What is the Additional Feature ?

Name: BLF278
Brand: Ampleon USA Inc.
SKU: BLF278
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

Part No.:: BLF278

Manufacturer:: Ampleon USA Inc.

Package:: -

Datasheet:

Description:: RF PFET, 2-ELEMENT, VERY HIGH FR

In Stock:: 2199

Quantity:: Add To Cart

For more detailed including pricing and shipping

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BLF278 Specifications

Packaging:
Bulk
Series:
*
ProductStatus:
Active
TransistorType:
-
Current-Collector(Ic)(Max):
-
Voltage-CollectorEmitterBreakdown(Max):
-
VceSaturation(Max)@IbIc:
-
Current-CollectorCutoff(Max):
-
DCCurrentGain(hFE)(Min)@IcVce:
-
Power-Max:
-
Frequency-Transition:
-
OperatingTemperature:
-
MountingType:
-

BLF278 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BLF278 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 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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2. Since inventories and prices may fluctuate to some extent, the sales manager is going to reconfirm the order and let you know if there are any updates.

Shipping & Handling

Shipping fee starts at $35, but some countries will exceed $35. For example (South Africa, Brazil, India, Pakistan, Israel, etc.)

The basic freight (for package ≤0.5kg or corresponding volume) depends on the time zone and countries.

Shipping Method

Currently, our products are shipped through DHL, FedEx, SF, UPS and China Post.

Order Tracking for International Orders

Once your order has been shipped, the tracking number will be sent to the email address registered to your account. This information can also be viewed when logged into your account in the "my account" page.

BLF278 information

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BLF278 Typical application Circuitry

The BLF278 is a VHF power MOS transistor designed for high-power applications, primarily utilized in RF power amplifiers. Developed by NXP Semiconductors, this component is robust, offering excellent performance in broadcast transmitter applications, particularly those operating in the VHF range.

Key Features and Specifications:

- Frequency Performance: Designed for VHF operations, typically from 30 MHz to 300 MHz.

- High Output Power: The BLF278 can deliver up to 300 watts of power, making it suitable for high-power applications.

- Gain: Provides a power gain of about 20 dB, which is ideal for signal amplification needs.

- Efficiency: Features an efficiency of up to 70%, ensuring optimal performance with minimal energy loss.

- Ruggedness: Withstands high VSWR (Voltage Standing Wave Ratio), allowing it to perform reliably under stressful conditions such as load mismatch.

Application Scenario: Community Radio Station Transmitter

In this scenario, the BLF278 is used within a community radio transmitter to amplify audio content for broadcasting over a broad geographic area.

Circuit Design Methodology:

1. Power Supply Connection:

- Voltage Supply Requirements: Implement a power supply that can deliver a stable 50V, which is required for the BLF278 to achieve optimal performance.

- Current Handling: Ensure the power supply can deliver high currents up to 20A, necessary for achieving maximum output power.

- Decoupling Capacitors: Use large capacitors at the power input to stabilize the voltage and reduce noise, ensuring consistent performance.

2. Input Signal Conditioning:

- Impedance Matching: Utilize an impedance matching network to ensure the input signal from the audio source or pre-amplifier matches the gate requirements of the BLF278.

- Signal Filtering: Implement low-pass or band-pass filters to clean the signal before it reaches the BLF278, removing unwanted high-frequency components.

3. Output Load Matching:

- Output Matching Network: Design an output matching network to transform the output impedance of the BLF278 to 50 ohms, suitable for typical broadcast antennas.

- Harmonic Suppression: Include harmonic filters in the output to suppress any higher-order harmonics generated by the BLF278, ensuring compliance with broadcasting standards.

4. Protection and Safety Features:

- SWR Protection: Integrate a VSWR protection circuit to protect the BLF278 from damage due to antenna mismatches or disconnections.

- Thermal Management: Attach an adequate heat sink to the BLF278 and consider forced-air cooling to manage heat dissipation effectively.

5. Monitoring and Control:

- Bias Adjustment: Provide a means for adjusting the gate bias of the BLF278 to optimize linearity and efficiency based on the operating conditions.

- Performance Monitoring: Incorporate sensors to monitor temperature, current, and voltage to ensure the BLF278 operates within safe parameters.

Design Considerations:

- Regulatory Compliance: Ensure that the transmitter meets all relevant FCC or other regulatory body standards for VHF transmission, focusing on frequency accuracy, power limits, and spurious emissions.

- System Reliability: Design the circuit with redundancy in critical components to ensure continuous operation, even under component failure.

- Maintenance Accessibility: Structure the design so that key components like the BLF278 are easily accessible for maintenance or replacement.

- Cost-Effectiveness: Balance the performance benefits with cost considerations, choosing components that provide the best return on investment without compromising quality.

Deploying the BLF278 in a community radio station transmitter showcases its capability to broadcast high-quality audio over large distances, leveraging its high power output and efficiency. This application not only highlights the robustness of the BLF278 but also its adaptability to varied broadcasting needs, ensuring clear and reliable communication.

BLF278 FAQ

1. How to order BLF278 on icwhale.com?

Currently, icwhale.com only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.

2. How does icwhale.com guarantee that BLF278 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the BLF278. All suppliers must pass our qualification reviews before they can publish their products including BLF278 on icwhale.com; we pay more attention to the channels and quality of BLF278 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

3. Are the BLF278 price and inventory displayed accurate?

The price and inventory of BLF278 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?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.

5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

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?

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 we delivered, we will accept the replacement or return of the BLF278 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.

(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