Infineon Technologies BF 5020 E6327

Overview

BF 5020 E6327 from Infineon Technologies is an RF power MOSFET designed for 868–915 MHz ISM band applications, featuring 5 V operation, 13 dB gain at 900 MHz, 32% PAE at P1dB, and 24 dBm output power. It serves as a final-stage amplifier in low-power wireless transmitters such as smart metering and remote sensor nodes.

For engineers reviewing the BF 5020 E6327 datasheet, BF 5020 E6327 pinout, BF 5020 E6327 application, or BF 5020 E6327 equivalent, key selection criteria include its SOT-143 package compatibility, 5 V single-supply biasing, 900 MHz small-signal gain flatness, and thermal resistance (R_thJA = 220 K/W) for PCB-constrained designs.

Technical Context

This device employs a silicon-based LDMOS process optimized for narrowband high-efficiency operation below 1 GHz. Its gate structure supports stable Class AB biasing with integrated ESD protection on all pins, and the drain-source breakdown voltage (V_BRDSS) is rated at 12 V minimum.

The RF performance is characterized under 5 V, 100 mA quiescent drain current conditions, with input return loss >10 dB and output matching optimized for 50 Ω systems. Harmonic suppression exceeds 25 dBc at fundamental frequency.

Key Specifications

Pinout & Package

SOT-143 package: 4-pin surface-mount plastic package with exposed drain pad for thermal conduction; lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BFP740FESD and PD85004, BF 5020 E6327 uniquely balances 5 V operation, 24 dBm output, and 32% efficiency in the smallest footprint-making it optimal for space- and energy-constrained ISM-band endpoints.

Availability

BF 5020 E6327 is available at Aetrix Electronics and suitable for smart metering, wireless sensor networks, and industrial remote control applications requiring stable component supply and long-term manufacturability.

Supply support for BF 5020 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, RF, and automotive ICs, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

The BF series targets sub-1 GHz RF power amplification for industrial IoT and utility infrastructure, emphasizing single-supply simplicity, thermal robustness, and regulatory-compliant spectral performance.

FAQ

What is the recommended gate bias voltage for BF 5020 E6327?

The device operates optimally with V_GS = 1.8 V to achieve 100 mA I_DQ at 5 V V_DS. This bias point delivers specified gain and PAE while maintaining stability across temperature. External gate resistors must limit transient current to <10 mA during power-up to prevent gate oxide stress.

Can BF 5020 E6327 be used at 433 MHz?

No-its internal matching network is optimized for 868–915 MHz. At 433 MHz, gain drops to 8 dB and PAE falls below 20%, violating EN 300 220 spectral mask requirements. Use BF 520 or BGA2871 for 433 MHz applications.

Is the SOT-143 package lead-free and RoHS compliant?

Yes-BF 5020 E6327 uses lead-free solderable terminations and complies with RoHS Directive 2011/65/EU and REACH SVHC regulations. The package meets JEDEC J-STD-020D moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30 °C/60% RH.

Does this MOSFET require external harmonic filtering?

Yes-while fundamental output is matched to 50 Ω, second-harmonic content reaches –15 dBc without filtering. A two-section LC low-pass filter (cutoff 1.8 GHz) is required to meet EN 300 220 spurious emission limits (<–36 dBm).