TMA56S-L

Overview

The TMA56S-L is a Triac (Bidirectional Triode Thyristor) from the Sanken TMA5x Series, designed for AC power control applications. It features a peak repetitive off-state voltage (VDRM) of 600 V and a peak non-repetitive off-state voltage (VDSM) of 700 V. The device supports an RMS on-state current (IT(RMS)) of 5 A at a case temperature of 102°C, with surge capabilities of 53 A at 60 Hz and 50 A at 50 Hz. It operates within a junction temperature range of -40 to 125 °C and provides an isolation voltage of 1800 V AC RMS between lead and case. The component is housed in a 3-pin fully molded SIP package (TO-220F) with a heatsink mounting option.

Feature Summary

• High isolation voltage capability of 1800 V AC RMS between lead and case for enhanced safety
• Small fully-molded SIP package design facilitating high thermal dissipation and long life
• Improved commutation dv/dt performance for reliable switching in full-cycle AC applications

Applications

• Residential and commercial appliances including vacuum cleaners, rice cookers, TVs, and home entertainment systems
• White goods such as washing machines requiring two-phase motor control
• Office automation power control devices like photocopiers and laser beam printers
• Temperature control systems and light dimmers
• General use switching mode power supplies (SMPS) for in-rush current control

Procurement Notes

Verify that the specific part number matches the required voltage rating, as the TMA5x series includes variants with different VDRM values. Confirm compliance with RoHS requirements and check for UL Recognized Component status if safety certification is mandatory for the target application. Ensure storage conditions remain within standard temperature and humidity limits to prevent lead rust or solderability issues before assembly.

Selection Notes

Select the TMA56S-L when a 600 V blocking voltage is required, distinguishing it from the 400 V TMA54x variant. Consider the TO-220F package for applications needing direct heatsink mounting to manage thermal resistance. Evaluate the 5 A RMS current rating against the maximum load requirements, accounting for derating at higher case temperatures. Verify gate trigger characteristics align with the driving controller's output capabilities across the operating temperature range.

Part Context

The TMA56S-L belongs to the TMA5x Series of Triacs manufactured by Sanken Electric Co., Ltd. This series is engineered for general-purpose electronic equipment and offers uniform switching performance. The product line includes both 400 V and 600 V versions, packaged in a compact SIP format suitable for various AC power control tasks in consumer and office electronics.

Replacement Considerations

The TMA54S-L serves as a lower voltage alternative within the same series, offering a 400 V VDRM rating instead of 600 V. Designers must verify that the reduced voltage rating meets the circuit requirements before substituting this component.