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STMicroelectronics BTA12-600TWRG
- Part No.:
- BTA12-600TWRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA12-600TWRG.pdf
- Description:
- TRIAC SENS GATE 600V 12A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:512
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Product details
Overview
BTA12-600TWRG from STMicroelectronics is a logic-level, insulated triac designed for AC mains switching in low-holding-current applications. It delivers 12 A RMS on-state current, 600 V off-state blocking voltage, and ultra-low 5 mA gate trigger current (IGT), enabling direct drive from microcontrollers or optocouplers without buffer stages. It is used in LED lamp dimmers, solid-state relays, and appliance motor speed controllers where high commutation robustness on inductive loads is required.
For engineers reviewing the BTA12-600TWRG datasheet, BTA12-600TWRG pinout, BTA12-600TWRG application, or BTA12-600TWRG equivalent, key selection criteria include insulated tab rating (2500 VRMS), Snubberless™ 4Q/3Q commutation capability, thermal resistance (Rth(j-c) = 2.3 °C/W), and compatibility with phase-control topologies driving resistive or inductive AC loads.
Technical Context
This triac operates in three quadrants (I, II, III) with logic-level sensitivity, allowing reliable triggering at ≤1.3 V gate threshold (VGT) and maintaining stable conduction down to 10 mA holding current (IH). Its internal ceramic insulation enables safe mounting to heatsinks without isolation hardware while meeting UL1557 certification (file E81734).
The device features high dV/dt immunity (1000 V/µs at Tj = 125 °C) and critical rate of decrease of main current (dl/dt)c ≥6.5 A/ms under snubberless conditions - essential for reliable turn-off in inductive lighting and motor control circuits without external snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - supports continuous AC load currents up to 12 A at Tc = 90 °C with insulated TO-220AB package. |
| VDRM / VRRM | 600 V - blocks 600 V peak reverse/repetitive off-state voltage, suitable for 230 VAC mains with safety margin. |
| IGT (max) | 5 mA - enables direct interface with low-power MCU GPIOs or standard optotriacs (e.g., MOC3021) without gate amplification. |
| VGT (max) | 1.3 V - ensures triggering at low gate voltage, reducing power loss and simplifying driver design. |
| IH (max) | 10 mA - low holding current allows stable conduction even with small load currents, critical for LED dimmer zero-crossing stability. |
| Rth(j-c) | 2.3 °C/W - junction-to-case thermal resistance enables efficient heat transfer to heatsink, supporting full 12 A operation with modest cooling. |
| dV/dt (min) | 1000 V/µs - high noise immunity prevents false triggering from line transients or inductive kickback in un-snubbed circuits. |
Pinout & Package
Package: TO-220AB Insulated - features electrically isolated metal tab rated at 2500 VRMS, UL1557 certified, with recommended torque of 0.55 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connected to load return or neutral side in typical phase-control configurations. |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; carries full load current and defines polarity reference for gate signal. |
| G | Gate | Control input requiring ≥5 mA pulse to initiate conduction; compatible with TTL/CMOS logic levels via current-limiting resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ 3Q operation | Enables reliable turn-off on inductive loads without external RC snubber networks, reducing BOM count and board space. |
| Insulated tab (2500 VRMS) | Eliminates need for insulating washers or pads when mounting to grounded heatsinks, simplifying mechanical assembly and improving thermal reliability. |
| UL1557 certification | Validated isolation performance meets reinforced insulation requirements for industrial and consumer safety standards. |
| Logic-level IGT (5 mA) | Reduces gate drive power consumption by >80% vs. standard triacs (25–50 mA), extending battery life in portable controls and lowering driver IC stress. |
Applications
| LED Lamp Dimming | Industrial Solid-State Relay |
|---|---|
Use Scenario: Phase-angle dimming of mains-powered LED drivers with microcontroller-based timing control. IC Role / Device Role / Timing Role: Main AC switching element triggered synchronously with zero-crossing detection to adjust conduction angle per half-cycle. Use Value: Low 5 mA IGT allows direct drive from MCU pins; insulated tab enables compact heatsink integration; high dV/dt immunity prevents misfiring during rapid LED current transitions. | Use Scenario: Replacement for electromechanical relays in PLC output modules controlling HVAC actuators or solenoid valves. IC Role / Device Role / Timing Role: Bidirectional AC power switch activated by isolated digital signals (e.g., optocoupler output) to energize AC loads. Use Value: 2500 VRMS insulation eliminates creepage/clearance concerns on PCB; 12 A RMS rating supports 2.5 kW resistive loads; RoHS-compliant D²PAK/TO-220AB options simplify compliance documentation. |
| Appliance Motor Speed Control | Heating Regulation System |
Use Scenario: Variable-speed control of universal motors in vacuum cleaners or power tools using phase-cut waveforms. IC Role / Device Role / Timing Role: High-current AC switch modulating power delivery to motor windings based on user-set duty cycle. Use Value: Snubberless™ 3Q capability ensures clean commutation during motor back-EMF reversal; low Rth(j-c) sustains 12 A under continuous duty with minimal derating. | Use Scenario: Temperature-regulated resistive heating in ovens, water heaters, or 3D printer beds using on/off or phase-control algorithms. IC Role / Device Role / Timing Role: Mains-frequency AC power switch executing bang-bang or proportional-integral control logic. Use Value: 600 V VDRM provides 2.6× safety margin over 230 VAC peak; UL-certified insulation ensures compliance in Class I appliances; 120 A non-repetitive surge rating handles heater cold-resistance inrush. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTA12-600SWRG | 10 mA IGT (vs. 5 mA), same package and voltage rating | Slightly higher gate drive requirement; less sensitive to weak trigger sources | Select when gate drive margin is available and cost optimization is prioritized over minimal IGT. |
| T1205-600G | D²PAK surface-mount package, 5 mA IGT, same electrical specs but Rth(j-c) = 1.4 °C/W | Higher thermal efficiency but requires reflow-compatible layout and lacks insulated tab | Choose for automated SMT production and improved thermal performance where isolation is handled at system level. |
Compared with BTA12-600SWRG, the BTA12-600TWRG offers superior gate sensitivity for marginal drive conditions; versus T1205-600G, it trades thermal advantage for system-level isolation simplicity and through-hole assembly flexibility.
Availability
BTA12-600TWRG is available at Aetrix Electronics and suitable for LED dimming systems, industrial SSRs, appliance motor controls, and heating regulation requiring stable component supply across long-lifecycle embedded designs.
Supply support for BTA12-600TWRG 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 discrete devices, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.
The BTA series belongs to ST's high-reliability AC power switching portfolio, engineered specifically for robust, snubberless operation in mains-connected equipment where safety, thermal efficiency, and long-term stability are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The BTA12-600TWRG has an operating junction temperature range of –40 °C to +125 °C. For sustained 12 A RMS conduction, case temperature must be maintained ≤90 °C per absolute maximum ratings, requiring appropriate heatsinking to manage 2.3 °C/W thermal resistance and on-state losses (VTM ≤1.55 V).
Does this triac require a snubber circuit for inductive loads?
No - the BTA12-600TWRG is a Snubberless™ triac with verified 3-quadrant commutation performance, including (dl/dt)c ≥6.5 A/ms at 125 °C. It is qualified for direct use with inductive loads like motors and transformers without external RC snubbers, provided gate triggering remains within specified IGT and dV/dt limits.
How is the insulated tab rated, and what safety standards does it meet?
The insulated tab is rated for 2500 VRMS isolation and certified to UL1557 (file E81734) as reinforced insulation. This allows direct mounting to grounded heatsinks without additional insulators, satisfying creepage and clearance requirements for Class I appliances and industrial control equipment operating at 230/400 VAC mains.
Can this part replace older BTA12-600B variants in existing designs?
Yes - BTA12-600TWRG shares identical TO-220AB insulated package dimensions, pinout, and voltage/current ratings with BTA12-600B, but adds logic-level sensitivity (5 mA vs. 50 mA IGT) and enhanced commutation. Existing layouts are compatible; gate drive circuitry may require resistor value reduction to deliver adequate trigger current.
BTA12-600TWRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- 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):
- 5 mA
- Current - Hold (Ih) (Max):
- 10 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
BTA12-600TWRG FAQ
1.How can I place an order for BTA12-600TWRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA12-600TWRG 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 BTA12-600TWRG reliable?
The price and inventory of BTA12-600TWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA12-600TWRG is usually 5 days.
3.What payment methods are accepted for BTA12-600TWRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA12-600TWRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA12-600TWRG?
BTA12-600TWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA12-600TWRG 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 BTA12-600TWRG?
For technical support, including BTA12-600TWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA12-600TWRG requirements.
6.How does Aetrix verify that BTA12-600TWRG is sourced from the original manufacturer or authorized distributors?
All BTA12-600TWRG 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 BTA12-600TWRG meets industry standards.
7.What is the process for return or replacement of BTA12-600TWRG?
All BTA12-600TWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA12-600TWRG, 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 BTA12-600TWRG part is unused and in its original packaging.
Return procedure for BTA12-600TWRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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