Professional IC Distribution & Technical Solutions

The 1812L050/30PR is a PTC resettable fuse manufactured by Littelfuse. Below are its key specifications, descriptions, and features:

Specifications:

• Part Number: 1812L050/30PR
• Manufacturer: Littelfuse
• Type: Polymeric PTC Resettable Fuse
• Package / Size: 1812 (4532 metric)
• Hold Current (Iₕ): 0.50 A
• Trip Current (Iₜ): 1.00 A
• Maximum Voltage (Vₘₐₓ): 30 V
• Maximum Current (Iₘₐₓ): 40 A
• Power Rating: 1.5 W
• Resistance (Rₘᵢₙ): 0.20 Ω
• Resistance (R₁ₘₐₓ): 0.50 Ω
• Operating Temperature Range: -40°C to +85°C

Descriptions:

• A resettable overcurrent protection device that automatically resets after fault conditions are removed.
• Designed for low-voltage applications (up to 30V).
• Compact surface-mount (SMD) form factor (1812 package).

Features:

• Resettable functionality – Eliminates the need for replacement after tripping.
• Fast trip response – Protects circuits from overcurrent events.
• Low resistance – Minimizes power loss in normal operation.
• RoHS compliant – Meets environmental standards.
• Reliable performance – Suitable for automotive, industrial, and consumer electronics.

This PTC fuse is commonly used in battery packs, power supplies, and USB ports for overcurrent protection.

For detailed datasheets, refer to Littelfuse’s official documentation.