This family of telecommunication and networking
devices was initially designed to meet the growing
demand for resettable overcurrent protection. These
product families help provide protection against
damage caused by power cross and power induction
surges as defined in ITU, Telcordia GR1089, and
UL60950. Available in chip, surface-mount, and radialleaded configurations, TE’s PolySwitch devices help
improve the reliability of customer premise and network
equipment world wide.

Benefits
• Many product choices give engineers more design
flexibility
• Compatible with high volume electronics assembly
• Assist in meeting regulatory equipment requirements
• Improved line balance
• Applicable for legacy POTS and modern digital
communications equipment

Features
• RoHS compliant
• Resettable overcurrent protection
• Surface-mount, radial-leaded, and chip form factors
• Fast time-to-trip
• Agency recognition: UL, CSA, TÜV
• Resistance sorted and matched devices available
• Low parasitic capacitance/flat impedance with
frequency

Applications
• Modems
• Phone sets
• Fax machines
• Phone wall outlets
• Alarm systems
• PBX systems
• MDF modules
• Analog and digital line cards
• T1/E1 equipment
• xDSL modems and splitters
• Powered ethernet systems
• VoIP (Voice over Internet Protocol) equipment
• LAN, WAN equipment
• Customer premise equipment
• Access network hardware