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Littelfuse Resettable Fuse 0.4 A Hold Current, 72V Radial Lead, PolySwitch RXEF Series RXEF040
Specifications
| Country of Origin | India |
|---|---|
| Voltage | 72V |
| Brand | Littelfuse |
| Height | 13.5mm |
| Length | 7.6mm |
| Model | RXEF040 |
| Width | 3mm |
| Current Rating | 40A |
| Series | RXEF |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -40°C |
| Trip Current | 800mA |
| Power Dissipation | 0.56W |
| Standards/Approvals | RoHS, TUV, UL, CQC, CSA |
| Time to Trip | 3.8s |
| Hold Current | 0.4A |
| Minimum Resistance | 0.55Ω |
| Maximum Resistance | 1.29Ω |
| Lead Orientation | Radial |
| RXE polyswitch resettable fuse,0.40A 72VBrand | TE Connectivity |
Key Features
- Automatically resets thousands of times, providing maintenance-free circuit protection.
- Low hold current of 0.4 A with trip current of 800 mA.
- Compact size with dimensions 7.6 mm length, 13.5 mm height, and 3 mm width.
- Low resistance range between 0.55 Ω and 1.29 Ω enhances efficiency.
- Operating temperature range from -40°C to 60°C for reliable performance.
- Complies with RoHS, TUV, UL, CQC, and CSA standards for safety and quality.
- Radial lead orientation suitable for PCB mounting applications.
- Ideal for use in printers, industrial controls, telecommunications, and medical equipment.
Product Description
Littelfuse RXEF040 resettable fuse from the PolySwitch RXE Series is a compact, maintenance-free protection device with a hold current rating of 0.4 A and a maximum voltage rating of 72 V. Designed with radial leads, it simplifies assembly on printed circuit boards in various electrical and electronic applications.
This fuse offers fast trip times of 3.8 seconds at an 800 mA trip current, allowing quick protection against overcurrent conditions. Its small dimensions of 7.6 mm length, 13.5 mm height, and 3 mm width make it ideal for compact electronic designs.
With electrical resistance ranging from 0.55 Ω minimum to 1.29 Ω maximum and a power dissipation of 0.56 W, the RXEF040 fuse ensures efficient operation while protecting circuits.
The device can operate reliably across temperatures from -40°C to 60°C, making it suitable for a variety of industrial, telecommunications, medical, and consumer electronics environments.
Certified to meet stringent global standards including RoHS, TUV, UL, CQC, and CSA, this resettable fuse assures compliance and safety in critical systems.
Typical applications include protection of printers, satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB peripherals, game consoles, phones, fax machines, and analog/digital line cards.
Automatically resets itself thousands of times, reducing downtime and maintenance costs. Compact radial lead design for easy PCB integration. Fast response to overcurrent conditions enhances safety. Wide temperature range supports diverse operating environments.
Complies with major international safety standards. Low resistance and power dissipation optimize circuit efficiency. Suitable for multiple electrical and electronic applications. Small form factor fits in space-constrained designs.
Maintenance-free protection ideal for long-term reliability. Provides effective circuit protection in commercial and industrial equipment. Explore more Resettable Fuses and circuit protection devices at EnvMart to enhance your product designs with trusted Littelfuse components.
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Frequently Asked Questions
The hold current rating of this model is 0.4 A.
It has a maximum voltage rating of 72 V.
The dimensions are 7.6 mm in length, 13.5 mm in height, and 3 mm in width.
The trip current for this resettable fuse is 800 mA.
This unit operates reliably within a temperature range from -40°C to 60°C.
The time to trip is 3.8 seconds at the specified trip current.
It complies with RoHS, TUV, UL, CQC, and CSA standards for safety and quality.
The resistance range is between 0.55 Ω and 1.29 Ω, enhancing efficiency.
The power dissipation is 0.56 W.
This model features a radial lead orientation, suitable for PCB mounting applications.
It is suitable for use in printers, industrial controls, telecommunications, and medical equipment.
The country of origin for this fuse is India.
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