Teccor's alternistor is a bidirectional thyristor with current ratings from 6 A to 40 A and voltages from 200 V to 1000 V. The alternistor is specifically designed for applications that switch highly inductive loads.
The Teccor Alternistor Triac family provides bidirectional thyristor devices with current ratings from 6 A to 40 A and voltage ratings from 200 V to 1000 V. They feature glass‑passivated junctions, 2500 V rms isolation (standard) and a special chip that mimics two SCRs in inverse parallel for improved turn‑off behavior.
The document includes detailed electrical specifications, test conditions, package dimensions (TO‑220, TO‑218, TO‑218X, etc.), thermal resistance data, and gate‑trigger characteristics. All measurements are at 60 Hz with a resistive load unless otherwise noted.
| Current rating | 6 A to 40 A |
|---|---|
| Voltage rating | 200 V to 1000 V |
| Isolation voltage (standard) | 2500 V rms |
| Operating temperature range | -40 °C to +125 °C |
| Gate trigger current (IGT) for 6 A‑12 A | 200 mA |
The standard isolation voltage rating is 2500 V rms from leads to the mounting tab.
They operate from –40 °C up to +125 °C.
A gate trigger current of 200 mA is required.