Intertechnik PTC Semiconductor – SE020

The Intertechnik PTC Semiconductor – SE020 is a robust and reliable positive temperature coefficient thermistor designed to safeguard your valuable audio circuits from the damaging effects of overcurrent. This self-resetting component offers a modern alternative to traditional fuses, automatically restoring normal operation once a fault condition has cleared, thereby minimising downtime and the inconvenience of manual replacements. Its compact form factor makes it an ideal choice for a wide range of applications, from protecting loudspeaker crossover networks and power amplifiers to securing sensitive electronic parts in DIY audio projects and professional sound equipment. When an excessive current flows, the SE020’s internal resistance rises sharply, effectively limiting the current to a safe level. Once the fault is removed and the device cools, it automatically resets, returning to its low-resistance state. This PTC thermistor boasts a fast response time and high reliability, ensuring consistent protection over many cycles. With its durable construction and precise thermal characteristics, the SE020 is an essential component for any audio enthusiast or technician seeking to enhance the longevity and safety of their electronic assemblies.