TMA34S-L

Overview

The TMA34S-L is a Triac (Bidirectional Triode Thyristor) from the TMA3x series, designed for AC power control applications. It features a peak repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current rating of 3 A at a case temperature of 109°C. The device provides an isolation voltage of 1800 V AC RMS between the lead and case. It utilizes a 3-pin fully molded SIP package with heatsink mounting capability, offering a junction-to-case thermal resistance of 4.5 °C/W. The component operates within a junction temperature range of -40 to 125°C.

Feature Summary

• Small fully-molded SIP package with heatsink mounting for high thermal dissipation
• Increased isolation voltage of 1800 V AC RMS guaranteed for up to 1 minute
• Improved commutation dv/dt performance
• Uniform switching characteristics for full-cycle AC applications

Applications

• Residential and commercial appliances such as vacuum cleaners, rice cookers, TVs, and home entertainment systems
• White goods including washing machines
• Office automation power control and photocopiers
• Motor control for small tools
• Temperature control, light dimmers, electric blankets, and general use switching mode power supplies

Procurement Notes

Verify the specific part number against official manufacturer documentation before procurement. Confirm that the component meets all required electrical parameters for the intended application. Ensure compliance with safety standards and handling precautions due to lethal voltage operation. Check for any updates regarding the 'Not Recommended for New Designs' status in the datasheet.

Selection Notes

Select this component based on its 400 V off-state voltage and 3 A RMS current ratings. Consider the TO-220F package for thermal management requirements. Evaluate the need for improved commutation dv/dt capabilities. Ensure the design accommodates the specified junction temperature range and isolation voltage requirements for safety.

Part Context

The TMA34S-L belongs to the TMA3x series of Triacs manufactured by Sanken Electric. This series is characterized by enhanced reliability and uniform switching. The TMA34 variant specifically offers a 400 V rating, while the TMA36 variant provides 600 V. Both share similar packaging and thermal characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer or authorized distributors for cross-reference information if replacement is necessary.