Polymeric PTC Resettable Fuse 60V 500 mA Ih Surface Mount 2-SMD 500mA resettable fuse pptc
The SMD050F-2 is a surface-mount resettable fuse (PPTC – Polymer Positive Temperature Coefficient) designed to provide overcurrent protection in low-voltage electronic circuits. It operates by increasing its resistance significantly when excessive current flows, thereby limiting current and protecting downstream components. Once the fault condition is removed and the device cools, it automatically resets to its low-resistance state, enabling normal operation without replacement.
This component is commonly used in power supply lines, USB ports, battery-powered devices, and general electronic protection applications where space-saving and reliability are important.
Key Features
Resettable overcurrent protection (self-recovering)
Surface-mount package for compact PCB layouts
Low resistance in normal operation
Fast response to fault conditions
Automatic reset after fault removal
RoHS compliant and lead-free
Electrical Characteristics
Hold current: 0.5 A
Trip current: 1.0 A (typical)
Maximum voltage: 60 V
Maximum current: 40 A (fault current rating)
Initial resistance: low resistance range suitable for minimal voltage drop
Resistance after trip: significantly increased to limit current
Thermal Characteristics
Operating temperature range: -40°C to +85°C
Trip time dependent on applied current and ambient temperature
Reset time dependent on cooling conditions
Mechanical Characteristics
Package type: Surface-mount (SMD)
Compact footprint suitable for dense PCB layouts
Compatible with standard reflow soldering processes
Applications
USB and peripheral port protection
Power supply and DC line protection
Battery pack protection
Consumer electronics
Industrial control circuits
Compliance and Standards
RoHS compliant
Halogen-free (depending on manufacturer variant)
Meets industry standards for resettable fuses
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