0242.040UR Circuit Protection |
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Allicdata Part #: | F11350TR-ND |
Manufacturer Part#: |
0242.040UR |
Price: | $ 1.77 |
Product Category: | Circuit Protection |
Manufacturer: | Littelfuse Inc. |
Short Description: | FUSE 250V BARRIER FUSE SMT .040A |
More Detail: | N/A |
DataSheet: | 0242.040UR Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
500 +: | $ 1.60776 |
1000 +: | $ 1.52460 |
1500 +: | $ 1.44144 |
2500 +: | $ 1.38600 |
Series: | 242 |
Packaging: | Tape & Reel (TR) |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Fuse Type: | Cartridge |
Current Rating: | 40mA |
Voltage Rating - AC: | 250V |
Voltage Rating - DC: | 250V |
Response Time: | -- |
Applications: | Hazardous Locations |
Features: | Intrinsically Safe |
Class: | -- |
Approvals: | cURus |
Operating Temperature: | -40°C ~ 125°C |
Breaking Capacity @ Rated Voltage: | 4kA |
Mounting Type: | Surface Mount |
Package / Case: | Cartridge, Non-Standard |
Size / Dimension: | 0.119" Dia x 0.331" L (3.02mm x 8.40mm) |
Melting I²t: | 0.000078 |
DC Cold Resistance: | 16.48 Ohms |
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0242.040UR Application Field and Working Principle
0242.040UR is a special type of fuse, which belongs to electrical specialty fuses. Specialty fuses are designed to provide extra protection for electrical circuits that contain equipment or circuits whose current draw is nonlinear, varying significantly during operation.
0242.040UR type of fuses are specifically designed to protect high-precision electronic equipment, such as medical or laboratory equipment, from short-circuit and overloads – which can cause irreparable damage to delicate circuitry. They also provide protection against electrical faults like short-circuiting, no-load faults, reverse polarity faults, and ground faults.
The 0242.040UR fuse consists of a copper bar inside a ceramic enclosure, with a set of conductive metal elements that carry current when the fuse is closed. The copper bar provides the electrical connection between the two metal elements, and also acts as a safety switch, preventing the current from rising to dangerous levels. When the current exceeds the current rating of the fuse, the thermal fusing element melts, and the fuse breaks the electrical connection.
The working principle of the 0242.040UR fuse is simple: when the current in the circuit exceeds the rated current of the fuse, the temperature inside the fuse element rises, until it reaches its melting point. The fuse element then melts and the circuit is broken, thus preventing the damage caused by the increased current.
The 0242.040UR type of speciality fuses are designed to provide reliable short-circuit protection and improved thermal shock performance. They offer excellent physical durability and reliability, making them suitable for use in a wide range of electrical systems.
The specific data is subject to PDF, and the above content is for reference
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