Infineon Technologies BFP 720F E6327

Overview

BFP 720F E6327 from Infineon Technologies is an NPN RF bipolar transistor optimized for low-noise amplification up to 45 GHz, with 4.7 V collector-emitter breakdown voltage (V_CEO), 25 mA collector current (I_C), and 18 dB gain at 2 GHz, deployed in 5G front-end modules and microwave receiver LNAs.

For engineers reviewing the BFP 720F E6327 datasheet, BFP 720F E6327 pinout, BFP 720F E6327 application, or BFP 720F E6327 equivalent, key selection criteria include f_T = 45 GHz, NF = 0.75 dB at 2 GHz, S-parameters up to 26.5 GHz, and thermal resistance R_thJC = 120 K/W in the 4TSFP package.

Technical Context

This device uses a silicon bipolar process with epitaxial base and gold metallization to achieve high f_T and low noise figure. Its common-emitter configuration supports broadband small-signal amplification from DC to Ka-band, with stable operation under 4.7 V bias and 25 mA I_C.

The 4-terminal SFP (Small Flat Package) enables low-inductance emitter grounding and controlled parasitic capacitance (C_ob = 0.15 pF), critical for impedance matching above 10 GHz. Device linearity is characterized by OIP3 = +12 dBm at 2 GHz and 10 mA I_C.

Key Specifications

Pinout & Package

Package: 4TSFP (4-terminal Small Flat Package), 1.1 mm × 0.9 mm × 0.37 mm, leadless, thermally enhanced with exposed collector pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BFP 720F E6327, BFP 740F offers wider bandwidth at slightly higher noise and lower V_CEO, while ATF-54143 delivers superior NF but adds gate bias complexity and lacks silicon process reliability for long-life infrastructure deployments.

Availability

BFP 720F E6327 is available at Aetrix Electronics and suitable for 5G infrastructure, test equipment development, and satellite communications requiring stable component supply across multi-year production cycles.

Supply support for BFP 720F 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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and high-frequency RF components.

The BFP series targets millimeter-wave RF front-end design, with the BFP 720F specifically engineered for broadband, low-noise amplification in 5G and defense radar applications.

FAQ

What is the recommended bias condition for optimal noise figure at 28 GHz?

At 28 GHz, the optimal noise figure is achieved at V_CE = 3.0 V and I_C = 12 mA, per Infineon's Application Note AN371. This condition yields NF ≈ 1.3 dB with associated gain of 14.2 dB and input return loss >12 dB, verified using on-wafer S-parameter measurements.

Does the BFP 720F E6327 require external matching networks for 26.5 GHz operation?

Yes - the device is unconditionally stable but not inherently matched. At 26.5 GHz, a two-element LC network (series L + shunt C) is required on the input side to achieve Γ_IN = 0.85∠−35°, and a similar network on the output achieves Γ_OUT = 0.72∠+42°, as specified in the RF Design Guide BFP720F-DS-AN-01.

Is the 4TSFP package compatible with standard reflow profiles for lead-free assembly?

Yes - the 4TSFP package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260 °C for ≤30 seconds. The exposed collector pad must be soldered to a minimum 2×2 mm thermal pad on the PCB with ≥60% solder coverage.

Can the BFP 720F E6327 be used in Class-A power amplifier configurations?

No - it is rated only for small-signal operation (I_C ≤ 25 mA, P_1dB not specified). Its maximum dissipation is 125 mW, and large-signal characterization shows gain compression onset below 0 dBm output power. It is not characterized or guaranteed for power amplifier use.