What is a telecom PTC device? Telecom PTC devices are designed to protect telecom equipment against short duration high voltage fault currents generated from lightning and power cross conditions. Telecommunication PTC Devices are available in surface mount and radial leaded configurations. PTC telecom device holding currents range from 0.055 amps to 0.400 amps. Maximum operating voltages range from 60 to 250 VDC and maximum interrupting voltages range from 250 to 600 VAC. The telecommunication PTC devices help telecom equipment meet the protection requirements specified in Telcordia GR-1089 and UL 60950/EN60950/IEC60950 standards plus the ITU K.20, K.21 and K.44 requirements. All telecom PTC device series are lead free and RoHS Compliant.

Key parameters for the telecom PTC devices offerings are as follows:

PTC Series	Style	Hold Current	Max Operating VDC	Max Interrupt Vac	Max Fault Current
TCF250	Chip	0.09 to 0.18A	60V	250V	3A
250S	SMT	0.130A	60V	250V	3A
TS250	SMT	0.13A	60V	250V	3A
TSL250	SMT	0.8 to 0.13A	60 to 80V	250V	3A
TSV250	SMT	0.13 to 0.184A	60 to 100V	250V	3 to 10A
250R	Radial	0.08 to 0.18A	60V	250V	3 to 10A
TRF250	Radial	0.055 to 0.184A	60 to 100V	250V	3 to 10A
TS600	SMT	0.17 to 0.40A	60V	600V	3A
TSM600	SMT	0.25 to 0.40A	250V	600V	3A
600R	Radial	0.15 to 0.16A	60V	600V	3A
TRF600	Radial	0.15 to 0.40A	60 to 250V	250V	3A	10A

telecom ptc device