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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
4,000 pcs
|
4000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
262 pcs
|
262 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Automotive Grade | |
| Current | |
| Hold Current (Ihold) | |
| Length | |
| Max Voltage (Vmax) | |
| Mounting Type | |
| Operating Temperature | |
| Package / Case | |
| Resistance | |
| Resistance - Initial (Rmin) | |
| Tape & Reel | |
| Termination Style | |
| Thickness (Max) | |
| Time to Trip | |
| Type | |
| Voltage | |
| Width |
The Littelfuse 1812L300MR is a polymeric PTC resettable fuse from the 1812L series, designed for surface mount overcurrent protection. It features a hold current of 3 A and a maximum voltage rating of 6 V DC. The initial resistance is 40 mΩ, and the device trips within 4 seconds at rated conditions. The operating temperature range is -40°C to 85°C.
This resettable fuse is housed in a compact 1812 (4532 Metric) concave package measuring 4.55 mm x 3.24 mm with a maximum thickness of 1.50 mm. It is surface mountable and uses SMD/SMT termination. The polymeric PTC technology provides fast response and low resistance for overcurrent protection in space-constrained designs.
Typical applications include USB peripherals, PCI cards, game console port protection, and plug-and-play protection for motherboards and peripherals. The 1812L300MR is RoHS compliant and REACH unaffected, with an MSL rating of 1 (unlimited).
The hold current (Ihold) is 3 A.
The maximum voltage (Vmax) is 6 V DC.
The initial resistance (Rmin) is 40 mΩ.
The time to trip is 4 seconds at rated current.
The operating temperature range is -40°C to 85°C.
It is available in a 1812 (4532 Metric) concave surface mount package.
The part is listed as RoHS3 compliant, but this status is unverified.