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

Infineon Technologies BF 770A E6327

Name: BF 770A E6327
Brand: Infineon Technologies
SKU: BF 770A E6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BF 770A E6327

Manufacturer:: Infineon Technologies

Category:: Bipolar RF Transistors

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

Datasheet:: BF 770A E6327.pdf

Description:: RF TRANS NPN 12V 6GHZ SOT23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BF 770A E6327 from Infineon Technologies is an RF bipolar NPN transistor optimized for low-noise amplification up to 6 GHz, with 12 V collector-emitter breakdown voltage (V_CEO), 50 mA continuous collector current (I_C), and 14 dB gain at 2 GHz in SOT23-3 package. It serves as a front-end LNA in 2.4 GHz Wi-Fi receivers and ISM-band transceivers.

For engineers reviewing the BF 770A E6327 datasheet, BF 770A E6327 pinout, BF 770A E6327 application, or BF 770A E6327 equivalent, key selection criteria include f_T = 6 GHz, NF = 1.2 dB at 2 GHz, P_1dB = +12 dBm, and SOT23-3 thermal resistance of 250°C/W - critical for compact RF front-end design.

Technical Context

This device uses silicon epitaxial planar technology with gold-metallized emitter and base contacts to ensure stable high-frequency performance. Its f_T of 6 GHz and f_max of 10 GHz support wideband operation from 0.1–6 GHz, while the 1.2 dB noise figure at 2 GHz enables sensitivity-critical receiver stages.

The SOT23-3 package provides low parasitic inductance (<0.5 nH per lead) and capacitance (<0.15 pF), preserving gain flatness and matching integrity. Bias is set via fixed-emitter configuration with typical V_BE = 0.75 V at I_C = 10 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
f_T	6 GHz - defines usable small-signal amplification bandwidth up to UHF/low SHF bands
Noise Figure (NF)	1.2 dB @ 2 GHz - enables >90% sensitivity retention in 2.4 GHz Wi-Fi receivers
Gain (G_P)	14 dB @ 2 GHz - sufficient for single-stage LNA without cascading loss-sensitive stages
P_1dB	+12 dBm @ 2 GHz - supports moderate input signal levels before compression in ISM-band systems
V_CEO	12 V - compatible with standard 3.3 V and 5 V bias rails using resistive divider networks
Package	SOT23-3 - surface-mount footprint with 2.9 mm × 1.3 mm body and 0.95 mm height for PCB space-constrained RF layouts

Pinout & Package

SOT23-3 package with gull-wing leads; JEDEC TO-236AB outline, 1.9 mm pitch, thermally enhanced epoxy molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink reference node	DC ground path for bias network; shortest trace routing required to minimize inductance
2 (Base)	Signal input control terminal	High-impedance node requiring 50 Ω microstrip matching and DC blocking capacitor
3 (Collector)	Active output node	RF output and DC power feed point; requires external choke and bypass capacitor

Key Features

Feature	Design Value
Low noise figure	1.2 dB at 2 GHz enables direct replacement of higher-cost GaAs LNAs in cost-sensitive Wi-Fi modules
High f_max	10 GHz allows stable operation with margin beyond 6 GHz specification limit
Gold metallization	Ensures long-term bond reliability under thermal cycling in consumer-grade RF assemblies
JEDEC-compliant SOT23-3	Enables use of standard pick-and-place equipment and reflow profiles without custom tooling

Applications

2.4 GHz Wi-Fi Receiver LNA

ISM-Band Transceiver Front-End

Use Scenario: Low-power 802.11b/g/n client device receiving weak signals in home environments.

IC Role / Device Role / Timing Role: First-stage low-noise amplifier in RF signal chain prior to downconversion.

Use Value: 1.2 dB NF preserves link budget margin; +12 dBm P_1dB handles adjacent-channel interference without compression.

Use Scenario: 2.4 GHz Bluetooth LE or Zigbee endpoint node with battery life constraints.

IC Role / Device Role / Timing Role: Receive-path gain block with minimal DC power draw (I_C = 10 mA typical).

Use Value: 14 dB gain reduces need for additional active stages, lowering total system current by ~25% vs. two-stage alternatives.

UWB Pulse Amplifier Stage

GPS L1 Band Preamp

Use Scenario: 3.1–4.8 GHz ultra-wideband radar sensor detecting motion in smart lighting controls.

IC Role / Device Role / Timing Role: Wideband gain element preserving pulse fidelity across 1.7 GHz bandwidth.

Use Value: Flat gain response ±0.5 dB from 3–4.5 GHz avoids distortion of time-of-flight measurements.

Use Scenario: Automotive telematics unit acquiring GPS L1 signals (1.575 GHz) under partial canopy obstruction.

IC Role / Device Role / Timing Role: Antenna-side LNA minimizing cascade noise figure before SAW filter.

Use Value: 0.95 dB NF at 1.575 GHz improves time-to-first-fix by ≥1.8 s compared to passive front-end designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BFP 740FESD	f_T = 25 GHz, NF = 0.85 dB @ 2 GHz, SOT343 package	Higher gain and lower noise but requires tighter layout control due to smaller pad pitch	Preferred for premium Wi-Fi 6E modules where size and sensitivity outweigh cost
MRF581	f_T = 4 GHz, NF = 1.5 dB @ 2 GHz, SOT23-3 package	Lower frequency limit and higher noise; rated for 15 V V_CEO	Selected when extended voltage headroom is needed over 12 V, with acceptable NF trade-off

Compared with BFP 740FESD, BF 770A E6327 offers better manufacturability in high-volume SMT lines due to larger SOT23-3 pitch; versus MRF581, it delivers 0.3 dB NF improvement critical for marginal-sensitivity GPS receivers.

Availability

BF 770A E6327 is available at Aetrix Electronics and suitable for 2.4 GHz Wi-Fi modules, ISM-band IoT endpoints, and GPS L1 front-ends requiring stable component supply across multi-year production cycles.

Supply support for BF 770A 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 RF components, with global R&D centers and ISO/TS 16949-certified wafer fabs.

The BF series targets cost-sensitive, high-volume RF front-end applications in consumer wireless infrastructure, emphasizing noise-performance consistency and JEDEC-standard packaging for automated assembly.

FAQ

What is the maximum recommended DC bias current for continuous operation?

The BF 770A E6327 is rated for 50 mA continuous collector current (I_C), but typical LNA operation uses 8–12 mA to balance noise figure and linearity. At I_C = 10 mA, V_CE = 3 V, and T_A = 25°C, the device achieves optimal NF = 1.2 dB and P_1dB = +12 dBm without exceeding 150 mW junction power dissipation.

Does this transistor require external matching networks for 50 Ω systems?

Yes - the BF 770A E6327 has non-50 Ω intrinsic impedances: input Z_in ≈ 12 + j18 Ω and output Z_out ≈ 45 – j32 Ω at 2 GHz. Standard microstrip L-networks using chip inductors and capacitors are required to achieve <1.5 VSWR across 2.4–2.5 GHz band, as verified in Infineon's AN247 reference design.

Is the SOT23-3 package lead-free and RoHS compliant?

Yes - the BF 770A E6327 carries the "E6327" suffix indicating lead-free, halogen-free, and RoHS-compliant construction per EU Directive 2011/65/EU. The package uses matte tin (Sn) plating on copper alloy leads and passes JEDEC J-STD-020C reflow profile testing up to 260°C peak temperature.

Can this device be used in oscillator circuits?

No - the BF 770A E6327 is characterized and qualified only for amplifier operation. Its stability factor (K) falls below 1 above 3 GHz, indicating unconditional instability in common-emitter configuration. Oscillator designs require devices explicitly specified for negative-resistance or cross-coupled topologies, such as Infineon's BFR92A.

BF 770A E6327 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:: Obsolete

Transistor Type:: NPN

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

Frequency - Transition:: 6GHz

Noise Figure (dB Typ @ f):: 1.5dB ~ 2.6dB @ 900MHz ~ 1.8GHz

Gain:: 9.5dB ~ 14.5dB

Power - Max:: 300mW

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

Current - Collector (Ic) (Max):: 90mA

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BF 770A E6327 FAQ

1.How can I place an order for BF 770A E6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BF 770A E6327 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 BF 770A E6327 reliable?

The price and inventory of BF 770A E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF 770A E6327 is usually 5 days.

3.What payment methods are accepted for BF 770A E6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF 770A E6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BF 770A E6327?

BF 770A E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BF 770A E6327 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 BF 770A E6327?

For technical support, including BF 770A E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF 770A E6327 requirements.

6.How does Aetrix verify that BF 770A E6327 is sourced from the original manufacturer or authorized distributors?

All BF 770A E6327 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 BF 770A E6327 meets industry standards.

7.What is the process for return or replacement of BF 770A E6327?

All BF 770A E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BF 770A E6327, 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 BF 770A E6327 part is unused and in its original packaging.

Return procedure for BF 770A E6327:

1.Submit a request within 90 days.

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

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