This application note introduces ST’s new high-temperature TRIAC family suitable for many high temperature applications, such as vacuum cleaners. These TRIACs can operate in ambient temperatures up to 150 °C. The design of TRIACs operating at high temperature requires special attention to the turn-off capability. In this application note, we first describe the turn-off behavior of TRIACs, then briefly explain how to optimize the turn-off capability. Finally, we present the performance of a new 12 A, 600 V device and compare it with other high-temperature TRIACs available on the market today, under extremely severe temperature conditions as can appear in vacuum cleaners.
This document introduces a new family of high-temperature TRIACs capable of operating up to 150 °C, specifically designed to optimize vacuum cleaner designs. The note explains how these devices reduce heatsink bulk and improve reliability in hot environments.
| Maximum Junction Temperature | 150 °C |
|---|---|
| Device Current Rating | 12 A |
| Device Voltage Rating | 600 V |
The new high-temperature TRIAC family is able to work up to a 150 °C junction temperature in steady-state.
The turn-off capability of the new family is approximately four times higher than previous Snubberless devices.
Yes, the specified (di/dt)c is guaranteed whatever the reapplied (dV/dt)c, so there is no need to add an R-C snubber circuit.