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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 | RS90-040 |
| Description | PTC Fuse; 0.40 A; 72/90 VDC |
| Datasheet | Download Datasheet |
The OptiFuse RS90-040 is a 400 mA hold radial-lead resettable PTC fuse, rated 72/90 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 800 mA, in max. 3.8 s at 5 x IH.
It withstands a fault current of up to 40 A at rated voltage. Resistance: minimum 0.55 Ω, 1.29 Ω maximum one hour after tripping. Tripped, it dissipates typically 0.56 W. It operates from -40 to +85 °C.
Construction: outline 7.6 W x 13.5 H x 3.1 T mm (max.); lead spacing 5.1 mm; leads 24 AWG (0.51 mm); tin plated copper.
| Category | |
| Manufacturer | OptiFuse |
| Model | RS90 |
| Hold Current (A) | 0.40 |
| Trip Current (A) | 0.80 |
| Max Voltage | 72/90 VDC |
| Max Fault Current (A) | 40 |
| Time to Trip | max. 3.8 s at 5 x IH |
| Power Dissipation (W) | 0.56 |
| Min Resistance (Ω) | 0.55 |
| Max Resistance 1 h After Trip (Ω) | 1.29 |
| Mounting Style | Radial Lead (Through-Hole) |
| Size | 7.6 W x 13.5 H x 3.1 T mm (max.) |
| Lead Spacing | 5.1 mm |
| Lead Size | 24 AWG (0.51 mm) |
| Lead Material | Tin plated copper |
| Operating Temperature (°C) | -40 to +85 |