TMA164B-L

Overview

The TMA164B-L is a Bidirectional Triode Thyristor (Triac) from the TMA16xB series, manufactured by Sanken Electric USA Inc. and distributed by Allegro MicroSystems. It features a peak repetitive off-state voltage (VDRM) of 400 V and a peak non-repetitive off-state voltage (VDSM) of 500 V. The device supports an RMS on-state current (IT(RMS)) of 16 A at a case temperature of 98°C, with a surge on-state current (ITSM) rating of 190 A at 60 Hz. It operates within a junction temperature range of -40 to 125°C and provides an isolation voltage of 2000 V AC RMS between lead and case.

Feature Summary

• Small fully-molded SIP package designed for heatsink mounting to ensure high thermal dissipation and long life.
• Provides increased isolation voltage of 2000 V AC RMS guaranteed for up to 1 minute.
• Features improved commutation dv/dt and (dv/dt)c characteristics compared to other market products.
• Offers uniform switching performance suitable for full-cycle AC power control 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.
• Motor control for small tools and general use switching mode power supplies (SMPS).
• Temperature control systems, light dimmers, and electric blankets.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required voltage rating and packaging format. Ensure storage conditions remain within standard temperature and humidity ranges to prevent lead rusting or solderability issues before installation.

Selection Notes

Select the TMA164B-L for AC power control circuits requiring a 400 V blocking voltage and 16 A continuous current handling capability. Consider the TO-3PF package for efficient heat dissipation when mounting on a heatsink. Verify that the gate trigger characteristics align with the driving controller's output capabilities across the intended operating temperature range.

Part Context

This component belongs to the TMA16xB series of Triacs, which includes variants with 400 V and 600 V ratings. The series is characterized by robust reliability and enhanced isolation specifications. The TMA164B-L specifically denotes the 400 V version without UL recognition, distinguishing it from the 'I' suffix variant.

Replacement Considerations

Direct substitutes include other parts within the TMA16xB series such as the TMA166B-L for higher voltage requirements. Cross-brand replacements must match the 16 A IT(RMS), 400 V VDRM, and TO-3PF package dimensions. Verify gate trigger parameters and thermal resistance values to ensure circuit compatibility.

FAQ

What is the maximum isolation voltage for the TMA164B-L?

The device provides an isolation voltage of 2000 V AC RMS applied for 1 minute between the lead and the case.

How does the TMA164B-L handle surge currents?

It supports a peak non-repetitive surge on-state current (ITSM) of 190 A at 60 Hz and 180 A at 50 Hz, with an initial junction temperature of 125°C.

Is the TMA164B-L UL recognized?

No, only the TMA164B(I) variant carries UL Recognized Component status (File No.: E118037). The TMA164B-L does not have this recognition.