POLYSWITCH RESETTABLE
DEVICES
Telecommunications and Networking Devices
The PolySwitch families of telecommunications and
networking devices help 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 radial-leaded configurations,
Littelfuse’s PolySwitch devices help improve the reliability
of customer premise and network equipment worldwide.
BENEFITS
APPLICATIONS
• Choice of many product options helps engineers by
improving design flexibility
• Modems
• Phone sets
• Compatible with high-volume electronics assembly
• Assist in meeting regulatory equipment requirements
• Help improve line balance
• Fax machines
• Phone wall outlets
• Alarm systems
• Applicable for legacy POTS and modern digital
communications equipment
• PBX systems
• MDF modules
• Analog and digital line cards
• T1/E1 equipment
FEATURES
• RoHS compliant
• xDSL modems and splitters
• Powered ethernet systems
• VoIP (Voice over Internet Protocol) equipment
• LAN, WAN equipment
• Customer premise equipment
• Access network hardware
• 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
RoHS
232
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2018 Littelfuse, Inc.