TS420-700T

Scrs Overview

The STMicroelectronics TS420-700T is a three-terminal triac switch element designed for AC power control applications. It features a 4 A RMS on-state current rating and a repetitive peak off-state voltage of 700 V. The device utilizes a sensitive gate architecture, requiring a maximum gate trigger current of 10 mA and a gate trigger voltage of 1.3 V. It is housed in a TO-220AB through-hole package with three pins. The component supports a non-repetitive surge current of 31 A at 50/60 Hz and operates within a junction temperature range of -40°C to 125°C.

Scrs Feature Summary

• Sensitive gate configuration enabling reliable triggering with low gate drive currents.

Scrs Applications

• Motor control for hand tools
• Kitchen aid appliances
• Overvoltage crowbar protection for low power supplies

Scrs Procurement Notes

Verify the specific suffix 'T' against official STMicroelectronics documentation to confirm the exact tape-and-reel packaging quantity and variant designation. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the full part number with the latest datasheet revision to confirm compliance with RoHS3 standards and availability status before finalizing orders.

Scrs Selection Notes

Select this component when an application requires a robust 4 A AC switching capability with a 700 V blocking voltage in a standard through-hole form factor. The sensitive gate characteristic makes it suitable for circuits where the available gate drive current is limited, such as microcontroller outputs without dedicated high-current drivers. Consider thermal management requirements for the TO-220 package based on the expected RMS load current and ambient conditions.

Scrs Part Context

The TS420-700T belongs to the T4 series of thyristors and triacs from STMicroelectronics. This family is engineered for general-purpose AC switching tasks. The device integrates the silicon structure necessary for bidirectional current flow, controlled by a single gate terminal. It is part of a broader portfolio that includes variants with different voltage ratings and package options to suit diverse industrial and consumer electronics needs.

Scrs Replacement Considerations

Officially documented substitutes include the T410-700T. Verify pinout compatibility and electrical parameter equivalence before substitution.