Bourns 1.85 A Resettable Fuse 30V Radial Leaded MFR Series MF-R185

Bourns MF-R185 is a resettable fuse designed for circuit protection in electrical and electronic applications, rated at 1.85 A hold current and 30V operating voltage. Its radial leaded form factor and compact dimensions (12mm length, 3mm width, and 18.4mm height) allow easy installation on printed circuit boards. The fuse is built with a flame-retardant cured epoxy polymer body that complies with UL 94V-0 standards, providing safe and durable protection.

This model features rapid switching from a low resistance state to a high resistance state during electrical overloads or short circuits, preventing damage to circuits with a trip time of 8.7 seconds at 3.7A trip current. It automatically resets once the fault condition is cleared, eliminating the need for replacement, thus reducing maintenance costs. The radial lead orientation with 0.51mm lead diameter supports stable connections.

Operating temperature ranges from -40°C to 85°C, making it suitable for diverse industrial environments. Power dissipation is rated at 1 watt, ensuring efficiency in low power applications. The fuse conforms to international safety standards including RoHS and UL, assuring quality and performance compliance.

Main applications include protection in security systems, power supplies and transformers, automotive and medical equipment, instrumentation and control systems, computing peripherals, audio-visual devices, and telecommunications. This resettable fuse offers a maintenance-free, compact, and environmentally robust solution to safeguard electronic circuits.

Automatically resets multiple times without replacement. Designed for protection against excessive currents and short circuits. Compact size with 12mm length and 3mm width for space efficiency. Cured epoxy polymer body meets UL 94V-0 flame retardant standard.

Operating temperature range from -40°C to 85°C ensures wide environment usability. Radial lead construction with 0.51mm lead diameter for PCB mounting. Power dissipation rated at 1 watt suitable for low power circuits. Complies with RoHS and UL safety standards for reliability.

Time to trip is approximately 8.7 seconds at overload conditions. Ideal for use in security systems, power supplies, automotive and instrumentation. Explore additional Bourns Resettable Fuse products and related circuit protection components at EnvMart.