TMA126G-L

Overview

The TMA126G-L is a Triac (Bidirectional Triode Thyristor) manufactured by Sanken Electric Co., Ltd. It features a peak repetitive off-state voltage (VDRM) of 600 V and an RMS on-state current rating of 12 A at a case temperature of 103°C. The device supports a peak non-repetitive off-state voltage (VDSM) of 700 V and can handle surge currents up to 126 A at 60 Hz. It operates within a junction temperature range of -40°C to 125°C and utilizes a 3-pin TO-220 package with a flange mount for thermal dissipation.

Feature Summary

• Provides uniform switching performance suitable for full-cycle AC power control applications.
• Features improved commutation dv/dt characteristics compared to standard market products.
• Incorporates a small SIP package design with heatsink mounting capability for high thermal dissipation.

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).

Procurement Notes

Verify the specific revision status of the datasheet before implementation, as the document indicates this component is not recommended for new designs. Confirm that the ordering suffix does not alter functional specifications unless explicitly documented by the manufacturer. Ensure compliance with RoHS requirements and leadframe plating standards during sourcing.

Selection Notes

Select this component for AC power control circuits requiring 600 V blocking capability and 12 A continuous current handling. Consider the thermal resistance from junction to case when designing heat sinks. Evaluate derating factors for ambient temperature and self-heating to ensure reliability within the specified -40°C to 125°C operating range.

Part Context

This Triac belongs to the Sanken Electric bidirectional triode thyristor family designed for general-purpose electronic equipment. It serves as a robust switching element for AC loads in consumer electronics and office automation. The device is intended for applications where reliable, uniform switching and high thermal stability are required.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Sanken Electric sales representatives for alternative components if this part is discontinued or unavailable.

FAQ

What is the critical rising rate of off-state voltage during commutation?

The critical rising rate of off-state voltage during commutation ((dv/dt)c) is specified as a minimum of 10 V/μs under test conditions of VD = 400 V, (di/dt)c = –6 A/ms, ITP = 2 A, and TJ = 125°C.

How is the gate trigger current defined across different quadrants?

The maximum gate trigger current (IGT) is 30 mA for Quadrant I (T2+, G+), Quadrant II (T2+, G–), and Quadrant III (T2–, G–) at TJ = 25°C with VD = 12 V and RL = 20 Ω.

What are the absolute maximum ratings for peak gate power dissipation?

The peak gate power dissipation (PGM) is rated at 5 W for frequencies ≥ 50 Hz with a duty cycle ≤ 10%. The average gate power dissipation (PG(AV)) is limited to 0.5 W.