Description
The Littelfuse RXEF185-2 is a high-reliability PolySwitch PPTC (Polymeric Positive Temperature Coefficient) resettable fuse from the RXEF series. Operating at 72V DC, this component provides an advanced, self-resetting solution for overcurrent protection in a wide variety of electronic and industrial applications.
By utilizing PPTC technology, the RXEF185-2 automatically transitions to a high-resistance state during an overcurrent event and resets itself once the fault is cleared and power is cycled, eliminating the need for manual fuse replacement. With its durable, round radial-leaded design, it is engineered for consistent performance in demanding environments, maintaining stable operation from -40°C to +85°C.
Key Features
- Resettable Reliability: PPTC technology enables automatic circuit protection recovery, reducing maintenance time and system downtime.
- Broad Compatibility: Rated for 72V DC, making it highly versatile for power supplies, industrial controllers, and motor circuits.
- Precision Current Ratings: Features a 1.85A holding current and a 3.7A tripping current for accurate, reliable protection thresholds.
- Durable Radial Design: Robust round form factor with 5.8mm lead spacing, ideal for standard PCB mounting.
- Wide Operating Range: Designed to perform reliably in extreme temperature conditions ranging from -40°C up to +85°C.
Package Includes
- 1 x Littelfuse RXEF185-2 PolySwitch PPTC Resettable Fuse (1.85A, 72V)
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | RXEF185-2 |
| Fuse Type | PPTC Resettable (PolySwitch) |
| Holding Current | 1.85A |
| Tripping Current | 3.7A |
| Voltage Rating | 72V DC |
| Operating Temperature | -40°C to +85°C |
| Lead Spacing | 5.8mm |
| Dimensions (Diameter x Height x Thickness) | 17.5 x 22.4 x 3 mm |
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