Littelfuse, Inc. 0456040.DR

- Part Number: 0456040.DR - Type: Resettable Fuse/Polymeric PTC Resettable Fuse - Description: This device is designed to protect circuits by resetting after an overcurrent event, which makes it reusable. It typically has a trip current rating and voltage rating suited for various applications. Functions - Overcurrent Protection: Protects circuits by breaking the current flow when the current exceeds a certain threshold. - Self-Resetting: Automatically resets when the fault condition is removed, restoring normal operation without needing to be replaced. - Thermal Stability: Provides stable operation over a range of temperatures. Applications - Consumer Electronics: Used in devices such as televisions, computers, and audio systems. - Automotive: Protection of critical automotive components against short circuits or overloads. - Telecommunications: Used for protecting circuits in telecom equipment from transients. - Power Supplies: Protects power supply circuits in various electronic systems. Alternative Parts - Other Littelfuse PTC devices similar to the 0456040.DR may include: - Littelfuse 0456060.DR: With a slightly higher holding current. - Littelfuse 0456020.DR: With a lower holding current rating. - Various manufacturers offer comparable PTC fuses: - Bourns: PTC devices with similar characteristics. - Schurter: Offering alternative circuit protection solutions. Embedded Modules - Littelfuse may provide specialized modules or kits that include PTC devices for specific applications, such as: - Power distribution modules with embedded protection: These modules incorporate PTCs for managing circuit protection in a compact form. - Evaluation boards: For testing Littelfuse PTCs in various configurations. Related Q&A 1. Q: What is the maximum voltage rating for Littelfuse 0456040.DR? - A: The Littelfuse 0456040.DR has a maximum voltage rating of 60V DC. 2. Q: In what applications would the 0456040.DR be typically used? - A: The 0456040.DR is commonly used in consumer electronics, automotive applications, telecommunications devices, and power supplies. 3. Q: How does the resettable feature of the Littelfuse 0456040.DR work? - A: The device uses a thermally responsive polymer that heats up and increases resistance when an overcurrent flows through it, cutting off current. Once the fault is removed and the device cools down, it automatically resets and allows current to flow again. 4. Q: Can I use the 0456040.DR as a substitute for traditional fuses? - A: Yes, the 0456040.DR can replace traditional fuses in many applications where resettable protection is needed, providing ease of use without needing manual replacement after a fault. 5. Q: Are there any specific handling or installation instructions for the Littelfuse 0456040.DR? - A: Yes, it is recommended to follow the manufacturer's specifications regarding mounting, electrical ratings, and environmental conditions to ensure proper operation and longevity of the device.