Electronic Products & Technology

Integrated fuse delivers compact overvoltage protection

Stephen Law   

Circuit Protection Electronics overvoltage overvoltage protection protection varistors varistors

TDK EPCOS ThermoFuse NT14 and NT20 series of fuse protected varistors provide compact overvoltage protection and a footprint that fits into existing circuit board layouts. NT14 series (disk diameter 14mm) absorb maximum surge currents with an 8/20-μs pulse of 6kA at rated voltages of between 130VRMS and 680VRMS. NT20 series (disk diameter 20mm) has a surge current capability with an 8/20-μs pulse of 10kA at rated voltages of between 130VRMS and 750VRMS. Devices deliver a maximum energy absorption of up to 220J and 480J for 2ms, respectively. Both series are available in 2-leaded and 3-leaded types, with the third lead used to monitor whether the fuse has been activated.


Stories continue below

Print this page

Related Stories