1812L010DR – LITTELFUSE

Part Number:

1812L010DR

Manufacturer:

LITTELFUSE

Date Code:

06+

RoHS:

RoHS Compliant

MSL:

COO:

CHINA

Description:

0.1 A PTC Resettable Fuse, 30 VDC, 1.6 Ω, 1812 SMD

Datasheet:

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Stock Quantity: 1348

Selling Unit: Each

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1348 in stock

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Product Details:

Overview

The Littelfuse 1812L010DR is a polymeric PTC resettable fuse designed for robust overcurrent protection in low-voltage DC circuits. Its primary function is to limit fault currents by transitioning from a low resistance state to a high resistance state when the current exceeds its trip threshold, effectively acting as a self-resetting circuit breaker. A critical design consideration is the trade-off between holding current (Ih) and trip time; selecting a device with a higher Ih provides greater operational margin but may delay fault interruption, potentially impacting downstream component longevity during sustained overcurrent events.

Key Features

Maximum Voltage Rating: 30V DC
Hold Current (Ih): 100 mA
Trip Current (It): 300 mA
Maximum Fault Current: 100 A
Initial Resistance (Ri): 1.6 Ohms (Min)
Package: 1812 (4532 Metric), 4.55mm x 3.24mm x 1.25mm

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

Overcurrent protection for USB power delivery ports
Fault current limiting in battery management systems
Protection of sensitive sensor interfaces in industrial automation
Current surge suppression in portable electronic devices