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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics BTB12-600BRG

Name: BTB12-600BRG
Brand: STMicroelectronics
SKU: BTB12-600BRG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTB12-600BRG

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-220-3

Datasheet:: BTB12-600BRG.pdf

Description:: TRIAC 600V 12A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:18

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Product details

Overview

BTB12-600BRG from STMicroelectronics is a 12 A, 600 V RMS insulated triac in TO-220AB package, designed for AC mains switching in phase-control and ON/OFF applications. It features 50 mA gate trigger current (IGT), 2500 VRMS insulated tab, and high commutation capability for inductive loads without snubber circuits.

For engineers reviewing the BTB12-600BRG datasheet, BTB12-600BRG pinout, BTB12-600BRG application, or BTB12-600BRG equivalent, key selection criteria include insulated mounting, 600 V blocking voltage, 12 A RMS current rating, thermal resistance (Rth(j-c) = 2.3 °C/W), and compatibility with 4-quadrant triggering in static relays and motor controls.

Technical Context

This triac operates in all four quadrants (I–IV) with standard triggering characteristics, supporting full-wave AC control in resistive and inductive loads. Its insulated TO-220AB package enables direct heatsink mounting without isolation hardware while maintaining 2500 VRMS dielectric strength between tab and terminals.

It delivers 120 A non-repetitive surge current (t_p = 20 ms, 50 Hz), critical dV/dt of 200 V/µs at 125 °C, and on-state voltage (V_TM) ≤ 1.55 V at 17 A - enabling robust operation in heating regulation and appliance motor speed control where transient immunity and thermal stability are essential.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	12 A - supports continuous AC load current up to 12 A at Tc = 90 °C with insulated package
VDRM / VRRM	600 V - blocks 600 V peak reverse/repetitive off-state voltage, suitable for 230 VAC mains
IGT (Quadrants I–IV)	50 mA - gate trigger current level compatible with standard microcontroller GPIO or optocoupler drivers
Rth(j-c)	2.3 °C/W - junction-to-case thermal resistance enables efficient heatsink coupling in insulated mounting
dV/dt (min)	200 V/µs - minimum rate of rise of off-state voltage before false turn-on, ensuring noise immunity in industrial environments
V_TM	≤1.55 V @ 17 A - low conduction loss reduces power dissipation and thermal stress in sustained switching
IDRM / IRRM	≤5 µA @ 25 °C - ultra-low leakage current preserves system efficiency and reliability in standby states

Pinout & Package

BTB12-600BRG uses an insulated TO-220AB package with electrically isolated metal tab rated at 2500 VRMS. The tab serves as the A2 terminal and must be mounted to a heatsink without electrical connection to ground or other potentials.

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate triggering; connected to load return path in most phase-control topologies
A2 (MT2)	Main Terminal 2 / Tab	Electrically isolated metal tab serving as main current path; requires insulated mounting hardware
G	Gate	Controls conduction onset; triggers in all four quadrants with ≤50 mA pulse at 12 V

Key Features

Feature	Design Value
UL1557-certified insulation	2500 VRMS isolation between tab and terminals (file E81734), eliminating need for additional isolation barriers
High commutation (4Q)	Rated for reliable turn-off under inductive loads without external snubber networks
Low thermal resistance	Rth(j-c) = 2.3 °C/W enables higher power density and simplified thermal design in space-constrained enclosures
RoHS-compliant packaging	Meets EU Directive 2011/65/EU; lead-free leads and halogen-free molding compound
Standard 4-quadrant operation	Supports universal triggering across all voltage/current polarity combinations, simplifying driver circuit design

Applications

Heating Regulation

Static Relay

Use Scenario: Precise temperature control in electric ovens, water heaters, and HVAC zone actuators using zero-crossing or phase-angle firing.

IC Role / Device Role / Timing Role: Main AC power switch controlling heater element duty cycle via phase-controlled conduction angle.

Use Value: Insulated tab allows direct heatsink mounting in compact enclosures while maintaining safety isolation per UL standards.

Use Scenario: Solid-state replacement for electromechanical relays in PLC output modules and industrial control panels.

IC Role / Device Role / Timing Role: Bidirectional AC switch replacing mechanical contacts; triggered by optocoupled logic signals.

Use Value: 120 A surge rating and 200 V/µs dV/dt immunity ensure long-term reliability in noisy factory environments.

Induction Motor Starting

Light Dimmer (Resistive Load)

Use Scenario: Soft-start and run-capacitor switching in single-phase induction motors for fans, pumps, and compressors.

IC Role / Device Role / Timing Role: High-current AC switch enabling controlled energization of start windings during motor startup.

Use Value: 4-quadrant triggering and high commutation performance prevent false turn-on during rapid voltage reversals in motor back-EMF.

Use Scenario: Leading-edge dimming for incandescent and halogen lamps in residential and commercial lighting systems.

IC Role / Device Role / Timing Role: Phase-controlled AC switch modulating RMS voltage delivered to lamp filament.

Use Value: 12 A RMS rating and low V_TM minimize heat generation and improve dimmer efficiency over extended operating life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTA12-600BRG	Insulated TO-220AB package, identical IT(RMS)/VDRM/IGT specs, same UL certification file (E81734)	Same mounting and isolation requirements; differs only in series prefix (BTA vs BTB)	Select when requiring ST's BTA-series qualification history or legacy BOM alignment
BTB12-600BW	Snubberless™ version with 50 mA IGT but enhanced commutation (dV/dt = 1000 V/µs, (dl/dt)c = 12 A/ms)	Better suited for highly inductive loads like transformers or solenoids where snubberless operation is mandatory	Choose for new designs targeting reduced component count and improved EMI performance in reactive loads

Compared with BTA12-600BRG, BTB12-600BRG offers identical isolation and ratings but distinct series qualification; versus BTB12-600BW, it trades higher commutation margin for standard 4Q triggering simplicity and lower gate drive sensitivity.

Availability

BTB12-600BRG is available at Aetrix Electronics and suitable for heating regulation, static relay modules, and induction motor starting circuits requiring stable component supply, long-lifecycle support, and certified insulation.

Supply support for BTB12-600BRG 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MCU, and discrete devices for industrial, automotive, and consumer markets.

The BTB12 series belongs to ST's high-reliability triac product line engineered for robust AC mains switching in safety-critical and thermally demanding applications, emphasizing insulation integrity and surge resilience.

FAQ

What is the maximum case temperature for continuous operation?

BTB12-600BRG supports continuous operation up to T_c = 90 °C when mounted on an insulated heatsink. At this temperature, its 12 A RMS current rating is maintained per datasheet Figure 2. Exceeding 90 °C requires derating per the IT(RMS) vs. T_c curve to avoid thermal runaway.

Is the metal tab electrically connected to any internal terminal?

Yes - the insulated metal tab is internally connected to A2 (MT2). It is galvanically isolated from A1 and G by a ceramic pad rated at 2500 VRMS, verified under UL1557 (file E81734). No external isolation is needed between tab and heatsink.

Can BTB12-600BRG replace BTB12-600BW in existing designs?

No - BTB12-600BW is a Snubberless™ variant with higher dV/dt (1000 V/µs) and commutation capability. BTB12-600BRG is a standard 4Q triac (dV/dt = 200 V/µs); substituting it in snubberless-critical applications risks false triggering or failure under inductive transients.

What is the recommended torque for the mounting screw?

The recommended torque for the TO-220AB insulated package mounting screw is 0.55 N·m, with a maximum allowable torque of 0.70 N·m. Exceeding this may damage the internal ceramic insulation or deform the tab, compromising dielectric strength and thermal performance.

BTB12-600BRG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

Triac Type:: Standard

Voltage - Off State:: 600 V

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

Voltage - Gate Trigger (Vgt) (Max):: 1.3 V

Current - Non Rep. Surge 50, 60Hz (Itsm):: 120A, 126A

Current - Gate Trigger (Igt) (Max):: 50 mA

Current - Hold (Ih) (Max):: 50 mA

Configuration:: Single

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

BTB12-600BRG FAQ

1.How can I place an order for BTB12-600BRG through Aetrix?

Please submit a Request for Quotation (RFQ) for BTB12-600BRG 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 BTB12-600BRG reliable?

The price and inventory of BTB12-600BRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTB12-600BRG is usually 5 days.

3.What payment methods are accepted for BTB12-600BRG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTB12-600BRG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTB12-600BRG?

BTB12-600BRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTB12-600BRG 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 BTB12-600BRG?

For technical support, including BTB12-600BRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTB12-600BRG requirements.

6.How does Aetrix verify that BTB12-600BRG is sourced from the original manufacturer or authorized distributors?

All BTB12-600BRG 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 BTB12-600BRG meets industry standards.

7.What is the process for return or replacement of BTB12-600BRG?

All BTB12-600BRG units undergo pre-shipment inspection (PSI). If there is an issue with BTB12-600BRG, 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 BTB12-600BRG part is unused and in its original packaging.

Return procedure for BTB12-600BRG:

1.Submit a request within 90 days.

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

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