# Why is TRIAC's operation unstable when connected to small loads?

Latest Updated:04/01/2008

## Question:

I am using the triac, but its operation is unstable when connected to small loads. Why is this so?

The minimum current of the triac is defined as holding current that is the minimum on-state current at which the ON state can be maintained. Holding current of a product with large rated RMS on-state current is large. If a product with a large rated RMS on-state current is used with a small load, the on-state current falls below the holding current, causing malfunctioning.
Use a product with a small holding current.
Suitable Products
• 本文是否實用？