Littelfuse 1.5 A 12V DC Resettable Fuse Polyswitch SMD150F-2

Littelfuse SMD150F-2 is a 1.5 A 12V DC resettable fuse Polyswitch surface mount device designed for the protection of electrical and electronic circuits against excessive currents. It rapidly transitions from a low resistance state to a high resistance state under overload conditions and automatically resets when the fault condition is cleared and power is removed.

This resettable fuse is compact, with dimensions measuring 9.4 mm in length, 6.71 mm in width, and 3 mm in height, making it ideal for space-constrained surface mount technology (SMT) footprints. It features tin-plated terminal material ensuring reliable solderability and connection integrity.

The fuse is rated for a hold current of 1.5 A and a trip current of 3 A, with a trip time of approximately 5 seconds for effective protection. It has a low minimum resistance of 0.06 Ω and maximum resistance of 250 mΩ, with a power dissipation capacity of 1.9 W, maintaining circuit safety with minimal energy loss. The maximum operating temperature is 85°C, ensuring it functions well under thermal stress.

Designed for maintenance-free use, the fuse offers thousands of automatic reset cycles, eliminating the need for fuse replacement. 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.

The SMD150F-2 is part of Littelfuse's Polyswitch SMD & SMD2 series, which are compact fuses suitable for a variety of computer and electronic applications with surface mount footprints optimized for both metric and imperial standards.

Maintains circuit safety by automatically resetting after overload conditions. Compact surface mount polyswitch with low resistance and fast trip time. Rated hold current of 1.5 A and trip current of 3 A for reliable protection.

Suitable for security systems, power supplies, automotive, and medical equipment. Constructed with tin-plated terminals and designed for maintenance-free operation. Supports thousands of automatic reset cycles improving durability and lifecycle.

Compact dimensions of 9.4mm length, 6.71mm width, and 3mm height for SMT applications. Maximum operating temperature of 85°C ensures stable performance under heat. Power dissipation rated at 1.9 W for efficient circuit safeguarding.

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