Infineon Technologies BFP520FH6327XTSA1

Overview

BFP520FH6327XTSA1 from Infineon is a silicon NPN RF bipolar transistor in SOT343 package, designed for low-noise amplification at 1.8 GHz with NFmin = 0.9 dB, Gms = 21.5 dB, and OIP3 = 24.5 dBm under 2 V / 20 mA bias; used in LNB local oscillators and broadband CATV/DVB-T LNAs.

For engineers reviewing the BFP520FH6327XTSA1 datasheet, BFP520FH6327XTSA1 pinout, BFP520FH6327XTSA1 application, or BFP520FH6327XTSA1 equivalent, key selection criteria include noise figure at 1.8 GHz, transducer gain stability across 5–20 mA collector current, ESD robustness (1 kV HBM), and SOT343 thermal resistance (RthJS = 290 K/W).

Technical Context

This grounded-emitter SIEGET™ RF transistor operates in common-emitter configuration with emitter terminals on pins 2 and 4, enabling stable biasing and low parasitic inductance for high-frequency matching. Its fT = 21–30 GHz supports operation up to 3 GHz with verified Gma = 14 dB and NFmin = 1.3 dB at that frequency.

The device integrates an on-chip ESD protection structure rated to 1 kV HBM, qualified per JEDEC JESD22-A114 and AEC-Q101, and maintains DC current gain hFE = 50–170 at VCE = 3.5 V / IC = 20 mA with pulse measurement.

Key Specifications

Pinout & Package

SOT343 (SC-82AB) surface-mount plastic package with 4 leads, 1.3 mm × 1.3 mm footprint, 0.95 mm height, and exposed thermal pad for PCB heat sinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BFP540ESDH6327XTSA1, this part offers identical performance but different packaging logistics; versus MRF5812NT1G, it delivers 2.0 dB lower noise figure and 2.0 dB higher OIP3-critical for DVB-T carrier-to-noise ratio and multi-tone distortion control.

Availability

BFP520FH6327XTSA1 is available at Aetrix Electronics and suitable for LNB local oscillators, CATV broadband LNAs, DVB-T tuner front-ends, and FM/AM radio IF amplifiers requiring stable component supply across industrial and automotive production cycles.

Supply support for BFP520FH6327XTSA1 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, and automotive ICs, with global manufacturing and quality certification to IATF 16949 and ISO 9001.

This part belongs to Infineon's fifth-generation SIEGET™ RF bipolar transistor family, engineered specifically for low-noise, high-linearity amplification in consumer and industrial wireless infrastructure from 100 MHz to 3 GHz.

FAQ

What is the maximum recommended collector current for continuous operation?

The absolute maximum collector current is 80 mA, but continuous operation above 20 mA requires derating due to thermal limits: at 250 mW total power dissipation and RthJS = 290 K/W, junction temperature rises 72.5 °C above solder-point temperature. For reliable 24/7 operation, Infineon specifies IC ≤ 20 mA at TA ≤ 70 °C with proper PCB copper area.

Can BFP520FH6327XTSA1 replace BFP540ESD in existing designs?

Yes-BFP520FH6327XTSA1 and BFP540ESDH6327XTSA1 share identical die, SOT343 package, pinout, and all electrical specifications including NFmin, Gms, OIP3, fT, and ESD rating. The only differences are orderable part number, reel quantity (10,000 vs. 3,000), and top-side marking; no layout or bias network changes are needed.

Is external ESD protection required despite the 1 kV HBM rating?

No external ESD protection is required for board-level handling per JEDEC JESD22-A114, as the integrated structure withstands 1 kV HBM. However, during automated placement, static-dissipative nozzles and ionized air blow-off are still recommended. System-level surge events (IEC 61000-4-2) require separate TVS protection regardless of device rating.

How does the dual-emitter configuration affect PCB layout?

The dual-emitter pins (2 and 4) must be connected to the same low-inductance ground plane via separate short traces (<1 mm) or a shared copper pour. Separating them introduces imbalance that degrades gain flatness above 1 GHz and increases noise figure by up to 0.3 dB. Thermal pad soldering is mandatory to achieve rated RthJS = 290 K/W.