C using R_thJS = 140 K/W and ambient ≤ 85 °C; derate P_tot linearly above T_S = 108 °C.

Is BFR93AWH6327XTSA1 suitable for 5G sub-6 GHz front-ends?

No-it is not optimized for 3.5 GHz or 4.9 GHz 5G bands. Its f_T and G_ma roll off significantly above 2 GHz; measured |S21|² drops to 7.5 dB at 1.8 GHz and is not characterized beyond 2 GHz. Use Infineon's BFP740 or BFP840 for 3.5 GHz 5G FR1 applications.

How does the SOT323 package affect RF matching network design?

The SOT323's short lead length and defined pin geometry minimize parasitic inductance (<0.3 nH/pin), enabling accurate modeling of C_cb, C_ce, and C_eb in EM simulators. Layout must maintain coplanar ground beneath the package and use microstrip transitions no longer than 1 mm to preserve 50 Ω integrity up to 2 GHz.

Does this part require external bias stabilization for temperature drift?

Yes-h_FE varies with temperature and V_CE. At I_C = 30 mA, h_FE shifts ±15% over –40 to +125 °C. Use emitter degeneration (e.g., 10–22 Ω) or voltage-divider bias with bypassed base node to maintain stable Q-point in automotive environments.