Littelfuse Introduces Pxxx1DF-1 and Pxxx1DF-1E Series Fixed Voltage Protection SIDACtor® Devices That Protect SLICs from Damaging Overvoltage Transients

14th September 2010
ES Admin
Littelfuse, Inc. (NASDAQ/NGS:LFUS) has introduced two new series of SIDACtor devices that protect sensitive SLICs (Subscriber Line Interface Circuits) from damaging overvoltage transients caused by lightning and AC power faults. The Pxxx1DF-1 and Pxxx1DF-1E Series Fixed Voltage Protection SIDACtor® devices enhance the reliability of telecom equipment by providing single-port (both tip and ring) protection in a single package.
Unlike programmable solutions, the new series do not require a large and costly gate capacitor, and offer complete single-port overvoltage protection with a single device. The series use a fixed-voltage switching device to protect against both positive and negative induced surge events without the need of additional external components.

The series are a cost effective overvoltage-protection solution for telecom equipment OEMs that design and/or build equipment that utilizes SLIC chipsets. The series help equipment manufacturers meet or exceed global regulatory standards such as Telcordia GR-1089 Issue 4 or 5, and ITU Recommendations K.20, K.21, K.44, and K.45.

The new SIDACtor devices will be of interest to any telecom OEM or manufacturer that designs or builds equipment that utilizes SLIC chipsets such as voice line cards, integrated access devices, multi-service access network equipment, VoIP (voice over IP) phones, STB, and VoIP terminals and gateways.

Part of the SLIC (Subscriber Line Interface Circuit) Protection family of SIDACtor products, the new devices have many features and benefits. The surface-mount MS-012 package has a small footprint. The pin-to-pin footprint is compatible to industry-preferred programmable SO-8 package SLIC. The devices have a low overshoot voltage during surge events, fail short-circuit when surged in excess of ratings, and they do not degrade in use.

The Pxxx1DF-1 and Pxxx1DF-1E Series Fixed Voltage Protection SIDACtor® devices are RoHS compliant and comply with the following global standards:
# TIA-968-A
# ITU K.20/21 Basic & Enhanced (series resistance required)
# GR 1089 Inter/Intra-Building
# IEC 61000-4-5
# YD/T 1082
# YD/T 993
# YD/T 950
# UL Recognized

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