TRF250-120T

Product Summary

Benefit:
1 Many product choices give engineers more design flexibility
2 Compatible with high volume electronics assembly
3 Assist in meeting regulatory equipment requirements
4 Improved line balance
5 Applicable for legacy POTS and modern digital communications equipmen

Application
1 Modems
2 Phone sets
3 Fax machines
4 Phone wall outlets
5 Alarm systems PolySwitch Resettable Devices Telecommunications & Networking Devices Benefits Features
Applications
6 PBX systems
7 MDF modules
8 Analog and digital line cards
9 T1/E1 equipment
10 xDSL modems and splitters
11 Powered ethernet systems
12 VoIP (Voice over Internet Protocol) equipment
13 LAN, WAN equipment
14 Customer premise equipment
15 Access network hardwar

Parametrics

(1)IH : Hold current: maximum current device will pass without interruption in 20C still air.
(2)IT : Trip current: minimum current that will switch the device from low resistance to high resistance in 20C still air.
(3)VMAX Operating : Maximum continuous voltage device can withstand without damage at rated current. This voltage is used for component recognition under UL1434.
(4)VMAX Interrupt : Maximum voltage that can be safely placed across a device in its tripped state. Devices have been designed to trip safely under higher level power cross conditions;
(5)to assist equipment in meeting the appropriate ITU, UL60950, or GR1089 industry requirements.
(6)IMAX Interrupt : Maximum fault current device can withstand without damage at rated operating voltage. This current is used for component recognition under UL1434.
(7)Devices have been designed to trip safely under higher level power cross conditions to assist equipment in meeting the appropriate ITU, UL60950, or GR1089;
(8)industry requirements.
(9)PD : Power dissipated from device when in the tripped state in 20C still air.
(10)RMIN : Minimum resistance of device as supplied at 20C unless otherwise specified.
(11)RMAX : Maximum resistance of device as supplied at 20C unless otherwise specified.
(12)R1MAX : Maximum resistance measured one hour post-trip or post-reflow at 20C.
(13)250VAC interrupt products are designed to help equipment pass ITU K.20, K.21, & K.45 recommendations and Telcordia GR-1089 Port Type 2 & 4 requirements.
(14) 600VAC interrupt products are designed to help equipment pass UL60950, TIA-968-A and GR1089 Port Type 1, 3 & 5 requirements.

Features

(1) RoHS compliant;
(2) Resettable overcurrent protection;
(3) Surface-mount, radial-leaded, and chip form factors;
(4) Resistance sorted and matched devices available;
(5) Low parasitic capacitance/flat impedance with;
(6) Agency recognition: UL, CSA, TV;
(7) Fast time-to-trip;
(8) frequence.