2JQ 1.25

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Within the vast selection of fuses there are several categories that can be considered. One such fuse to be highlighted is the 2JQ 1.25 fuse. This is a miniature, dual-element, time-delay fuse designed to satisfay UL 248-14 and CSA C22.2 No. 282.2, and it provides an effective layer of protection for many types of electronic circuits.

The 2JQ 1.25 offers three main benefits. First, it provides sensing current protection up to two times the current rating of the fuse. Second, its dual-element design increases its time-delay performance, allowing it to reliably interact with the majority of AC circuits. Finally, its small size allows it to conveniently fit into tight spaces, making it particularly suitable for use with surface mount and other critical components.

The 2JQ 1.25 fuse is typically found in high power and/or severe-duty applications including:

• High-speed equipment and machinery
• Surge protection circuits
• High reliability devices
• Avionics components
• Medical devices

The 2JQ 1.25 fuse is particularly effective in these types of applications due to its ability to operate at temperatures ranging from -55°C to +125°C. This makes it an ideal solution for powering components that are subjected to extreme environmental conditions.

When considering the working principle of the 2JQ 1.25 fuse, its two-element design and time-delay performance are the key components. The two elements create a time delay that prevents minor current surges from being tripped, while still providing solid current protection. The ability to work effectively in time-delay mode is possible due to a uniformly deposited boron film in the fusing element. This uniform dispersal ensures consistent time-delay performance regardless of the rate of temperature change.

As with all fuses, the performance of the 2JQ 1.25 fuse is directly related to its construction. The fuse’s case is compliant to the UL recognized 94V-0 flammability rating and is constructed of a durable, epoxy-filled body to provide increased rigidity and prevent against moisture damage. The epoxy-filled body also serves to encapsulate the fuse’s components and, in turn, reduce the risk of internal arcing.

The 2JQ 1.25 fuse is a favorable choice for many applications due to its capacity for circuit protection, high reliability, and miniaturized sizing. This versatile fuse is rated for applications up to 125 VAC, 20 A, and offers the user an effective, affordable, and efficient solution for a wide range of power protection needs.

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