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STMicroelectronics BTA12-600BW
- Part No.:
- BTA12-600BW
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA12-600BW.pdf
- Description:
- TRIAC ALTERNISTOR 600V 12A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:8,138
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Product details
Overview
BTA12-600BW from STMicroelectronics is a 12 A, 600 V Snubberless™ insulated triac in TO-220AB Ins. package, designed for AC mains switching in inductive load applications. It delivers 50 mA gate trigger current (IGT), 2500 VRMS isolated tab rating per UL 81734, and high commutation capability in 3-quadrant operation. Used in motor speed controllers and static relays requiring robust turn-off under reactive loads.
For engineers reviewing the BTA12-600BW datasheet, BTA12-600BW pinout, BTA12-600BW application, or BTA12-600BW equivalent, key selection criteria include insulated tab voltage rating, dV/dt immunity (1000 V/µs), IGT matching to driver capability, and thermal resistance (Rth(j-c) = 2.3 °C/W) for heatsink design.
Technical Context
This triac operates in 3-quadrant mode with gate sensitivity optimized for snubberless inductive switching-enabling reliable commutation without external RC networks. Its internal ceramic insulation provides 2500 VRMS isolation between the tab and MT1/MT2 terminals, meeting UL 1557 (file E81734).
Electrical behavior is defined by critical parameters including dV/dt immunity up to 1000 V/µs at Tj = 125 °C, (dl/dt)c ≥ 12 A/ms at (dV/dt)c = 10 V/µs, and on-state voltage VTM ≤ 1.55 V at 17 A, ensuring low conduction loss and stable triggering across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - Sustained AC load current handling at Tc = 90 °C with insulated package. |
| VDRM / VRRM | 600 V - Peak repetitive off-state voltage blocking capability for 230 VAC mains with safety margin. |
| IGT (Snubberless) | 50 mA - Gate trigger current required for reliable turn-on in 3Q mode; matches standard logic-level drivers. |
| dV/dt (min) | 1000 V/µs - Immunity to false triggering from fast voltage transients on inductive loads. |
| Rth(j-c) | 2.3 °C/W - Junction-to-case thermal resistance enabling efficient heatsinking for continuous 12 A operation. |
| Isolation Rating | 2500 VRMS - Reinforced insulation between metal tab and main terminals per UL 81734. |
| VGD (min) | 0.2 V - Minimum gate-to-drain voltage ensuring gate blocking integrity at high junction temperature. |
Pinout & Package
Package: TO-220AB Insulated - epoxy-molded case with internal ceramic pad isolating the metal tab (A2) from MT1/MT2 terminals; UL 94 V0 rated, torque spec 0.55 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate drive and load return path; connected to neutral or low-side of AC load. |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; electrically isolated from tab via ceramic pad. |
| G | Gate | Control input for triggering conduction; requires ≥50 mA pulse with 12 V/30 Ω test condition. |
| Tab (A2) | Thermal & Electrical Node | Electrically tied to A2 but insulated at 2500 VRMS; serves as primary heatsink interface. |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ 3Q operation | Enables direct inductive load control without external snubber components, reducing BOM count and board space. |
| UL 1557 certified isolation | 2500 VRMS reinforced insulation meets safety standards for industrial and appliance end-equipment. |
| High dV/dt immunity | 1000 V/µs minimum ensures noise-immune triggering in EMI-prone motor and relay environments. |
| Low Rth(j-c) | 2.3 °C/W allows compact heatsink design while maintaining Tj ≤ 125 °C at full 12 A RMS load. |
| RoHS-compliant ECOPACK® | Lead-free terminations and halogen-free molding compound meet EU environmental directives. |
Applications
| Induction Motor Speed Control | Static AC Relay |
|---|---|
Use Scenario: Variable-speed control of single-phase induction motors in HVAC blowers and washing machine drum drives. IC Role / Device Role / Timing Role: Main power switch executing phase-angle control to regulate average motor voltage and torque. Use Value: Eliminates need for snubber circuits due to 1000 V/µs dV/dt immunity, reducing component count and improving reliability under back-EMF stress. | Use Scenario: Solid-state replacement for electromechanical relays in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Bidirectional AC switching element providing zero-crossing–free ON/OFF control with galvanic isolation. Use Value: 2500 VRMS tab isolation enables safe integration into safety-rated control panels without additional barrier components. |
| Industrial Heating Regulation | LED-Compatible Light Dimmer |
Use Scenario: Power cycling of resistive heating elements in industrial ovens and soldering stations using burst-fire control. IC Role / Device Role / Timing Role: High-current AC switch toggling full sine-wave bursts to maintain precise thermal setpoints. Use Value: 12 A RMS rating and 120 A non-repetitive surge capacity support short-cycle thermal load transients without derating. | Use Scenario: Leading-edge dimmer circuit driving modern LED lamps with low-holding-current compatibility. IC Role / Device Role / Timing Role: Snubberless triac enabling clean phase-cut waveforms without ringing-induced LED flicker. Use Value: 50 mA IGT and 1000 V/µs dV/dt ensure stable triggering even with low-capacitance LED driver inputs. |
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 |
|---|---|---|---|
| BTA12-600CW | 35 mA IGT, same 600 V/12 A rating, identical insulated TO-220AB package | Lower gate drive requirement suits microcontroller GPIOs with limited current drive | Select when system gate driver cannot reliably source 50 mA but still requires snubberless operation. |
| T1250-600G | D²PAK surface-mount package, 50 mA IGT, 600 V/12 A, no tab isolation (non-insulated) | Lacks 2500 VRMS isolation; requires PCB creepage/clearance compliance instead of component-level isolation | Choose for automated SMT assembly where isolation is managed at board level and thermal performance permits. |
Compared with BTA12-600CW, the BTA12-600BW offers higher gate drive margin for noisy environments; versus T1250-600G, it provides built-in safety isolation eliminating PCB layout constraints for high-voltage separation.
Availability
BTA12-600BW is available at Aetrix Electronics and suitable for industrial motor controls, static relays, and heating regulation systems requiring stable component supply, long lifecycle support, and UL-certified isolation.
Supply support for BTA12-600BW 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, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
The BTA12 series belongs to ST's high-reliability power discrete portfolio, engineered specifically for robust AC mains switching in safety-critical and thermally demanding applications.
FAQ
What is the maximum junction temperature for continuous operation?
The BTA12-600BW has an operating junction temperature range of –40 °C to +125 °C. For continuous 12 A RMS operation in the insulated TO-220AB package, case temperature must be maintained ≤90 °C per absolute maximum ratings, requiring appropriate heatsinking to limit thermal resistance from junction to ambient.
Does the insulated tab require electrical connection to circuit ground?
No-the insulated tab is internally connected to A2 (MT2) but electrically isolated at 2500 VRMS. It may be mounted directly to a grounded heatsink without compromising isolation integrity, provided mechanical mounting torque does not exceed 0.70 N·m and creepage distances comply with end-equipment safety standards.
Can BTA12-600BW replace a standard 4-quadrant triac in existing designs?
Yes, but only if the application operates in quadrants I, II, and III and does not rely on quadrant IV triggering. The BTA12-600BW is a 3-quadrant Snubberless™ device with optimized dV/dt immunity and higher IGT than standard 4Q parts-verify gate drive strength and commutation requirements before substitution.
What is the recommended gate resistor value for microcontroller-driven operation?
With a 5 V GPIO and 50 mA IGT requirement, a 100 Ω series gate resistor limits peak current to 50 mA while providing noise filtering. For 3.3 V systems, use 68 Ω. Always pair with a reverse-biased 12 V Zener diode across gate–MT1 to clamp negative transients and prevent false triggering.
BTA12-600BW 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:
- 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
BTA12-600BW FAQ
1.How can I place an order for BTA12-600BW through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA12-600BW 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 BTA12-600BW reliable?
The price and inventory of BTA12-600BW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA12-600BW is usually 5 days.
3.What payment methods are accepted for BTA12-600BW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA12-600BW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA12-600BW?
BTA12-600BW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA12-600BW 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 BTA12-600BW?
For technical support, including BTA12-600BW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA12-600BW requirements.
6.How does Aetrix verify that BTA12-600BW is sourced from the original manufacturer or authorized distributors?
All BTA12-600BW 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 BTA12-600BW meets industry standards.
7.What is the process for return or replacement of BTA12-600BW?
All BTA12-600BW units undergo pre-shipment inspection (PSI). If there is an issue with BTA12-600BW, 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 BTA12-600BW part is unused and in its original packaging.
Return procedure for BTA12-600BW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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