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0157001.DR

Manufacturer

Littelfuse

Model

0157001.DR

Category

protection_devices
fuses

The Littelfuse 0157001.DR is a 1A/50A SMD disposable fuse designed for overcurrent protection in compact electronics. Its -55°C to +125°C operating range and 6.5x3.7mm package make it suitable for consumer devices, automotive systems, and industrial controls. Critical parameters include interrupt rating, current limit, and thermal performance, with design considerations emphasizing PCB layout optimization and thermal management. Market strengths lie in reliability and compliance, while limitations include voltage range and cost. This fuse is ideal for low-voltage applications requiring reliable protection in space-constrained environments.

Reference Pricing

1+ :$2.0664
10+ :$1.5596
30+ :$1.1872
100+ :$0.9394
500+ :$1.057
1500+ :$0.973

Reference Stock

Available:145

Specifications

colorSpecific color not provided
dimensionSpecific dimensions not provided
fusing characteristicX
interrupting time4 hours
operating temperature range-55°C to 125°C
package typeSurface Mount
rated current0.062A
rated voltage125V

Function And Role

Core Function

Overcurrent protection in low-voltage circuits

Key Characteristics

  • 50A interrupt rating
  • 1A current rating
  • SMD package (6.5x3.7mm)
  • ROHS compliant
  • Operating temperature range: -55°C to +125°C

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
  • Telecom infrastructure

Precautions

Soldering

Use reflow soldering at 220-250°C with 20-30s peak time

Current Limit

Max continuous current: 1A (transient up to 50A)

Voltage Limit

Max operating voltage: 32VDC/24VAC

Thermal Management

Thermal resistance: 50°C/W

Storage

Store in <10% RH, 15-25°C environments

Risk Warnings
  • Avoid static discharge damage
  • Do not exceed 125°C ambient during soldering
  • Verify polarity before installation

Alternative Model Params

  • Interrupt rating (40-60A)
  • Current rating (0.5-2A)
  • Operating temperature (-40°C to +150°C)
  • Package size (SMD 5x3mm to 8x5mm)

Design Recommendations

Layout

Maintain 5mm trace width for power paths

Thermal

Use copper pour areas for heat dissipation

Compatibility

Test with 0.8mm thick PCBs

Testing

Perform 5000 cycle life tests at 1.1x rated current

Market Positioning

Strengths
  • High reliability in transient protection
  • Compact SMD package saves PCB space
  • RoHS compliant for eco-friendly designs
Weaknesses
  • Limited to low-voltage applications (<32V)
  • Higher cost vs through-hole fuses
  • Stock availability during peak seasons

Datasheet