TYN412RG

Scrs Overview

The TYN412RG is a standard gate triggering Silicon Controlled Rectifier (SCR) rated for 12 A RMS on-state current and 400 V blocking voltage. It operates within a junction temperature range of -40 to +125 °C and features a TO-220AB package. Key electrical characteristics include a maximum gate trigger current of 15 mA, a typical gate trigger voltage of 0.7 V, and a critical rate of rise of on-state current of 100 A/µs. The device provides a non-repetitive surge peak on-state current of 146 A at 8.3 ms.

Scrs Feature Summary

• Standard gate triggering levels suitable for diverse control modes
• High thermal robustness with low junction-to-case thermal resistance
• ECOPACK compliant lead-free construction

Scrs Applications

• Overvoltage crowbar protection circuits
• Motor control in power tools and kitchen appliances
• Inrush current limiting applications
• Capacitive discharge ignition systems
• Voltage regulation circuits

Scrs Procurement Notes

Verify the specific ordering code TYN412RG against the official ST datasheet to confirm the tube packing mode and TO-220AB package configuration. Ensure that the application environment remains within the specified operating junction temperature limits and that thermal management aligns with the provided derating curves. Confirm compliance with ECOPACK environmental standards if required by the design specifications.

Scrs Selection Notes

Select this component when a standard gate SCR is required for high-current switching applications up to 12 A. Consider the 400 V rating for medium-voltage AC or DC control scenarios. Evaluate the thermal performance using the provided junction-to-case resistance values to ensure adequate heat sinking. Verify that the gate drive circuitry can supply the necessary trigger current and voltage without exceeding the peak gate power dissipation limits.

Scrs Part Context

The TYN412 belongs to STMicroelectronics' standard SCR series designed for general-purpose industrial and consumer electronics. It complements other thyristor devices by offering a balance of current handling capability and standard gate sensitivity. The TO-220AB package facilitates through-hole mounting, making it suitable for applications requiring robust mechanical attachment and efficient heat dissipation.

Scrs Replacement Considerations

Consult official ST documentation for verified cross-reference part numbers before substitution. Ensure any alternative device matches the 12 A current rating, 400 V voltage rating, and TO-220AB package dimensions. Verify compatibility with existing gate drive requirements and thermal management solutions.