RXEF050

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PTC RESET FUSE 72V 500MA RADIAL

  • FabricanteLittelfuse Inc.

  • Peça do Fabricante #RXEF050

  • Pacote Radial, Disc

  • Em Estoque16070

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Especificações

Atributo Valor
Supplier Littelfuse Inc.
Package / Case Bag
Series PolySwitch®, RXEF
Part Status Active
Type Polymeric
Voltage - Max 72V
Current - Max 40 A
Current - Hold(Ih)(Max) 500 mA
Current - Trip(It) 1 A
Timeto Trip 4 s
Resistance - Initial(Ri)(Min) 500 mOhms
Resistance - Post Trip(R1)(Max) 1.17 Ohms
Operating Temperature -40°C ~ 85°C
Mounting Type Through Hole
Size / Dimension 0.311 Dia x 0.118 T (7.90mm x 3.00mm)
Height - Seated(Max) 0.539 (13.70mm)

Visão Geral

Description

The RXEF050 is a PolySwitch resettable fuse, also known as a PTC (positive temperature coefficient) thermistor, designed to protect electronic circuits from overcurrent conditions. Manufactured by Littelfuse, it operates by increasing its resistance substantially when the current exceeds a specified threshold, thereby limiting the current flow and protecting the circuit. Once the fault condition is removed and the device cools down, it resets automatically and returns to its low-resistance state.
Key specifications of the RXEF050 include a hold current of 0.50A and a maximum voltage rating of 60V. It has a maximum trip current of 1.0A and a typical power dissipation of 0.8W when tripped. The RXEF050 is suitable for use in a wide range of applications, including telecommunications, automotive, and consumer electronics, providing a reliable and maintenance-free solution for circuit protection. Its compact size and fast response to overcurrent conditions make it an attractive choice for designers looking to protect sensitive electronic components.

Equivalent

The RXEF050 is a PolySwitch resettable PPTC (Polymeric Positive Temperature Coefficient) fuse. Equivalent products are those with similar specifications such as hold current, trip current, and voltage rating. Some equivalent products include the Bourns MF-R050, Littelfuse RUEF050, and Epcos B59750 series. Ensure to verify specific parameters like current rating, maximum voltage, and resistance to confirm compatibility for your application. Always consult datasheets for detailed specifications.

Features

The RXEF050 is a Polymeric Positive Temperature Coefficient (PPTC) resettable fuse by Littelfuse, designed for overcurrent protection in electronic circuits. Key features include:
1. Current Rating: It has a hold current of 0.50A, meaning it can handle continuous currents up to this level without tripping.
2. Operating Voltage: The maximum voltage rating is typically around 60V DC, allowing it to be used in a variety of applications.
3. Trip Current: It trips at a current of 1.00A, providing protection by transitioning to a high-resistance state when the current exceeds this value.
4. Resistance: The initial resistance is relatively low, facilitating minimal impact on circuit performance during normal operation.
5. Resettable: After tripping and the fault being cleared, the RXEF050 automatically resets once the power is cycled, restoring the circuit.
6. Compact Size: Its small footprint makes it suitable for compact electronic devices.
7. Applications: Commonly used in consumer electronics, telecommunications, and computer peripherals for protection against overcurrent conditions.
These features make the RXEF050 an effective solution for safeguarding electronic components against overcurrent damage.

Pinout

The RXEF050 is a type of resettable polymeric positive temperature coefficient (PPTC) fuse. It is part of the RXEF series and is used for overcurrent protection in electronic circuits. The "050" in the part number typically refers to its hold current rating, which is 0.50 amperes.
As a component, the RXEF050 does not have pins in the traditional sense like an IC or a connector; instead, it has two leads. These leads are used for connecting the device in series with the load that requires protection. The function of the RXEF050 is to limit the current flow in a circuit: under normal conditions, it allows current to pass through with low resistance, and in the event of an overcurrent situation, its resistance increases dramatically, thus limiting the current and protecting the circuit. Once the fault is cleared and the device cools down, it resets and allows normal operation to resume.

Manufacturer

The RXEF050 is manufactured by Littelfuse, Inc. Littelfuse is a global company known for providing circuit protection products and solutions. They specialize in technologies that protect electrical circuits from harmful overcurrent and overvoltage conditions. Their product range includes fuses, semiconductors, polymers, and other components designed to safeguard electronics in automotive, industrial, and consumer applications. Littelfuse is recognized for its innovation in safety and reliability in the electronics industry.

Application

The RXEF050 is a Polyswitch resettable fuse used primarily for overcurrent protection. Its application areas include:
1. Consumer Electronics: Protecting circuits in devices like laptops, smartphones, and tablets.
2. Telecommunications: Safeguarding communication equipment from overcurrent conditions.
3. Automotive: Used in vehicles to prevent electrical overloads in control systems and accessory circuits.
4. Industrial Controls: Providing protection for sensitive control circuits in industrial machinery.
5. Battery Packs: Ensuring safety in rechargeable battery applications by preventing excessive current draw.
6. Power Supplies: Offering overcurrent protection in various power supply units and adapters.
These applications benefit from the RXEF050's ability to reset automatically after a fault condition is cleared.

Package

The RXEF050 is a radial leaded PolySwitch resettable PPTC (Polymeric Positive Temperature Coefficient) fuse. It is typically used for overcurrent protection and is part of the RXEF family, which features radial leaded packages designed for through-hole mounting on PCBs.

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