Infineon Technologies BFR 193W E6327

Overview

BFR193W E6327 from Infineon Technologies is a low-noise silicon bipolar RF transistor optimized for high-gain, broadband amplification up to 2 GHz, with f_T = 8 GHz, NF_min = 1 dB at 900 MHz, and P-1dB = 13 dBm at 900 MHz. It operates at V_CE = 8 V, I_C = 30 mA, and is housed in an RoHS-compliant SOT323 package for compact RF front-end stages in cellular infrastructure and wireless receivers.

For engineers reviewing the BFR193W E6327 datasheet, BFR193W E6327 pinout, BFR193W E6327 application, or BFR193W E6327 equivalent, key selection criteria include verified noise figure at 900 MHz, transducer gain (13.5 dB), third-order intercept point (IP3 = 30 dBm), thermal resistance (R_thJS = 150 K/W), and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

This NPN RF transistor uses epitaxial base technology to achieve high transition frequency and low minimum noise figure. Its f_T of 8 GHz and C_cb of 0.74 pF (typ.) support stable wideband gain up to 2 GHz under 50 Ω source/load conditions.

The device is characterized with pulsed DC measurements to minimize self-heating effects, and its noise performance is specified at Z_S = Z_Sopt, confirming suitability for impedance-matched LNA designs. Thermal derating follows a defined P_tot(T_S) curve, with full 580 mW dissipation only at T_S ≤ 63 °C.

Key Specifications

Pinout & Package

Package: SOT323 - surface-mount plastic package with 3 terminals, footprint compatible with JEDEC MO-203AA, rated for 580 mW total power dissipation at T_S ≤ 63 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BFR193W E6327, BFP640FESD offers superior high-frequency noise and gain but lacks automotive qualification, while MRF581 trades performance and package size for legacy compatibility and lower cost-neither matches the balanced 900 MHz LNA capability with AEC-Q101 validation.

Availability

BFR193W E6327 is available at Aetrix Electronics and suitable for cellular infrastructure, automotive telematics, and ISM band wireless receivers requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle assurance.

Supply support for BFR193W E6327 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 electronics, and RF solutions, with global R&D and manufacturing facilities.

The BFR193W belongs to Infineon's high-frequency bipolar transistor product line, designed specifically for low-noise, high-linearity RF amplification in automotive-qualified and wireless infrastructure applications up to 2 GHz.

FAQ

What is the recommended bias condition for minimum noise figure?

The BFR193W E6327 achieves NF_min = 1 dB at 900 MHz when biased at I_C = 10 mA and V_CE = 8 V, with source impedance matched to Z_Sopt ≈ 12 + j12 Ω. This condition is validated per Infineon's application note AN205 and requires precise DC feed and RF decoupling on the base and collector lines.

Is thermal derating required above 63 °C soldering point temperature?

Yes - total power dissipation must be linearly reduced above T_S = 63 °C per the published P_tot(T_S) curve. At T_S = 100 °C, maximum allowed P_tot drops to ~350 mW to ensure junction temperature remains ≤ 150 °C under steady-state operation.

Does the SOT323 package support automated optical inspection (AOI)?

Yes - the SOT323 package features coplanar leads and defined solder joint geometry compatible with standard AOI systems. Infineon's package drawing PS-0012 specifies lead coplanarity ≤ 0.1 mm, enabling reliable post-reflow defect detection for high-volume manufacturing.

Can BFR193W E6327 replace BFR92A in existing designs?

No - although both are SOT323 NPN RF transistors, BFR92A has f_T = 5 GHz and NF_min = 1.5 dB at 900 MHz, with different Z_Sopt (≈ 25 + j15 Ω). Direct substitution degrades noise figure by ≥0.5 dB and requires full RF layout and matching network re-optimization.