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Home > Products > Discrete Semiconductor Products > Thyristors > SCRs

Diodes Incorporated T12M50F600B

Name: T12M50F600B
Brand: Diodes Incorporated
SKU: T12M50F600B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T12M50F600B

Manufacturer:: Diodes Incorporated

Category:: SCRs

Package:: -

Datasheet:: T12M50F600B.pdf

Description:: THYRISTOR TO220AB TUBE 50PCS

Quantity:: RFQ Add To RFQ list

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Inventory:50

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Product details

Overview

T12M50F600B from Diodes Incorporated is a 12A RMS, 600V bidirectional silicon thyristor (triac) designed for AC power control in phase-angle and zero-crossing switching applications. It features four-quadrant gate triggering, glass-passivated junctions for thermal stability, and operates across -40°C to +125°C junction temperature. Used in solid-state relays, motor speed controllers, and lighting dimmers requiring robust line-voltage AC switching.

For engineers reviewing the T12M50F600B datasheet, T12M50F600B pinout, T12M50F600B application, or T12M50F600B equivalent, key selection criteria include peak repetitive blocking voltage (600 V), RMS on-state current rating (12 A), gate trigger current limits (50–75 mA across all quadrants), dv/dt immunity (100 V/µs), and TO-220AB package thermal performance at TC = +85°C.

Technical Context

This triac employs fully diffused and glass-passivated PN junctions to ensure uniform parameter distribution and long-term reliability under thermal cycling. Its symmetrical structure enables bidirectional conduction with guaranteed gate triggering in all four quadrants (I+, I−, III+, III−), supporting flexible control circuit design without polarity constraints.

Dynamic performance is characterized by a minimum critical dv/dt of 100 V/µs at TJ = +85°C, reducing false turn-on risk in noisy AC environments. The device's 40 A²s I²t rating supports short-duration surge handling during inrush or fault conditions in mains-connected loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM/V_RRM	600 V - Peak repetitive off-state voltage in both forward and reverse directions, enabling direct use on 230/240 VAC mains with safety margin.
I_T(RMS)	12 A - Maximum continuous RMS on-state current at case temperature ≤ +85°C, defining thermal derating boundary for heatsink design.
I_TSM	100 A - Non-repetitive surge current for one 60 Hz half-cycle, supporting motor startup or lamp cold-inrush tolerance.
I²t	40 A²s - Fusing integral for overcurrent protection coordination with fast-acting fuses in AC branch circuits.
dV/dt	100 V/µs - Minimum critical rate-of-rise immunity, ensuring stable blocking during voltage transients without spurious triggering.
I_H	50 mA - Holding current threshold below which conduction ceases after gate signal removal, determining minimum load current for reliable latching.
V_TM	1.75 V - Peak on-state voltage at ±12 A, directly impacting conduction loss and thermal dissipation in high-duty-cycle operation.

Pinout & Package

Package: TO-220AB molded plastic housing with matte tin-plated leads (RoHS-compliant, halogen/antimony-free "Green" compound, UL 94V-0 rated). Weight: ~2.0 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Main Terminal 1 (MT1)	Primary AC current path terminal; referenced as cathode in quadrant I/III triggering and anode in quadrant II/IV.
2	Main Terminal 2 (MT2)	Second AC current path terminal; forms bidirectional conduction path with MT1 when triggered via gate.
3	Gate	Control input for initiating conduction in all four quadrants; requires ≤75 mA trigger current in QIV (most sensitive mode).
4	Main Terminal 2 (MT2)	Redundant MT2 connection for enhanced thermal and mechanical robustness in high-current PCB layouts.

Key Features

Feature	Design Value
Four-quadrant gate triggering	Guaranteed turn-on with IGT ≤ 75 mA in QIV and ≤ 50 mA in QI/QII/QIII, enabling universal gate drive compatibility.
Glass-passivated junctions	Improved parameter stability over temperature and time, reducing drift in holding current and breakover voltage across life cycle.
Lead-free & "Green" construction	Meets RoHS 3 (2015/863/EU) and halogen/antimony thresholds (<900 ppm Br/Cl, <1000 ppm Sb), supporting automotive and industrial environmental compliance.
TO-220AB thermal interface	Standardized mounting footprint with isolated tab; enables direct heatsink attachment and 12 A RMS operation at TC = +85°C with appropriate thermal resistance.

Applications

AC Motor Speed Control

Resistive Load Dimming

Use Scenario: Variable-speed fan or pump driven from 230 VAC mains using phase-angle control.

IC Role / Device Role / Timing Role: Triac acts as bidirectional AC switch; gate timing determines conduction angle per half-cycle to regulate average power.

Use Value: Enables smooth, low-noise speed adjustment with 12 A RMS capability matching typical single-phase induction motor full-load currents.

Use Scenario: Incandescent or halogen lamp brightness control in residential/commercial lighting systems.

IC Role / Device Role / Timing Role: Triac switches full AC waveform segments; zero-crossing or phase-control logic adjusts luminance level.

Use Value: Delivers flicker-free dimming with 600 V blocking margin accommodating 240 VAC peaks and transient surges.

Solid-State Relay (SSR)

Heating Element Control

Use Scenario: Isolated AC output stage in industrial SSR modules replacing electromechanical relays.

IC Role / Device Role / Timing Role: Main power switching element; optocoupler-driven gate provides galvanic isolation from control logic.

Use Value: Supports 100 A non-repetitive surge for contactor-like inrush handling while maintaining 12 A steady-state load capacity.

Use Scenario: Temperature-regulated heating in ovens, water heaters, or 3D printer beds powered from 230 VAC.

IC Role / Device Role / Timing Role: Power switch modulated via PID-controlled phase-angle or burst-fire timing to maintain setpoint.

Use Value: Glass-passivated junctions ensure stable trigger thresholds across repeated thermal cycles, minimizing calibration drift.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTB12-600BWRG	Same 12 A/600 V rating; TO-220AB package; but higher max IGT (100 mA in QIV) and lower dv/dt (50 V/µs).	Less suitable for noisy industrial environments where high dv/dt immunity is required.	Select if gate drive margin is constrained and EMI environment is controlled.
T1235T600B	12 A/600 V; TO-220AB; lower IGT (35 mA QIV); same dv/dt (100 V/µs); but no "Green" halogen-free certification.	Not compliant with strict automotive or eco-design directives requiring halogen/antimony limits.	Choose only where RoHS 3 and "Green" status are not mandated.

Compared with BTB12-600BWRG and T1235T600B, the T12M50F600B offers superior dv/dt immunity and certified halogen-free construction-critical for automotive-grade and high-reliability industrial AC control where EMI resilience and regulatory compliance are non-negotiable.

Availability

T12M50F600B is available at Aetrix Electronics and suitable for AC motor speed control, solid-state relay design, resistive load dimming, and heating element regulation requiring stable component supply across production lifecycles.

Supply support for T12M50F600B 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.

The T12M50F600B belongs to Diodes' high-voltage triac product line, engineered for robust AC mains switching in automotive-qualified, industrial, and appliance applications demanding AEC-Q101 readiness and long-term parametric stability.

FAQ

What is the maximum junction temperature for continuous operation?

The T12M50F600B supports continuous operation across a junction temperature range of -40°C to +125°C. Derating of RMS current begins above TC = +85°C, and thermal design must ensure TJ does not exceed +125°C under worst-case ambient and power dissipation conditions.

Is this triac suitable for zero-crossing switching applications?

Yes-the T12M50F600B supports zero-crossing operation due to its guaranteed four-quadrant triggering and low holding current (50 mA). When paired with a zero-crossing detector circuit, it minimizes EMI and inrush stress by commutating only near voltage zero crossings.

Does the "(LS)" suffix indicate lead-free and halogen-free compliance?

Yes-the "(LS)" suffix denotes Diodes' "Lead-Free Standard" designation, confirming compliance with RoHS 3 (2015/863/EU) and halogen/antimony-free "Green" requirements (<900 ppm Br/Cl, <1000 ppm Sb), verified per Diodes' quality definitions and material declarations.

Can this device replace older triacs like the TIC226M in legacy designs?

Yes-T12M50F600B is a direct functional upgrade to TIC226M (6 A/600 V), offering double the RMS current rating (12 A), improved dv/dt immunity (100 V/µs vs. ~50 V/µs), and modern "Green" packaging. Layout and gate drive remain compatible, but thermal design must accommodate higher power dissipation.

T12M50F600B Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: -

Packaging:: Tube

Product Status:: Active

Voltage - Off State:: -

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

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

Voltage - On State (Vtm) (Max):: -

Current - On State (It (AV)) (Max):: -

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

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

Current - Off State (Max):: -

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

SCR Type:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

T12M50F600B FAQ

1.How can I place an order for T12M50F600B through Aetrix?

Please submit a Request for Quotation (RFQ) for T12M50F600B 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 T12M50F600B reliable?

The price and inventory of T12M50F600B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T12M50F600B is usually 5 days.

3.What payment methods are accepted for T12M50F600B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T12M50F600B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T12M50F600B?

T12M50F600B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T12M50F600B 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 T12M50F600B?

For technical support, including T12M50F600B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T12M50F600B requirements.

6.How does Aetrix verify that T12M50F600B is sourced from the original manufacturer or authorized distributors?

All T12M50F600B 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 T12M50F600B meets industry standards.

7.What is the process for return or replacement of T12M50F600B?

All T12M50F600B units undergo pre-shipment inspection (PSI). If there is an issue with T12M50F600B, 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 T12M50F600B part is unused and in its original packaging.

Return procedure for T12M50F600B:

1.Submit a request within 90 days.

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

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