Teccor Launches SIDACtor Series of TVS Components

Teccor Electronics (Irving, TX) recently launched a new line of TVS components, the SIDACtor Series. Teccor claims that these components are transparent to the circuits they protect in stand-by mode, exhibiting a high off-state impedance and eliminating excessive leakage currents. Once triggered by voltages in excess of the switching voltage, the SIDACtor component simulates a short-circuit condition until the current falls below the SIDACtor component's holding current. Once completed, the SIDACtor device resets and returns to its high off-state impedance.

The SIDACtor is typically placed behind a slow blow fuse or other current limiting device. The series is rated with Vdrm ranging from 6V to 320V. The surge rating ranges from 50A for a 10 x 560µs event to 500A for a 2 x 10µs event. Peak operating temperatures for the SIDACtor components range from -40 to 150 degrees C.

“Unlike most other surge suppression devices, SIDACtor devices offer absolute surge protection regardless of the surge current present and the rate of applied voltage," commented Phillip Havens, product manager. “In addition, the device can't be damaged by voltage; it eliminates hysteresis and reduces the heat dissipation usually present in a clamping device."

Common applications for Teccor's SIDACtor components include central office line cards, T-1/E-1 and xDSL transmission equipment, customer premises equipment, such as phones modems and caller ID adjunct boxes, and various switches. The SIDACtor components are available in DO-214, TO-92, and TO-220 type 61, two-chip and balanced three-chip packages.