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STMicroelectronics BTA08-600BWRG
- Part No.:
- BTA08-600BWRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA08-600BWRG.pdf
- Description:
- TRIAC ALTERNISTOR 600V 8A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:575
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Product details
Overview
BTA08-600BWRG from STMicroelectronics is a snubberless, logic-level triac designed for AC mains switching in inductive load applications. It delivers 8 A RMS on-state current, 600 V repetitive peak off-state voltage (VDRM/VRRM), and 50 mA maximum gate trigger current (IGT), enabling direct interface with microcontrollers without external amplification. It is used in motor speed controllers, heating regulation circuits, and static relays requiring high commutation robustness.
For engineers reviewing the BTA08-600BWRG datasheet, BTA08-600BWRG pinout, BTA08-600BWRG application, or BTA08-600BWRG equivalent, key selection criteria include its snubberless operation under inductive loads, insulated TO-220AB package (2500 VRMS isolation), 50 mA IGT rating, and compliance with UL E81734 for voltage-insulated tab safety.
Technical Context
This triac operates in three quadrants (I, II, III) and features enhanced commutation performance-critical for reliable turn-off in inductive circuits without snubber networks. Its dV/dt immunity reaches 400 V/µs at 125 °C, and critical rate of decrease of main current (dl/dt)c exceeds 4.5 A/ms under specified dV/dt conditions.
The device integrates an internal ceramic pad to achieve reinforced insulation between the MT1/MT2 terminals and the metal tab, rated at 2500 VRMS per UL E81734. Thermal resistance junction-to-case is 2.5 °C/W in the insulated TO-220AB package, supporting stable 8 A RMS operation at Tc = 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A RMS - supports continuous AC load switching up to 1 kW at 120 VAC or 1.8 kW at 230 VAC with proper heatsinking |
| VDRM / VRRM | 600 V - ensures safe blocking of standard 230 VAC mains with ≥2× voltage margin against transients |
| IGT (max) | 50 mA - compatible with GPIO outputs of most microcontrollers (e.g., STM32, PIC, ESP32) without buffer stage |
| dV/dt (min) | 400 V/µs @ 125 °C - prevents false triggering during fast voltage transients in motor or transformer loads |
| Rth(j-c) | 2.5 °C/W - enables thermal design with compact heatsinks; 100 °C case temperature yields 125 °C max junction temp at 8 A |
| VTM (max) | 1.55 V @ 11 A - low conduction loss (~17 W max dissipation at 8 A RMS) improves system efficiency and reduces heatsink size |
| Isolation Rating | 2500 VRMS - meets reinforced insulation requirements for Class I appliances and industrial controls per UL E81734 |
Pinout & Package
Package: TO-220AB Insulated - thermally conductive but electrically isolated metal tab (2500 VRMS), screw-mountable, 0.55 N·m recommended torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate drive and load return; connected to neutral or low-side AC line in typical phase-control layouts |
| A2 (MT2) | Main Terminal 2 | High-current AC output path; connects to load and line side; carries full RMS load current and surge peaks |
| G | Gate | Low-power control input; triggers conduction when pulsed with ≥50 mA (max) into 30 Ω load per datasheet test condition |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless operation | Guaranteed commutation robustness on inductive loads (e.g., motors, solenoids) without external RC snubbers, reducing BOM count and board space |
| Logic-level gate drive | 50 mA IGT max allows direct connection to MCU GPIO pins-no transistor buffer required, simplifying control circuitry |
| Reinforced insulation | 2500 VRMS isolation between tab and MT1/MT2 enables safe mounting to grounded heatsinks in Class I equipment |
| High dV/dt immunity | 400 V/µs minimum at 125 °C prevents spurious turn-on during switching noise or line transients in industrial environments |
| ECOPACK2 compliance | Halogen-free, lead-free TO-220AB package meeting RoHS and environmental standards for global industrial deployment |
Applications
| Motor Speed Control | Heating Regulation |
|---|---|
|
Use Scenario: Variable-speed control of single-phase induction motors in fans, pumps, and compressors using phase-angle firing. IC Role / Device Role / Timing Role: Main AC power switch triggered synchronously with zero-crossing detection to modulate RMS voltage delivered to motor windings. Use Value: Enables smooth speed ramping and energy savings while eliminating mechanical wear from potentiometers or gearboxes. |
Use Scenario: Precise temperature maintenance in resistive heating elements of ovens, water heaters, and soldering stations. IC Role / Device Role / Timing Role: Bidirectional AC switch implementing burst-fire or phase-control dimming to regulate average power to heater. Use Value: Achieves ±1 °C thermal stability with fast response and no contact bounce issues inherent in electromechanical relays. |
| Static Relay Replacement | Light Dimmer Module |
|
Use Scenario: Solid-state replacement for electromechanical relays in PLC output modules and industrial control panels. IC Role / Device Role / Timing Role: High-reliability ON/OFF AC switching element driven by isolated digital signals, with galvanic isolation via insulated tab. Use Value: Eliminates contact arcing, extends service life beyond 1 million cycles, and supports silent, vibration-free operation. |
Use Scenario: Mains-connected residential or commercial light dimmers for incandescent and halogen lamps. IC Role / Device Role / Timing Role: Phase-controlled triac delivering variable RMS voltage to lamp filament based on user-adjusted firing angle. Use Value: Provides flicker-free dimming down to 5% brightness with minimal EMI due to snubberless turn-off behavior. |
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 |
|---|---|---|---|
| BTA08-600SWRG | 10 mA max IGT (vs. 50 mA); lower gate sensitivity; identical snubberless 3Q operation and 600 V rating | Better suited for ultra-low-power MCU interfaces; less tolerant of gate trace inductance or noise | Select when driving from weak GPIOs (e.g., 3.3 V, 4 mA) or where gate drive energy must be minimized |
| BTB08-600BWRG | Non-insulated TO-220AB package (no 2500 VRMS isolation); otherwise identical electrical specs and snubberless logic-level performance | Requires insulated mounting hardware or PCB isolation barriers to meet safety standards | Choose for cost-sensitive, non-safety-critical designs where heatsink grounding is controlled and certified |
Compared with BTA08-600SWRG, this part offers higher gate drive margin for noisy environments; compared with BTB08-600BWRG, it eliminates external insulation requirements-reducing design validation effort for UL/IEC-compliant end equipment.
Availability
BTA08-600BWRG is available at Aetrix Electronics and suitable for motor speed control, heating regulation, static relay replacement, and light dimmer applications requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for BTA08-600BWRG 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, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
The BTA series belongs to ST's high-reliability snubberless triac product line, engineered specifically for robust AC switching in inductive and resistive loads across industrial controls, home appliances, and building automation systems.
FAQ
What is the maximum junction temperature for continuous operation?
The BTA08-600BWRG has an operating junction temperature range of –40 °C to +125 °C. For continuous 8 A RMS operation, the case temperature must be maintained at ≤100 °C, as specified in Table 1. Exceeding this requires derating or enhanced heatsinking per Figure 2.
Does this triac require a heat sink in all applications?
Yes-thermal resistance junction-to-case is 2.5 °C/W, and power dissipation at 8 A RMS exceeds 12 W. Without a heatsink, junction temperature will exceed 125 °C even at ambient 25 °C. A minimum 10 cm² aluminum heatsink is recommended for full-load operation.
Can BTA08-600BWRG replace a standard 4-quadrant triac in existing designs?
No-it is a 3-quadrant snubberless logic-level device. Standard 4Q triacs (e.g., BTA08-600C) have different gate sensitivity and commutation behavior. Direct substitution may cause misfiring or failure to commutate in quadrant IV. Verify gate drive timing and load type before replacement.
Is the insulated tab rated for functional or reinforced insulation?
The 2500 VRMS isolation rating complies with UL file E81734 and qualifies as reinforced insulation-suitable for primary-to-secondary barrier applications in Class I equipment, not merely functional isolation for signal referencing.
BTA08-600BWRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Snubberless™
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Alternistor - Snubberless
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 8 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 80A, 84A
- 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
BTA08-600BWRG FAQ
1.How can I place an order for BTA08-600BWRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA08-600BWRG 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 BTA08-600BWRG reliable?
The price and inventory of BTA08-600BWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA08-600BWRG is usually 5 days.
3.What payment methods are accepted for BTA08-600BWRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA08-600BWRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA08-600BWRG?
BTA08-600BWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA08-600BWRG 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 BTA08-600BWRG?
For technical support, including BTA08-600BWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA08-600BWRG requirements.
6.How does Aetrix verify that BTA08-600BWRG is sourced from the original manufacturer or authorized distributors?
All BTA08-600BWRG 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 BTA08-600BWRG meets industry standards.
7.What is the process for return or replacement of BTA08-600BWRG?
All BTA08-600BWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA08-600BWRG, 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 BTA08-600BWRG part is unused and in its original packaging.
Return procedure for BTA08-600BWRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BTA08-600BWRG Tags
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Z0103NN5AA4
STMicroelectronics
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Littelfuse Inc.
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