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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | OptiFuse |
| Manufacturer Product Number | R1812-200-R |
| Description | PTC Fuse; 2.00 A; 8 VDC; 1812; SMD; Castellated |
| Datasheet | Download Datasheet |
The OptiFuse R1812-200-R is a 2 A hold 1812 surface-mount resettable PTC fuse, rated 8 VDC maximum.
A PTC fuse carries its hold current indefinitely; on an overcurrent it heats, its resistance rises sharply and it limits the current to a trickle, then resets on its own once the fault is removed and power is cycled. This one always trips at 3.5 A, in max. 2.000 s at 8.0 A.
It withstands a fault current of up to 100 A at rated voltage. Resistance: minimum 0.020 Ω, 0.070 Ω maximum one hour after tripping. Tripped, it dissipates typically 1.0 W. It operates from -40 to +85 °C.
Construction: outline 4.73 x 3.41 x 0.90 mm (max.); castellated (notched) terminals; pure tin terminations.
| Category | |
| Manufacturer | OptiFuse |
| Model | R1812 |
| Hold Current (A) | 2.00 |
| Trip Current (A) | 3.50 |
| Max Voltage | 8 VDC |
| Max Fault Current (A) | 100 |
| Time to Trip | max. 2.000 s at 8.0 A |
| Power Dissipation (W) | 1.0 |
| Min Resistance (Ω) | 0.020 |
| Max Resistance 1 h After Trip (Ω) | 0.070 |
| Mounting Style | Surface Mount |
| Package / Case | 1812 (4532 metric) |
| Termination Style | Castellated (notched) |
| Size | 4.73 x 3.41 x 0.90 mm (max.) |
| Lead Material | Pure tin terminations |
| Operating Temperature (°C) | -40 to +85 |