Teccor Electronics SIDACtor Datasheet

Category: Electronics, Littelfuse Inc, Trigger Devices

Overview

The datasheet provided outlines the specifics of Teccor Electronics’ SIDACtor devices, which are transient overvoltage protectors with clamping voltage ranges from 27 to 540 volts. These components are designed to be connected between the high side of a circuit and a common ground to protect electronic equipment from voltage spikes and transients, such as those caused by lightning or line disturbances.

Functionality

Under normal circuit conditions, the SIDACtor maintains a high off-state impedance with leakage current less than 5 microamperes. However, when the voltage exceeds the SIDACtor’s specified breakover point, it rapidly transitions to a conducting state in nanoseconds, clamping the excess voltage. It will continue to conduct until the current drops below the device’s minimum holding current or is otherwise interrupted. Notably, SIDACtors do not degrade over time, even with repeated surges within their rated limits. In cases of extreme surges that exceed the device’s rated I_PP or I_TSM, SIDACtors will fail as a short circuit, providing a fail-safe mode.

Applications

The SIDACtor is positioned as a superior alternative to traditional voltage protection devices like zener diodes, gas discharge tubes, and metal-oxide varistors (MOVs). Due to its fast response time and robust design, it can protect sensitive electronics in telecommunications, computing, and instrumentation from damaging high-voltage transients. The bidirectional capability of the SIDACtor is especially useful for AC circuits, offering protection regardless of the direction of the transient voltage spike.

Features

Key features include bidirectional transient voltage protection, clamping speeds measured in nanoseconds, patented multiple-chip packages for comprehensive circuit leg protection, electrically isolated packages for safe integration, robust surge current handling from 50 to 100 amps (10×1000μs waveform), and glass-passivated junctions for reliability and performance endurance.

Additional Information

The datasheet mentions the availability of the SIDACtor in various packages, including the TO-92, DO-214AA, and a modified TO-220 version. Tape-and-reel packaging options are available for TO-92 and TO-220 packages, with embossed carrier reel packaging for the DO-214AA package. Customers are encouraged to reach out to Teccor Electronics for more information on these options.