2920L185DR

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2920L185DR

+Nomenclature

PTC RESET FUSE 33V 1.85A 2920

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Spécifications

Attribut Valeur
Package Tape & Reel (TR),Cut Tape (CT)
Series POLY-FUSE®, 2920L
ProductStatus Active
Type Polymeric
Voltage-Max 33V
Current-Max 40 A
Current-Hold(Ih)(Max) 1.85 A
Current-Trip(It) 3.7 A
TimetoTrip 2.5 s
Resistance-Initial(Ri)(Min) 50 mOhms
Resistance-PostTrip(R1)(Max) 150 mOhms
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 2920 (7351 Metric), Concave
Size/Dimension 0.289 L x 0.202 W (7.35mm x 5.12mm)
Thickness(Max) 0.049 (1.25mm)

Présentation

Description

The 2920L185DR is a specific model of a surface-mount resistor manufactured by the electronics company Littelfuse. It is part of the PICO® II series and is designed for overcurrent protection in electronic circuits. The "2920" refers to its dimensions, which are 2.9 mm by 2.0 mm, indicating a compact size suitable for space-constrained applications. The "185" denotes its current rating of 1.85 amperes, and "DR" indicates a specific variant or packaging type within the series.
These resistors are typically used to protect circuits from overcurrent conditions by acting as a resettable fuse. They allow for repeated tripping and resetting, which helps prevent damage to sensitive components without needing replacement after each incident. The 2920L185DR is commonly found in consumer electronics, telecommunications, and computer applications, where reliable circuit protection is crucial. Its design ensures low resistance and minimal power consumption, making it efficient for various electronic designs.

Equivalent

The 2920L185DR is a resettable PTC (Polymeric Positive Temperature Coefficient) fuse. Equivalent products are those that match its electrical specifications and form factor. Potential equivalents include:
- Littelfuse's own 2920L series with similar current ratings.
- Bourns MF-MSMF185 or MF-R185 series.
- TE Connectivity's RXEF185 series.
Always verify the electrical specifications, such as hold current, trip current, voltage rating, and physical dimensions, when selecting an equivalent component.

Features

The 2920L185DR is a surface-mount fuse from the 2920L series by Littelfuse. Here are its key features:
1. Form Factor: It has a compact 2920 size (7.4mm x 5.8mm), making it suitable for space-constrained applications.

2. Current Rating: This model is rated for a hold current of 1.85A.
3. Voltage Rating: It supports a maximum voltage of 60V DC.
4. Resistance: This fuse exhibits low resistance, ensuring minimal power loss and heat generation under normal operating conditions.
5. Trip Characteristics: It offers a fast response time to overcurrent conditions, protecting sensitive circuit components.
6. Resettable: Being a polymeric positive temperature coefficient (PPTC) device, it is resettable, returning to a low-resistance state after the fault condition is removed.
7. Temperature Range: It operates effectively within a wide temperature range, suitable for diverse environments.
8. Applications: Ideal for overcurrent protection in applications such as consumer electronics, automotive systems, industrial equipment, and telecommunications.
These features make the 2920L185DR a reliable choice for protecting circuits against overcurrent events.

Pinout

The 2920L185DR is a PolySwitch resettable PPTC (Polymeric Positive Temperature Coefficient) device manufactured by Littelfuse. It is designed for overcurrent protection in electronic circuits. The "2920" in its part number refers to the package size—a standard 2920 surface-mount package.
The device has a two-pin configuration, which is typical for such protection devices. Its primary function is to provide overcurrent protection by limiting the current flow in a circuit when a fault condition or overcurrent situation occurs. This is achieved by increasing its resistance dramatically when exposed to excessive current, thereby reducing the current to a safe level. Once the fault condition is removed, the device resets itself and returns to its low-resistance state.
This specific model, 2920L185DR, is designed to hold a current of 1.85A with a maximum voltage rating typically around 60V, making it suitable for various low-voltage applications.

Manufacturer

The 2920L185DR is a product manufactured by Littelfuse, Inc. Littelfuse is a company that specializes in circuit protection, power control, and sensing technologies. Founded in 1927, the company provides a wide range of products that are used in automotive, industrial, telecommunications, computing, consumer electronics, and appliance applications. Littelfuse is known for its innovations in the electronics industry, particularly in the development of fuses, semiconductors, and other components that help protect electronic devices and systems from overcurrent, overvoltage, and electrostatic discharge (ESD).

Application

The 2920L185DR is a polymeric positive temperature coefficient (PPTC) resettable fuse. Its primary application areas include overcurrent protection in consumer electronics, telecommunications, automotive electronics, and industrial equipment. Specifically, it can be used in battery packs, USB hubs, power supplies, and various circuit boards where overcurrent conditions may occur. The device helps safeguard against fault conditions by limiting excessive current and resetting automatically once the fault is cleared, ensuring the protection and longevity of electronic components and systems.

Package

The 2920L185DR is a Polymeric Positive Temperature Coefficient (PPTC) resettable fuse, commonly known as a Polyfuse, with a package type of 2920, which refers to its dimensions of 2.9mm x 2.0mm in a surface-mount device (SMD) configuration.

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