Description
Littlefuse 3425L250 PTC Resettable Fuse 15V 5A SMD 3425
This product is obsolete. Please use 1812L or 1206L series PTCs for new design opportunities.
The 3425L Series Resettable devices utilze a polymer-based, Positive Temprature Coefficient (PTC) material to protect electrical circuits against overcurrent conditions.
In normal operation, the 3425L Series PTC has many conductive paths and a very low resistance. In an overcurrent condition, the temperature of the polymer material rises. This dramatically reduces the conductive paths resulting in an immediate rise in resistance. In this condition, the device provides circuit protection by significantly limiting the flow of current. However, once the cause of the initial overcurrent condition is eliminated, the 3425L Series PTC cools down and resets to a low resistance value permitting the normal current flow to resume.
The 3425L Series are surface mountable.
Hold Current (A) 2.5
Max Fault Current Rating 40
Trip Current (A) 5
Max Time to Trip Current (A) 8
Max Time to Trip Time (Sec) 25
Max Power Dissipation (W) 1.9
Max Resistance (R1max) (Ohms) 0.1
Minimum Resistance (RIL) (Ohms) 0.035
Max Voltage Rating 15
Manufacturer:Littelfuse
Datasheet:3425L250.pdf
