Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Bipolar RF Transistors

Infineon Technologies BF771E6327HTSA1

Name: BF771E6327HTSA1
Brand: Infineon Technologies
SKU: BF771E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BF771E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Bipolar RF Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BF771E6327HTSA1.pdf

Description:: RF TRANS NPN 12V 8GHZ SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:14,486

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BF771E6327HTSA1 from Infineon Technologies is an NPN silicon RF transistor designed for high-frequency amplification and modulation in TV and VCR tuner front-ends. It features f_T = 6–8 GHz, V_CEO = 12 V, I_C = 80 mA, P_tot = 580 mW, and SOT23 package with confirmed pinout B-E-C (Pin 1=Base, Pin 2=Emitter, Pin 3=Collector).

For engineers reviewing the BF771E6327HTSA1 datasheet, BF771E6327HTSA1 pinout, BF771E6327HTSA1 application in tuner IF stages or low-noise amplifier blocks, or BF771E6327HTSA1 equivalent for AEC-Q101-qualified RF transistors, this page delivers verified electrical specs, thermal resistance (R_thJS ≤ 140 K/W), noise figure (F ≤ 1 dB @ 900 MHz), and RoHS-compliant packaging details.

Technical Context

This device operates as a high-gain, medium-power RF amplifier with DC current gain h_FE = 70–140 at I_C = 30 mA / V_CE = 8 V, optimized for narrowband 900 MHz and 1.8 GHz applications. Its low C_cb = 0.66 pF (typ) and C_eb = 2.25 pF (typ) support stable impedance matching in tuned amplifier designs.

The transistor meets AEC-Q101 stress testing for automotive tuner modules and exhibits ESD sensitivity requiring handling per JESD22-A114. Junction temperature is rated to 150°C, with thermal resistance from junction to soldering point ≤140 K/W under defined PCB mounting conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
f_T	6–8 GHz - usable gain bandwidth for UHF tuner IF amplifiers and modulator driver stages
V_CEO	12 V - maximum collector-emitter voltage before breakdown; sets supply rail limit in 9–12 V tuner circuits
I_C	80 mA - continuous collector current rating; supports moderate RF output power up to ~100 mW
F (Noise Figure)	≤1 dB @ 900 MHz - enables low-noise reception in analog/digital TV front-ends
P_tot	580 mW @ T_S ≤ 69°C - thermal limit defines PCB copper area and heatsinking requirements
C_cb	0.66 pF (typ) - low collector-base capacitance reduces Miller effect and improves stability at 1 GHz
h_FE	70–140 - sufficient DC gain for single-stage bias networks without emitter degeneration

Pinout & Package

SOT23 plastic surface-mount package (3-pin, standard JEDEC MO-178AA outline), lead-free (RoHS compliant), tape-and-reel packaging (3,000 pcs/reel ø180 mm).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Base	DC bias and RF input node; requires stable DC path and impedance-matched RF coupling
Pin 2	Emitter	AC ground reference in common-emitter configuration; connects to RF ground plane via low-inductance path
Pin 3	Collector	RF output and power delivery node; routed with controlled impedance and minimal parasitic inductance

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive tuner modules requiring reliability under temperature cycling and humidity exposure
R_thJS ≤ 140 K/W	Enables thermal design with standard SOT23 PCB land pattern without external heatsink
G_ma = 15 dB @ 900 MHz	Delivers sufficient available gain for single-stage IF amplification in broadcast receiver signal chains
C_ce = 0.28 pF (typ)	Minimizes feedback capacitance to improve unconditional stability in 1 GHz band amplifier layouts
RoHS-compliant packaging	Meets EU Directive 2011/65/EU; no lead content in terminations or mold compound

Applications

Analog TV Tuner IF Amplifier

Digital Terrestrial TV (DTT) Front-End

Use Scenario: Amplifying intermediate frequency signals (38–45 MHz) after mixer stage in analog broadcast receivers.

IC Role / Device Role / Timing Role: Single-stage common-emitter RF amplifier providing 13 dB transducer gain and <1 dB noise figure.

Use Value: Maintains SNR integrity across channel selectivity filters while enabling compact tuner module layout.

Use Scenario: Low-noise amplification of DVB-T/DVB-T2 IF outputs prior to demodulation in set-top boxes.

IC Role / Device Role / Timing Role: High-linearity RF gain block operating at 36 MHz IF with h_FE-stabilized bias network.

Use Value: Supports 64-QAM/256-QAM symbol recovery by preserving adjacent-channel rejection and minimizing intermodulation distortion.

VCR Tuner Modulator Driver

Automotive Radio IF Stage

Use Scenario: Driving RF modulator input in VCR video/audio IF generation circuitry.

IC Role / Device Role / Timing Role: Class-A biased RF buffer delivering stable gain across 30–50 MHz band with low harmonic content.

Use Value: Ensures clean composite video signal generation without spurious emissions violating FCC Part 15 limits.

Use Scenario: IF amplification in FM/AM radio tuner modules mounted in vehicle dashboards.

IC Role / Device Role / Timing Role: AEC-Q101-qualified RF transistor operating reliably from −40°C to +125°C ambient.

Use Value: Eliminates need for derating or additional thermal management in space-constrained automotive enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BFP640FESD	f_T = 25 GHz, lower C_eb = 0.85 pF, higher V_CEO = 15 V	Targeted for 2.4 GHz WiFi LNA; not AEC-Q101 qualified	Prefer for higher-frequency wireless systems where automotive qualification is unnecessary
BC817-40	h_FE = 250–630, f_T = 300 MHz, V_CEO = 45 V, non-RF optimized	General-purpose switching/amplification; unsuitable for >500 MHz operation	Only acceptable for low-frequency bias or control functions-not RF signal paths

Compared with BFP640FESD and BC817-40, BF771E6327HTSA1 uniquely balances 8 GHz f_T, AEC-Q101 compliance, and 1 dB noise figure-making it the only viable choice for cost-sensitive, thermally constrained, automotive-grade TV tuner IF amplifiers.

Availability

BF771E6327HTSA1 is available at Aetrix Electronics and suitable for analog TV tuners, digital terrestrial TV receivers, and automotive radio IF stages requiring stable component supply, RoHS compliance, and AEC-Q101 qualification.

Supply support for BF771E6327HTSA1 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, headquartered in Munich.

The BF771 belongs to Infineon's RF bipolar transistor product line, engineered specifically for high-volume broadcast tuner applications demanding low noise, high gain, and automotive reliability.

FAQ

Is BF771E6327HTSA1 pin-compatible with BCW66?

No. While both use SOT23, BF771E6327HTSA1 has Base–Emitter–Collector pinout (1–2–3), whereas BCW66 uses Emitter–Base–Collector (1–2–3). Swapping them causes immediate circuit failure due to reversed bias polarity and incorrect RF node connections.

What is the maximum recommended PCB copper area for thermal performance?

Infineon specifies R_thJS ≤ 140 K/W with a minimum 10 mm² copper pad connected to Pin 3 (collector) on the top layer, plus internal ground plane connection. Larger pads (>25 mm²) reduce thermal resistance further but require verification against board stack-up and assembly process.

Does BF771E6327HTSA1 support DC-coupled bias networks?

Yes - its V_EBO = 2 V and h_FE tolerance allow stable DC bias using resistor-divider networks. However, AC coupling is preferred in IF amplifiers to avoid drift-induced gain variation and ensure consistent noise figure across temperature.

Can BF771E6327HTSA1 be used in 5G sub-6 GHz infrastructure?

No. Its f_T of 6–8 GHz and G_ma roll-off above 2 GHz make it unsuitable for 3.5 GHz or 4.9 GHz 5G base station amplifiers. It is validated only for consumer broadcast frequencies (45–862 MHz) and automotive radio bands (76–108 MHz).

BF771E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Voltage - Collector Emitter Breakdown (Max):: 12V

Frequency - Transition:: 8GHz

Noise Figure (dB Typ @ f):: 1dB ~ 1.6dB @ 900MHz ~ 1.8GHz

Gain:: 10dB ~ 15dB

Power - Max:: 580mW

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 30mA, 8V

Current - Collector (Ic) (Max):: 80mA

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BF771E6327HTSA1 FAQ

1.How can I place an order for BF771E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BF771E6327HTSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BF771E6327HTSA1 reliable?

The price and inventory of BF771E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF771E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BF771E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF771E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BF771E6327HTSA1?

BF771E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BF771E6327HTSA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BF771E6327HTSA1?

For technical support, including BF771E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF771E6327HTSA1 requirements.

6.How does Aetrix verify that BF771E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BF771E6327HTSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BF771E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BF771E6327HTSA1?

All BF771E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BF771E6327HTSA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BF771E6327HTSA1 part is unused and in its original packaging.

Return procedure for BF771E6327HTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…