Littelfuse 0.5 A Resettable Fuse 15V dc Surface Mount SMD PTC 1812L Series 1812L050PR

Littelfuse 1812L050PR is a 0.5 A resettable fuse designed for surface mount applications requiring compact and reliable overcurrent protection at 15V dc.

This PTC fuse from the Littelfuse 1812L Series features rapid switching from a low-resistance to a high-resistance state under overload or short circuit conditions, and it resets automatically when the fault is cleared and power is removed.

Its small 1812 package size (4.73mm length × 3.41mm width × 0.75mm height) makes it ideal for densely packed circuit boards. The device uses tin-plated copper terminals to ensure secure electrical connections.

The fuse supports a hold current of 0.5A, a trip current of 1A, and a maximum current rating of 100A, with a quick trip time of 0.15 seconds for timely circuit protection. It handles power dissipation up to 0.8W and operates reliably in environmental temperatures ranging from -40°C up to 85°C.

This resettable fuse is maintenance-free and capable of thousands of automatic reset cycles, eliminating the need for fuse replacement and preserving circuit integrity.

Typical applications include security systems, power supplies and transformers, power switching devices, automotive and medical equipment, instrumentation and control systems, computers and peripherals, as well as audio visual and telecommunications equipment.

Compliance with RoHS standards guarantees environmentally friendly manufacturing. The fuse comes packaged on reels to facilitate efficient automated insertion during production. The fuse switches rapidly from low to high resistance during overload conditions.

Supports a maximum voltage of 15V dc and a current rating of 100A. Features a hold current of 0.5A and trip current of 1A with a fast trip time of 0.15 seconds. Compact 1812 package size and surface mount technology enable installation in space-constrained systems.

Constructed with tin-plated copper terminals for reliable electrical contact. Operates reliably in temperatures from -40°C to 85°C with power dissipation of 0.8W. Designed for applications including security systems, power supplies, automotive and medical equipment.

The fuse is RoHS compliant and supplied on reel packaging for automated assembly. Explore further products in the Resettable Fuse category and Littelfuse brand at EnvMart for reliable electronic protection solutions.