Manufacturer Part Number
MRL
Manufacturer
Littelfuse
Introduction
MRL is a fuse designed for overcurrent protection in electronic applications, from Littelfuse's NANO²® 452 series.
Product Features and Performance
Surface mount fuse
Slow Blow characteristic
Suitable for board mount
SMD, Square End Block package
Compatible with reflow and wave solder
Product Advantages
High current rating of 4A
Both AC and DC voltage rating of 125V
Breaking capacity of 50A at rated voltage
Low DC cold resistance of 0.0186 Ohms
Operating temperature range from -55°C to 125°C
Key Technical Parameters
Current Rating (Amps): 4A
Voltage Rating - AC: 125V
Voltage Rating - DC: 125V
Response Time: Slow Blow
Breaking Capacity @ Rated Voltage: 50A
Melting I²t: 34.4
DC Cold Resistance: 0.0186 Ohms
Quality and Safety Features
Approval Agency: CSA, PSE, UR
Compatibility
Packaged in Tape & Reel (TR) for automated assembly
Suitable for a wide range of electronic circuits
Application Areas
Electronic devices requiring circuit protection
Power supply units
Battery chargers
Consumer electronics
Product Lifecycle
Active status, not nearing discontinuation
Current model with support and availability
Several Key Reasons to Choose This Product
Trusted manufacturer in circuit protection, Littelfuse
Robust overcurrent protection for both AC and DC circuits
Compatible with high-temperature environments
Offers slow blow feature for inrush current protection
Approved by multiple safety standards for global use
Designed for easy integration into automated manufacturing processes
