0154001.DR

Manufacturer

Littelfuse

Model

0154001.DR

Category

protection_devices

›fuses

›One-Time Fuse

The Littelfuse 0154001.DR is a 50A SMD fuse with integrated holder designed for overcurrent protection in low-voltage circuits. It features 1A current rating, 125V AC/DC voltage rating, and disposable design, making it suitable for consumer electronics, automotive, and industrial applications. Key considerations include soldering at low temperatures, thermal management with 0.05°C/W resistance, and avoiding reverse polarity. Alternative models match critical parameters within 5% tolerance. Engineers should prioritize thermal vias in layout and verify compatibility with 0805/1206 footprints. Market strengths include high interrupt rating and ROHS compliance, while limitations are voltage range and cost. This product is ideal for protection in renewable energy systems and medical devices requiring reliable current limiting.

Reference Pricing

1+ :$1.2838

10+ :$1.0948

30+ :$0.8806

100+ :$0.7532

500+ :$0.763

Reference Stock

Available:1884

Specifications

color	Not specified
dimensions	Not specified
fusing_characteristics	Not specified
interrupting_time	Not specified
operating_temperature_range	-55°C to 125°C
package_type	ReelPack
rated_current	1A
rated_voltage	Not specified

Function And Role

Core Function

Overcurrent protection in low-voltage circuits

Key Characteristics

50A interrupt rating
1A current rating
125V AC/DC voltage rating
SMD packaging with integrated holder
Disposable design
ROHS compliance

Application Domains

Basic Scenarios

Consumer electronics power supply protection
Automotive circuit protection
Industrial control systems

Extended Scenarios

Renewable energy system inverters
Medical device power management
Automotive battery management systems

Precautions

Soldering	Use fine pitch soldering tools and avoid thermal shock
Current Limit	Max continuous current: 1A
Voltage Limit	Max system voltage: 125V AC/DC
Thermal Management	Thermal resistance: 0.05°C/W
Storage	Store in <10% relative humidity, -40°C to +85°C
Risk Warnings	Avoid reverse polarity installation Do not exceed 125V operating voltage Not suitable for high-frequency switching circuits

Alternative Model Params

Interrupt rating (50A±5%)
Voltage tolerance (±10% of 125V)
Current tolerance (±5% of 1A)
Packaging dimensions (9.7x5mm±0.2mm)
Operating temperature range (-55°C to +125°C)

Design Recommendations

Layout	Maintain 3mm clearances from heat sources
Thermal	Use thermal vias for heat dissipation
Compatibility	Verify with 0805/1206 footprints
Testing	Test under 1.5x rated current for 1 minute

Market Positioning

Strengths	High interrupt rating for demanding applications Compact design for space-constrained devices ROHS compliance for eco-friendly designs
Weaknesses	Limited to 125V voltage range Higher cost per unit vs standard fuses Not suitable for high-frequency circuits

Datasheet

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Distributors

Shenzhen Dongxing Microelectronics Technology Co., Ltd.