www.DataSheet4U.com
2322 66. 9....
Vishay BCcomponents
PTC Thermistors, Overload Protection For Telecommunication
FEATURES
PRIMARY PROTECTION (OPTIONAL) +θ PTC subscriber lines +θ SECONDARY PROTECTION +θ PTC voltage clamp +θ PTC MDF SUBSCRIBER LOOP INTERFACE CIRCUIT (SLIC) OR TRANSFORMER
• • • • • • • •
CCB913
Typical telephone line showing where PTC thermistors can be used for overcurrent protection.
Wide resistance range in telecom area 4... to 70 Ω Fast protection against power contact faults Withstand high overload currents of up to 10 A High voltage withstanding capabilities for the larger sized thermistors Good tracking over a wide temperature range for all matched or binned types UL1434 approved types available (XGPU2) Excellent stability over extended time All telecom PTCs are coated with a high temperature silicon lacquer (UL94V0) to protect them from any harsh environments and to improve their lifetime.
APPLICATIONS
• • • • Main Distribution Frame (MDF) Central Office .