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BFU520XRVL NXP Semiconductors

Name: BFU520XRVL Bipolar RF Transistors
Brand: NXP Semiconductors
SKU: BFU520XRVL
Price: 0.01 USD
Availability: InStock

RF Bipolar Transistors NPN wideband silicon RF transistor

Status:

ActiveThe product is available for production upon order. For lead time inquiries, please contact a LoveChip sales office or an authorized representative directly.

Manufacturer:

NXP Semiconductors

Series:

BFU520

Package:

SOT143R

Category:

Transistors (Bipolar RF Transistors)

RoHs Status:

Lead free /RoHS Compliant

Datasheet:

BFU520XRVL Datasheet (PDF)

Return:

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Overview

The BFU520XRVL from NXP Semiconductors is a high-frequency NPN bipolar junction transistor (BJT) housed in a compact SOT143R surface-mount package. This transistor is engineered for very high-frequency amplification and oscillation applications, typically operating in the RF and microwave bands. Its core design focuses on providing excellent gain and low noise performance, making it a critical component in signal chain front-ends. The BFU520XRVL is supplied on an 11-inch reel with a minimum pack quantity of 10,000 units, facilitating efficient volume manufacturing for consumer electronics, communication systems, and test equipment where stable RF performance is paramount.

Features

High-Frequency Performance: Optimized for RF and microwave applications, offering excellent gain and stability at very high frequencies.
Low Noise Figure: Designed to minimize added noise, crucial for sensitive receiver front-ends and signal integrity.
Compact SMT Package: The SOT143R package enables high-density PCB layouts, saving valuable board space in modern electronic designs.
Volume Manufacturing Support: Available in tape-and-reel packaging with a 10,000-unit minimum order quantity, streamlining procurement for production lines.

Technical Specifications

Transistor Type: NPN Bipolar Junction Transistor (BJT)
Package Type: SOT143R (Small Outline Transistor)
Packaging: Reel, 11" Q3/T4, LargePack
Minimum Order Quantity (MOQ): 10,000 units
Product Status: Active

Pin Configuration and Functions

Pin 1 (Emitter): E - Current output terminal; typically connected to ground or a low-impedance point in common-emitter configurations.
Pin 2 (Base): B - Control terminal; input for the small signal to be amplified, controls the current flow between collector and emitter.
Pin 3 (Collector): C - Current input terminal; usually connected to the supply voltage through a load, outputs the amplified signal.
Pin 4 (Substrate/Shield): S/Case - Often connected to the emitter internally or used as a shield; must be connected to PCB ground for optimal RF performance and stability.

Typical Applications

Wireless Communication: LNA (Low-Noise Amplifier) and driver stages in cellular, Wi-Fi, and Bluetooth modules.
Broadcast Systems: RF signal amplification in FM/UHF broadcast transmitters and receivers.
Test & Measurement: Front-end signal conditioning in spectrum analyzers and signal generators.
Satellite Receivers: Down-converter and amplifier circuits in satellite TV and communication systems.

Equivalent / Alternative Parts

BFU520 (NXP Semiconductors): The base series part number; the BFU520XRVL is a specific packaging variant (SOT143R, Reel).
BFR520 (Infineon / NXP): A similar RF NPN transistor series often used in comparable high-frequency applications.

Advantages

Optimized for High-Density Layouts: The SOT143R package footprint is smaller than many traditional RF transistor packages, allowing for more compact RF front-end designs.
Enhanced RF Stability: The dedicated substrate/shield pin (Pin 4) provides a direct path to ground, improving isolation and reducing parasitic oscillations in high-frequency circuits.
Streamlined Supply Chain: The "Active" lifecycle status and availability in standard reel packaging ensure reliable, long-term supply for volume production projects.

Limitations

Requires Careful RF Layout: Performance is highly dependent on proper PCB layout, grounding, and impedance matching; not suitable for novice designers without RF experience.
Limited Power Handling: As a small-signal transistor, it is designed for low-power amplification and cannot be used in high-power RF output stages.
Parameter Selection Required: Specific parameters like fT, noise figure, and gain are not provided in the basic data; designers must consult the full datasheet for circuit simulation and design.

Package Information

SOT143R package (approximately 2.9 x 1.5mm footprint), 4 pins, surface-mount design. It is supplied on 11-inch reels for automated assembly.

Manufacturer Information

NXP Semiconductors is a global leader in the semiconductor industry, renowned for its extensive portfolio of mixed-signal and analog products, microcontrollers, and RF components. The company's components are foundational in secure connectivity solutions for automotive, industrial & IoT, mobile, and communication infrastructure markets, emphasizing innovation, quality, and reliability.

Design-in Tips

Implement Proper RF Grounding: Ensure Pin 4 (substrate) is connected directly to a solid ground plane using multiple vias to minimize inductance and ensure circuit stability.
Use Impedance Matching Networks: Design input and output matching networks according to the datasheet's S-parameters to maximize power transfer and gain at your target frequency.
Minimize Parasitic Interconnect Length Keep PCB traces between the transistor and its matching components as short and direct as possible to reduce parasitic inductance and capacitance.

Lifecycle Status & PCN/PDN Notes

Lifecycle Status: Active. No Product Change Notifications (PCN) or Product Discontinuation Notices (PDN) are indicated in the provided parameters. For the latest status, always check the manufacturer's official product page.

Specifications

Type

Value

Type

Value

OrderingCode:

934067711235

IsDistributor:

true

IsReqSample:

true

SalesNum:

BFU520XRVL

LeadTime:

RequaestItemType:

REQUEST_SAMPLE

Pack_type:

REEL

Price_flg:

Pack_desc:

Reel 11" Q3/T4, LargePack

MinPackQty:

10000

Status:

Active

Series:

BFU520

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At LoveChip, every product undergoes a stringent QC process to ensure each component is original, brand new, and genuine. Lovechip has assembled a team of skilled QC professionals, creating a strong and mature quality control division. Our independent laboratories are equipped with cutting-edge technology and maintained in optimal conditions to ensure accurate testing. From procurement to final certification, our comprehensive approach guarantees that every part meets the highest standards for performance and reliability, maintaining the quality as it was at the time of manufacture.

Q: Are the inventory displayed on LoveChip accurate?

The inventory fluctuates greatly and cannot be updated in time. It is recommended to confirm the order with LoveChip salesperson before payment.

Q: Does LoveChip provide technical support?

Yes, Our product technical engineer will provide you with complete technical support, including pinout information, application notes, replacement, datasheet in pdf, manual, schematic, equivalent, cross reference.

Q: What is the process for returns or replacement

If there is something wrong with the product we delivered, we will accept the replacement or return only when all of the below conditions are fulfilled:

(1) Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.).

(2) We are informed of the defect described above within 90 days after the delivery.

(3) Products should be returned in the original packaging and in an unused condition (unless defective). ESD or moisture-sensitive products should not be opened except under controlled conditions.

Two processes to return the products:

(1) Inform us within 90 days

(2) Obtain Requesting Return Authorizations

Q: What is the primary application of the BFU520XRVL transistor?

It is primarily designed as a low-noise, high-gain amplifier in the front-end (LNA stage) of RF receivers operating at very high frequencies, such as in wireless communication devices.

Q: Why does the SOT143R package have 4 pins when it's an NPN transistor?

The fourth pin is typically a substrate or shield connection. It must be connected to the PCB ground plane to provide effective shielding, improve isolation between ports, and enhance high-frequency stability.

Q: Is this part suitable for prototyping or only volume production?

A> While it is supplied on a reel with a 10,000-unit MOQ, samples can often be requested ("isReqSample" is true). For prototyping, check with distributors for sample availability or smaller quantity offerings.

Q: What are the key parameters I need from the datasheet for my design?

Critical parameters include Transition Frequency (fT), Noise Figure (NF), Gain (S21), and S-parameters at your operating frequency. These are essential for simulating and designing the matching networks.

Wiki Reference

A transistor is a semiconductor device that is used to amplify or switch electrical signals and power. It is an essential component of modern electronics and is typically made from semiconductor material with at least three terminals for connection to an electronic circuit. By applying a voltage or current to one pair of the transistor's terminals, the current through another pair of terminals can be controlled. This allows the transistor to amplify a signal, with the output power being higher than the input power. Transistors are found both individually and embedded in integrated circuits, and are considered to be one of the greatest inventions of the 20th century due to their importance in modern electronics. The concept of a field-effect transistor (FET) was proposed by physicist Julius Edgar Lilienfeld in 1926, but a working device was not possible at the time. The first working transistor was invented in 1947 by physicists John Bardeen, Walter Brattain, and William Shockley at Bell Labs, and they were awarded the Nobel Prize in Physics in 1956 for their achievement. The most commonly used type of transistor is the metal–oxide–semiconductor field-effect transistor (MOSFET), which was invented by Mohamed Atalla and Dawon Kahng at Bell Labs in 1959. Transistors revolutionized the field of electronics and contributed to the development of smaller and cheaper electronic devices such as radios, calculators, and computers. While most transistors are made from very pure silicon or germanium, other semiconductor materials may also be used. Transistors may have one kind of charge carrier in a field-effect transistor, or two kinds of charge carriers in bipolar junction transistor devices. Compared to vacuum tubes, transistors are generally smaller and require less power to operate, although vacuum tubes still have advantages at very high operating frequencies or voltages. Multiple manufacturers produce standardized types of transistors.

Shipping Information

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Shipping Fees reference DHL/FedEx

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DHL

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Lead Time: 2-5 days

Fedex

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Lead Time: 3-7 days

UPS

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Lead Time: 3-7 days

TNT

Ship Fee: $25-$65 (0.50kg)

Lead Time: 3-7 days

EMS

Ship Fee: $30-$50 (0.50kg)

Lead Time: 7-15 days

REGISTERED AIR MAIL

Ship Fee: $2-$4(0.10 KG)

Lead Time: 5-20 days

The detail charges, please contact us. Different country the express charges are different.

Payment Term

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Quality Guarantee

We offer a 365-day warranty.

If any items you receive are not of perfect quality, we will arrange a refund or replacement, provided the items remain in their original condition.

If your item significantly differs from our product description, you can either:

1) Return it for a full refund

2) Contact us to discuss after-sales solutions.

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