Infineon Technologies BFP 650F E6327

Overview

BFP650F E6327 from Infineon Technologies is an NPN silicon germanium RF transistor optimized for medium-power amplifier and driver stages in 1.8–6 GHz systems. It delivers 21.5 dB maximum available gain at 1.8 GHz, 0.8 dB noise figure at 1.8 GHz, 31 dBm OIP3, 17.5 dBm P-1dB output power, and 42 GHz transition frequency (f_T) - enabling high-linearity, low-phase-noise RF front-end designs in cellular infrastructure and wireless transceivers.

For engineers reviewing the BFP650F E6327 datasheet, BFP650F E6327 pinout, BFP650F E6327 application in RF power amplification or oscillator design, or BFP650F E6327 equivalent for SiGe RF transistor replacement, this page provides verified electrical specifications, TSFP-4 package layout, thermal derating curves, and validated alternative parts with functional trade-offs.

Technical Context

This SiGe NPN transistor uses heterojunction bipolar technology to achieve high f_T (42 GHz) and low noise figure (0.8 dB at 1.8 GHz) while maintaining robust linearity (OIP3 = 31 dBm). Its DC current gain (h_FE = 110–270) and low C_cb (0.26 pF) support stable broadband matching up to 6 GHz.

The device operates at V_CE = 3 V, I_C = 80 mA under typical RF conditions, with thermal resistance R_thJS ≤ 130 K/W and junction temperature rating up to 150 °C - enabling use in thermally constrained surface-mount RF modules without active cooling.

Key Specifications

Pinout & Package

Package: TSFP-4 (Thin Small Flat Package, 4-pin, lead-free, RoHS-compliant), dimensions 1.4 × 1.2 × 0.55 mm, tape-and-reel packaging (3,000 pcs/reel, ø180 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BFP420F and NE68133, the BFP650F E6327 uniquely balances ultra-high f_T, sub-1 dB noise, and 31 dBm OIP3 in a dual-emitter TSFP-4 package - making it optimal for thermally dense, high-performance 1.8–6 GHz RF driver and oscillator designs where both linearity and phase noise are co-critical.

Availability

BFP650F E6327 is available at Aetrix Electronics and suitable for cellular infrastructure, automotive radar receivers, and WiMAX transceiver front ends requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for BFP650F 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, RF, automotive, and security ICs - with leadership in SiGe, GaN, and silicon carbide technologies.

The BFP650F belongs to Infineon's BFP series of high-frequency bipolar transistors, designed specifically for low-noise, high-linearity RF amplification and oscillator circuits in wireless infrastructure and automotive radar systems.

FAQ

What is the recommended DC bias condition for optimal noise figure at 1.8 GHz?

For minimum noise figure (0.8 dB), operate at I_C = 10 mA and V_CE = 3 V with source impedance matched to Z_Sopt ≈ 25 + j15 Ω. This condition is specified in the datasheet's noise parameter table and requires external matching networks - not 50 Ω termination.

Can BFP650F E6327 be used in Class AB amplifier configurations?

Yes - its h_FE range (110–270) and thermal resistance (≤130 K/W) support stable Class AB operation at I_C = 40–80 mA and V_CE = 3 V. Derate total power dissipation above 85 °C per the P_tot vs. T_S curve in datasheet Figure 4.

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

Yes - the RoHS-compliant TSFP-4 package is qualified for JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for 30 seconds. Ensure board layout follows Infineon's recommended pad geometry and thermal relief patterns from Package Outline Drawing TSFP-4.

Does BFP650F E6327 require external ESD protection in circuit design?

Yes - it is classified as ESD-sensitive (HBM Class 1B, <500 V). Implement on-board TVS diodes or RC filters at RF ports, maintain grounded workstations during handling, and avoid floating test fixtures. The "ESD sensitive device" warning in the datasheet mandates strict IEC 61340-5-1 compliance.