Key facts
- Brand
- STMicroelectronics
- Model
- 440A
- Documents
- 5
- Languages
- EN
- Last added
- 2012-08-06
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STMicroelectronics AN440 Application Note
This document details a method to trigger TRIACs in the second and third quadrants (QII and QIII) using a positive power supply. The proposed circuit utilizes a discharge capacitor and a diode to generate a negative gate current pulse required for triggering these specific quadrants.
Read onlineSTMicroelectronics 440A specifications
| Peak Pulse Power Dissipation | 600 W (10/1000us) |
|---|---|
| Breakdown Voltage Range | From 6.8V to 440 V. |
| Maximum Junction Temperature | 175 °C |
| Storage Temperature Range | -65 to +175 °C |
| Package Type | DO-15 (Plastic) |
All STMicroelectronics 440A documents by type
How to use the product for one specific task, with worked examples.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the minimum gate current pulse width required for this circuit?
The circuit requires a minimum gate current pulse width of 20 us to ensure proper triggering.
What is the maximum latching current for most CW Snubberless TRIACs in quadrants Q1 through Q3?
The maximum latching current is 50 mA for these specific TRIACs and quadrants.
What is the peak pulse power dissipation?
The peak pulse power dissipation is 600 W for a 10/1000us surge.
What types of diodes are available in this series?
The series includes both unidirectional and bidirectional types.
What are the types available in this series?
The series includes both unidirectional and bidirectional types.
Are these diodes UL recognized?
Yes, the Transil diodes are UL recognized.