A1220UA4 Datasheet - Littelfuse

A1220UA4 SIDACtor Protection Thyristors

Asymmetrical Multiport Series are SIDACtor® devices designed to protect LCAS (Line Circuit Access Switch) devices from damaging overvoltage transients. The series provides a specialized asymmetrical dual port overvoltage protection solution that enables equipment to comply with various global requla.

A1220UA4 Features

* and Beneﬁts t Low voltage overshoot t Low on-state voltage t Does not degrade with use t Fails short circuit when surged in excess of ratings t Replaces four discrete devices t Two-port protection t LCAS speciﬁc tip and ring thresholds Applicable Global Standards t TIA-968-A t TIA-968-B

A1220UA4-Littelfuse.pdf