QTT1223ST1

Triac, SCR Output Optoisolators Overview

The QTT1223ST1 is a single-channel power Triac output optoisolator manufactured by QT Brightek. It features a 7-SMD package with鸥翼 (gull-wing) leads and provides 5000Vrms isolation voltage. The device supports a maximum forward DC current of 50 mA and an RMS on-state current of 900 mA. It operates within a temperature range of -55°C to 85°C and includes a zero-crossing circuit for noise reduction.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a high-power Triac output stage capable of handling significant load currents
• Incorporates internal zero-crossing detection to minimize electromagnetic interference during switching
• Provides robust electrical isolation between input and output circuits

Triac, SCR Output Optoisolators Applications

• Solid-state relay modules requiring random-phase or zero-crossing control
• AC motor speed control systems
• Industrial process control interfaces

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix ST1 against the manufacturer's latest datasheet to confirm pinout compatibility and packaging type. Ensure that the required isolation voltage rating meets the safety standards of the target application environment. Cross-reference the RoHS compliance status with regional regulatory requirements before finalizing procurement orders.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing functionality is required to reduce inrush current and EMI in AC loads. Compare the 900 mA RMS current rating against peak load demands. Consider the 7-SMD footprint constraints versus alternative DIP packages if board space is limited. Verify thermal management needs for continuous operation at rated current.

Triac, SCR Output Optoisolators Part Context

This part belongs to the QTX213 series of optoisolators from QT Brightek. It is designed for applications requiring reliable isolation and controlled switching of AC power devices. The series typically offers various current ratings and package options to suit different industrial and consumer electronics designs.

Triac, SCR Output Optoisolators Replacement Considerations

Check for direct substitutes within the QTT22xx series from the same manufacturer. Verify equivalent isolation voltage and current ratings when considering cross-brand alternatives.