TG25C40

Overview

The SanRex TG25C40 is an isolated molded triac with a repetitive peak off-state voltage of 400 V and an RMS on-state current rating of 25 A. It features a maximum peak on-state voltage of 1.6 V, a gate trigger current range of 3 mA to 30 mA, and a holding current of 30 mA. The device supports a surge on-state current of 250 A for one cycle at 50/60 Hz and has a thermal impedance from junction to case of 0.5 °C/W. Operating within a junction temperature range of -25 °C to +125 °C, it includes an isolation breakdown voltage of 2500 Vrms.

Feature Summary

• Isolated mounting design providing AC 2500V insulation
• High surge capability rated at 250A for non-repetitive conditions
• Tab terminal configuration for direct screw mounting

Applications

• Copier mechanisms
• Microwave oven controls
• Solid state switches
• Motor control systems
• Light control circuits
• Heater control units

Procurement Notes

Verify the specific part number suffix against official SanRex documentation to confirm electrical ratings and package variations. Ensure that any ordering suffixes do not alter the fundamental function or isolation characteristics unless explicitly stated in the manufacturer's datasheet. Cross-reference the component details with authorized distributor specifications to validate authenticity and technical compliance before finalizing procurement orders.

Selection Notes

Select this component based on its 400V blocking voltage and 25A continuous current capacity. Consider the 250A surge rating for applications involving high inrush currents. Verify that the required isolation voltage meets system safety standards. Evaluate the thermal management requirements relative to the specified junction-to-case thermal impedance and operating temperature limits.

Part Context

This component belongs to the TG25C/E/D series of isolated molded triacs manufactured by SanRex. The series shares common physical dimensions and mounting styles while varying in voltage ratings. The TG25C40 specifically denotes the 400V variant within this family of power switching devices designed for general purpose AC load control.

Replacement Considerations

SanRex TG25E60 (600V rating)

FAQ

What is the critical rate of rise of on-state current (di/dt) for the TG25C40?

The critical rate of rise of on-state current is 50 A/µs.

Does the TG25C40 support logic level triggering?

No, the datasheet does not list logic level compatibility; it requires a gate trigger current up to 30 mA.

What is the recommended mounting torque for the M4 bolt?

The recommended mounting torque is between 1.0 and 1.4 N·m.