1

E9

General Description

The sidac is a silicon bilateral voltage triggered switch with

greater power-handling capabilities than standard diacs. Upon

application of a voltage exceeding the sidac breakover voltage

point, the sidac switches on through a negative resistance region

to a low on-state voltage. Conduction continues until the current

is interrupted or drops below the minimum holding current of the

device.

Suntac’s sidacs feature glass-passivated junctions to ensure a

rugged and dependable device capable of withstanding harsh

environments.

Variations of devices covered in this data sheet are available for

custom design applications. Consult the factory for more informa-

tion.

Applications

•

High-voltage lamp ignitors

•

Natural gas ignitors

•

Gas oil ignitors

•

High-voltage power supplies

•

Xenon ignitors

•

Overvoltage protector

•

Pulse generators

•

Fluorescent lighting ignitors

•

HID lighting ignitors

Features

•

AC circuit oriented

•

Glass-passivated junctions

•

High surge current capability

TO-92

Type 70

DO-214

Surface Mount

TO-202

DO-15X

STC SIDAC Series