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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics BTA16-700BWRG

Name: BTA16-700BWRG
Brand: STMicroelectronics
SKU: BTA16-700BWRG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTA16-700BWRG

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-220-3

Datasheet:: BTA16-700BWRG.pdf

Description:: TRIAC ALTERNISTOR 700V 16A TO220

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Product details

Overview

BTA16-700BWRG from STMicroelectronics is a snubberless, standard-sensitivity (50 mA gate trigger), 16 A RMS, 700 V blocking voltage triac in insulated TO-220AB package. It operates in all four quadrants, supports phase control and zero-crossing switching, and is rated for 2500 V_RMS voltage isolation between tab and A2 terminal. It is used in AC motor speed controllers driving universal motors with inductive loads.

For engineers reviewing the BTA16-700BWRG datasheet, BTA16-700BWRG pinout, BTA16-700BWRG application, or BTA16-700BWRG equivalent, key selection criteria include commutation robustness on inductive loads, gate drive compatibility with microcontroller GPIOs (≤50 mA I_GT), thermal resistance (R_th(j-c) = 2.1 °C/W), and UL-rated insulated tab for safety-critical mains-connected designs.

Technical Context

This triac implements a four-quadrant triggering architecture enabling reliable turn-on with either polarity of gate signal relative to MT1, supporting both leading- and trailing-edge phase control. Its snubberless design achieves high commutation capability (dV/dt ≥ 400 V/µs at T_j = 125°C) without external RC networks, critical for inductive load interruption.

It features a voltage-insulated metal tab rated at 2500 V_RMS, compliant with UL E81734, and integrates internal ceramic insulation to isolate the heatsink from mains potential. Thermal performance is defined by R_th(j-c) = 2.1 °C/W (insulated TO-220AB) and maximum junction temperature of +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
I_T(RMS)	16 A - Sustains continuous AC load current up to 16 A RMS at T_c = 85°C with insulated mounting.
V_DRM/V_RRM	700 V - Blocks peak reverse/forward voltages up to 700 V, suitable for 230 VAC mains with margin.
I_GT (Q1–Q4)	50 mA max - Gate trigger current requirement compatible with standard MCU GPIOs or discrete transistor drivers.
dV/dt (min)	400 V/µs - High commutation immunity enables reliable operation on inductive loads without snubber circuits.
R_th(j-c)	2.1 °C/W - Junction-to-case thermal resistance defines heatsink sizing for 16 A conduction at safe junction temperature.
V_TM	1.55 V max - On-state voltage drop at 22.5 A pulse determines conduction loss and thermal dissipation.
I_H	50 mA max - Holding current threshold ensures stable latched conduction down to low load currents.

Pinout & Package

Package: Insulated TO-220AB (UL-rated 2500 V_RMS isolation between tab and A2 terminal).

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate drive; connected to load return or neutral side in AC switching.
A2 (MT2)	Main Terminal 2	High-side AC line connection; carries full load current and defines voltage reference for gate.
G	Gate	Control input; triggers conduction when current ≥ 50 mA flows from G to A1 (Q1/Q3) or A2 (Q2/Q4).
Tab (isolated)	Thermal & Electrical Interface	Electrically isolated metal tab (2500 V_RMS) for heatsinking; must be mounted to grounded or floating heatsink per safety class.

Key Features

Feature	Design Value
Snubberless commutation	Guaranteed dV/dt ≥ 400 V/µs at 125°C enables direct drive of inductive loads (e.g., AC motors) without external RC snubbers.
UL-certified insulation	2500 V_RMS isolation between tab and A2 meets reinforced insulation requirements for Class I appliances and industrial controls.
Four-quadrant triggering	Operates with gate signals referenced to either A1 or A2, supporting flexible control topologies including zero-crossing and phase-angle dimming.
High surge rating	160 A non-repetitive surge (50 Hz, 20 ms) supports motor startup inrush and transient overloads without failure.

Applications

AC Motor Speed Control

Heating Element Regulation

Use Scenario: Variable-speed control of universal motors in power tools and kitchen appliances using phase-angle firing.

IC Role / Device Role / Timing Role: Main AC power switch; triggered at programmable phase angle to adjust RMS voltage delivered to motor windings.

Use Value: Enables precise torque/speed control while maintaining high efficiency and eliminating mechanical wear from brushed motor commutation.

Use Scenario: Duty-cycle modulated power delivery to resistive heating elements in ovens, coffee makers, and soldering stations.

IC Role / Device Role / Timing Role: Bidirectional AC switch activated at zero-crossing points to minimize EMI and inrush stress on heater element.

Use Value: Provides smooth, flicker-free temperature regulation with low acoustic noise and extended heater lifetime due to reduced thermal cycling.

Static Relay Replacement

Light Dimmer Circuit

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

IC Role / Device Role / Timing Role: ON/OFF AC switching device controlled by logic-level signal; handles 16 A resistive or slightly inductive loads.

Use Value: Eliminates contact bounce, arcing, and mechanical fatigue; supports >10⁶ operations with consistent timing and no maintenance.

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

IC Role / Device Role / Timing Role: Phase-controlled AC switch triggered after zero-crossing to reduce lamp RMS voltage and brightness.

Use Value: Delivers smooth, stepless dimming with minimal audible buzz and compatibility with legacy TRIAC-dimmable fixtures.

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
BTB16-700BW	Non-insulated TO-220AB package; R_th(j-c) = 1.2 °C/W; no 2500 V_RMS tab isolation.	Requires isolated heatsink or chassis mounting to meet safety standards; unsuitable for double-insulation designs.	Select when thermal performance is prioritized over safety isolation and system-level creepage/clearance allows non-insulated mounting.
T1635-700G	D²PAK surface-mount package; 35 mA I_GT; R_th(j-c) = 1.2 °C/W; snubberless but not insulated.	Designed for automated assembly and compact PCB layouts; lacks voltage-isolated tab for heatsink attachment.	Select for space-constrained, high-volume SMT designs where board-level isolation and thermal vias replace tab isolation.

Compared with BTB16-700BW and T1635-700G, BTA16-700BWRG uniquely combines UL-rated 2500 V_RMS tab isolation with snubberless inductive load capability-making it the only choice for safety-critical, manually wired, or field-serviceable AC control modules requiring reinforced insulation.

Availability

BTA16-700BWRG is available at Aetrix Electronics and suitable for AC motor control, heating regulation, static relay replacement, and light dimming applications requiring stable component supply, long-term lifecycle support, and certified insulation integrity.

Supply support for BTA16-700BWRG 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The BTA/BTB16 and T16 series triacs were developed specifically for robust, cost-effective AC power control in mains-connected equipment-emphasizing snubberless operation, safety-certified packaging, and compatibility with microcontroller-based gate drivers.

FAQ

What is the maximum junction temperature for continuous operation?

The BTA16-700BWRG has a maximum operating junction temperature of +125°C. This limit applies under steady-state conduction at rated I_T(RMS) = 16 A with case temperature maintained at ≤85°C via heatsinking. Exceeding this temperature risks parametric shift and accelerated degradation of the gate oxide and metallization.

Can this triac be driven directly by a 3.3 V microcontroller GPIO?

No-direct drive is not recommended. With I_GT up to 50 mA and V_GT ≤1.3 V, a 3.3 V GPIO lacks sufficient current sourcing capability and may exceed its absolute maximum ratings. A dedicated gate driver (e.g., MOC3021 optocoupler or discrete transistor stage) is required to safely deliver the needed 50 mA pulse with proper voltage margin and isolation.

Is the insulated tab electrically connected to any internal terminal?

No-the insulated tab is fully isolated from A1, A2, and G terminals. It serves solely as a thermally conductive path to the heatsink and is rated for 2500 V_RMS dielectric strength versus A2 (UL File E81734). Mounting hardware must not compromise this isolation, and no electrical connection should be made to the tab.

Does "snubberless" mean no external components are ever needed?

"Snubberless" means the device meets minimum dV/dt and commutation specifications without an RC snubber under specified inductive load conditions (e.g., 400 V/µs at 125°C). However, EMI filtering, transient suppression (e.g., MOVs), and gate protection (e.g., series resistor + Zener) remain necessary for robust system-level design and EMC compliance.

BTA16-700BWRG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Snubberless™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Triac Type:: Alternistor - Snubberless

Voltage - Off State:: 700 V

Current - On State (It (RMS)) (Max):: 16 A

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

Current - Non Rep. Surge 50, 60Hz (Itsm):: 160A, 168A

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

BTA16-700BWRG FAQ

1.How can I place an order for BTA16-700BWRG through Aetrix?

Please submit a Request for Quotation (RFQ) for BTA16-700BWRG 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 BTA16-700BWRG reliable?

The price and inventory of BTA16-700BWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA16-700BWRG is usually 5 days.

3.What payment methods are accepted for BTA16-700BWRG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA16-700BWRG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTA16-700BWRG?

BTA16-700BWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTA16-700BWRG 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 BTA16-700BWRG?

For technical support, including BTA16-700BWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA16-700BWRG requirements.

6.How does Aetrix verify that BTA16-700BWRG is sourced from the original manufacturer or authorized distributors?

All BTA16-700BWRG 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 BTA16-700BWRG meets industry standards.

7.What is the process for return or replacement of BTA16-700BWRG?

All BTA16-700BWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA16-700BWRG, 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 BTA16-700BWRG part is unused and in its original packaging.

Return procedure for BTA16-700BWRG:

1.Submit a request within 90 days.

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

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