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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

Diodes Incorporated T12M10T800UD

Name: T12M10T800UD
Brand: Diodes Incorporated
SKU: T12M10T800UD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T12M10T800UD

Manufacturer:: Diodes Incorporated

Category:: TRIACs

Package:: TO-220-3

Datasheet:: T12M10T800UD.pdf

Description:: THYRISTOR TO220AB TUBE 50PCS

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Inventory:2,260

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Product details

Overview

T12M10T800UD from Diodes Incorporated is a glass-passivated, TO-220AB packaged triac rated for 800V repetitive peak off-state voltage (VDRM/VRRM), 12A RMS on-state current (IT(RMS)), and 10mA gate trigger current (IGT1) in Quadrant I. It operates up to +125°C junction temperature and is designed for phase-controlled AC power switching in consumer and industrial motor-driven appliances.

For engineers reviewing the T12M10T800UD datasheet, T12M10T800UD pinout, T12M10T800UD application, or T12M10T800UD equivalent, key selection criteria include verified three-quadrant triggering behavior, 40.5 A²s I²t fusing rating, thermal resistance of 2.3°C/W (junction-to-case), and RoHS-compliant, halogen-free "Green" construction per Diodes' DS45510 Rev. 3.

Technical Context

This triac uses silicon bidirectional thyristor technology with glass passivation to ensure voltage ruggedness and stable turn-on characteristics across temperature. Its triggering is validated only in Quadrants I, II, and III-excluding Quadrant IV-enabling reliable control in standard phase-angle dimming and motor speed circuits without false triggering.

It supports high dv/dt immunity (40 V/µs minimum at TJ = +125°C) and robust commutation capability (5 A/ms dI/dt without snubber), making it suitable for inductive loads like universal motors and heating elements where rapid current reversal occurs.

Key Specifications

Parameter	Value and Actual Design Meaning
VDRM / VRRM	800 V - Withstands 800V peak AC line voltage in both directions before conduction, enabling direct use on 230VAC mains with safety margin.
IT(RMS)	12 A - Sustains continuous 12A RMS load current at TJ = +125°C, supporting medium-power motor and heater control.
IGT1 (Max)	10 mA - Requires ≤10mA gate drive in Quadrant I, compatible with standard microcontroller GPIO or optocoupler outputs without external amplification.
I²t (Fusing)	40.5 A²s - Defines single-cycle surge withstand capability (90A @ 20ms); critical for fuse coordination and overcurrent protection design.
RθJC	2.3 °C/W - Junction-to-case thermal resistance enables predictable heatsink sizing when mounted on aluminum fin-type heatsink per JESD-51.
TJ Range	–40°C to +125°C - Full operational range supports deployment in enclosed, thermally constrained environments like power tools and coffee machines.

Pinout & Package

Package: TO-220AB (Type WX), molded plastic, lead-free matte tin-plated leads, UL 94V-0 rated, 2.08g weight. Internally insulated construction provides creepage/clearance compliance for mains-connected applications.

Pin/Terminal	Circuit Role	Design Meaning
MT1 (Main Terminal 1)	Anode 1 / Cathode 1	Primary current path terminal; polarity-agnostic due to bidirectional conduction; connects to load return or neutral side.
MT2 (Main Terminal 2)	Anode 2 / Cathode 2	Primary current path terminal; carries full load current; typically connected to AC line or hot side in phase-control topology.
G (Gate)	Trigger Control Input	Low-energy control input requiring ≤10mA pulse; triggers conduction when voltage between G and MT1 exceeds VGT1 (≤1.5V) in valid quadrants.

Key Features

Feature	Design Value
Glass passivation	Enhances voltage blocking stability and long-term reliability under repeated surge stress and humidity exposure.
Three-quadrant triggering only	Eliminates unintended turn-on in Quadrant IV, improving noise immunity in noisy AC environments like power tools.
Internally insulated package	Provides reinforced isolation between MT2 and mounting surface, enabling direct heatsink attachment without insulating hardware.
Halogen- and antimony-free "Green" construction	Meets <900ppm Br, <900ppm Cl (<1500ppm total Br+Cl), <1000ppm Sb; compliant with global environmental directives.

Applications

Fan Speed Control

Light Dimmer Circuit

Use Scenario: Variable-speed AC induction fan in HVAC systems or kitchen hoods.

IC Role / Device Role / Timing Role: Bidirectional AC switch controlling RMS voltage delivered to fan winding via phase-angle modulation.

Use Value: Enables smooth, low-noise speed regulation with 12A IT(RMS) headroom for startup surges and thermal derating.

Use Scenario: Leading-edge dimmer for incandescent/halogen lamps in residential lighting.

IC Role / Device Role / Timing Role: Main power switching element triggered by zero-crossing synchronized gate pulses.

Use Value: 800V VDRM ensures safe operation on 230VAC mains with transient margin; 10mA IGT simplifies driver design.

Electric Drill Motor Control

Coffee Machine Heater Control

Use Scenario: Variable torque/speed control in corded power tools with universal motors.

IC Role / Device Role / Timing Role: High-current AC switch modulating power to motor armature during bidirectional conduction cycles.

Use Value: 90A non-repetitive surge rating handles motor stall currents; 5 A/ms dI/dt rating supports fast commutation in brushed motor back-EMF reversal.

Use Scenario: On/off and power-level control of resistive heating elements in automatic drip coffee makers.

IC Role / Device Role / Timing Role: Mains-isolated power switch activated by microcontroller-driven optocoupler.

Use Value: Glass passivation ensures long life under thermal cycling; TO-220AB package allows direct PCB-mount heatsinking for compact board layout.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STMicroelectronics BT138-600D	600V VDRM, 8A IT(RMS), 35mA IGT, TO-220 package	Limited to lower-voltage 120VAC systems; higher gate drive requirement reduces MCU compatibility.	Select when cost sensitivity outweighs 230VAC support and when gate drive circuitry already accommodates >30mA.
ON Semiconductor MAC12N8G	800V VDRM, 12A IT(RMS), 25mA IGT, TO-220AB, no glass passivation	Lower dv/dt immunity (10 V/µs min) and reduced humidity reliability vs. glass-passivated T12M10T800UD.	Prefer for non-critical, cost-driven 230VAC applications where environmental stress is minimal and gate drive margin exists.

Compared with BT138-600D and MAC12N8G, T12M10T800UD delivers superior 800V/12A capability with lowest gate drive (10mA), highest dv/dt immunity, and certified glass passivation-making it optimal for thermally demanding, safety-conscious 230VAC consumer appliances.

Availability

T12M10T800UD is available at Aetrix Electronics and suitable for fan controls, light dimmers, electric drill motor drives, and coffee machine heater circuits requiring stable component supply, RoHS compliance, and long-lifecycle availability.

Supply support for T12M10T800UD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and consumer markets.

T12M10T800UD belongs to Diodes' TRIAC family engineered for robust, mains-connected AC power control-designed specifically for phase-angle modulation in thermally constrained, cost-sensitive home and power tool applications.

FAQ

What is the maximum gate trigger voltage for T12M10T800UD?

The maximum gate trigger voltage (VGT1) is 1.5 V under test conditions of VAK = 12 V and RL = 100 Ω at TA = +25°C. This value remains stable across temperature, with typical VGT1 ranging from 0.8 V to 1.5 V up to +125°C per Figure 5 in DS45510 Rev. 3.

Can T12M10T800UD be used in Quadrant IV?

No. The device is specified for triggering only in Quadrants I, II, and III. Quadrant IV triggering is not characterized or guaranteed, and attempting it may result in unreliable turn-on or failure to latch-per the "Triggering in Three Quadrants Only" feature statement in the datasheet.

Is heatsinking required for 12A continuous operation?

Yes. At 12A IT(RMS) and TJ = +125°C, junction-to-ambient thermal resistance (RθJA) is 6.9°C/W. Without a heatsink, ambient temperature must remain below ~35°C to avoid thermal runaway. A fin-type heatsink (100mm × 42mm × 27mm) is recommended to maintain safe operating temperature under full load.

Does T12M10T800UD meet AEC-Q101 for automotive use?

No. While Diodes offers AEC-Q101-qualified triacs, T12M10T800UD is not automotive-qualified. The datasheet explicitly states that automotive-grade versions require PPAP capability and IATF 16949 manufacturing-contact Diodes directly for AEC-Q101 alternatives such as the Z0103MN series.

T12M10T800UD Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-220-3

Packaging:: Bulk

Product Status:: Active

Triac Type:: Standard

Voltage - Off State:: 800 V

Current - On State (It (RMS)) (Max):: 12 A

Voltage - Gate Trigger (Vgt) (Max):: 1.5 V

Current - Non Rep. Surge 50, 60Hz (Itsm):: 90A @ 50Hz, 90A @ 60Hz

Current - Gate Trigger (Igt) (Max):: 10 mA

Current - Hold (Ih) (Max):: 15 mA

Configuration:: Single

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO220AB (Type WX)

T12M10T800UD FAQ

1.How can I place an order for T12M10T800UD through Aetrix?

Please submit a Request for Quotation (RFQ) for T12M10T800UD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for T12M10T800UD reliable?

The price and inventory of T12M10T800UD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T12M10T800UD is usually 5 days.

3.What payment methods are accepted for T12M10T800UD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T12M10T800UD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T12M10T800UD?

T12M10T800UD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T12M10T800UD order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for T12M10T800UD?

For technical support, including T12M10T800UD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T12M10T800UD requirements.

6.How does Aetrix verify that T12M10T800UD is sourced from the original manufacturer or authorized distributors?

All T12M10T800UD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that T12M10T800UD meets industry standards.

7.What is the process for return or replacement of T12M10T800UD?

All T12M10T800UD units undergo pre-shipment inspection (PSI). If there is an issue with T12M10T800UD, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The T12M10T800UD part is unused and in its original packaging.

Return procedure for T12M10T800UD:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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