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Name: BLF278,112
Brand: Ampleon USA Inc.
SKU: BLF278,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Ampleon USA Inc. BLF278,112

Part No.:: BLF278,112

Manufacturer:: Ampleon USA Inc.

Package:: SOT-262A1

Datasheet:: BLF278,112.pdf

Description:: RF FET 2 NC 125V 22DB SOT262A1

In Stock:: 2120

Quantity:: Add To Cart

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BLF278,112 Specifications

Packaging:
Tray
Series:
-
ProductStatus:
Obsolete
TransistorType:
2 N-Channel (Dual) Common Source
Frequency:
108MHz
Gain:
22dB
Voltage-Test:
50 V
CurrentRating(Amps):
18A
NoiseFigure:
-
Current-Test:
100 mA
Power-Output:
300W
Voltage-Rated:
125 V

BLF278,112 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BLF278,112 price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for BLF278,112 to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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BLF278,112 information

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BLF278,112 Typical application Circuitry

The BLF278,112 is a robust LDMOS power transistor specifically designed for RF applications, particularly for use in VHF broadcast transmitters. This transistor, which is produced by NXP Semiconductors, is designed to amplify RF signals with a high power and efficiency.

Key Features and Specifications:

- Operating Frequency: Specifically designed for VHF applications, typically ranging from 30 MHz to 300 MHz.

- Power Output: Capable of delivering up to 300 watts, making it ideal for high-power requirements.

- High Gain: Features a gain of about 20 dB, facilitating effective signal amplification.

- High Efficiency: Offers up to 70% efficiency, minimizing power losses during operation.

- Built for Ruggedness: Can handle a high Voltage Standing Wave Ratio (VSWR), making it resilient under tough operational conditions.

Application Scenario: Emergency Response Communications System

In this application, the BLF278,112 is deployed in an emergency response communications transmitter designed to provide reliable communications during critical situations.

Circuit Design Methodology:

1. Power Supply Setup:

- Stable Voltage Source: Design a power supply that provides a consistent 50V DC, which is necessary for the optimal operation of the BLF278,112. Include a strong voltage regulator so that voltage remains constant even when input power varies.

- Current Handling: Ensure the power supply can deliver currents up to 20A to support the BLF278,112 at full power output.

2. Input Signal Interface:

- Impedance Matching Network: Utilize an RF impedance matching network to match the source impedance with the BLF278,112 input impedance to maximize power transfer and minimize reflections.

- Pre-amplification: Implement a pre-amplifier stage if necessary to raise the input signal to the level required for efficient amplification by the BLF278,112.

3. Output Matching and Load Adjustment:

- Output Matching Network: Design an output matching network that adjusts the high output impedance of the BLF278,112 to match a standard 50-ohm broadcast antenna or transmission line.

- Filtering: Integrate low-pass or band-pass filters to suppress harmonics and spurious emissions, ensuring compliance with FCC regulations.

4. Protection Features:

- Overload Protection: Include a fast-acting shutdown circuit triggered by excessive current or temperature to protect the BLF278,112 from thermal and electrical overstress.

- VSWR Protection: Add a VSWR protection circuit to disconnect the BLF278,112 in case of antenna mismatch or damage, which could otherwise lead to transistor failure.

5. Thermal Management:

- Cooling Mechanism: Attach an efficient heat sink to the BLF278,112, possibly supplemented with a cooling fan, to dissipate heat generated during high-power transmissions.

- Thermal Monitoring: Embed thermal sensors near the BLF278,112 to monitor the temperature and activate cooling or shutdown procedures if thresholds are exceeded.

Design Considerations:

- Regulatory Compliance: Ensure that the entire system, especially the BLF278,112 based transmitter, complies with local RF emission and safety standards.

- System Reliability: Design the system to operate reliably under diverse environmental conditions typical in emergency scenarios.

- Maintenance and Servicing: Ensure that the BLF278,112 and associated components are accessible for easy maintenance and replacement, which is crucial in emergency communication systems.

Using the BLF278,112 in an emergency response communications system highlights its capabilities in providing reliable, high-power output necessary for critical communication needs. This application underlines the importance of the BLF278,112 in maintaining communications during emergencies, ensuring that vital links remain operational when needed most.

BLF278,112 FAQ

1. How to order BLF278,112 on icwhale.com?

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3. Are the BLF278,112 price and inventory displayed accurate?

The price and inventory of BLF278,112 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

4. What forms of payment are accepted?

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5. How is the shipping arranged?

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Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of BLF278,112?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the BLF278,112 we delivered, we will accept the replacement or return of the BLF278,112 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.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of BLF278,112.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations