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STMicroelectronics BTA16-800CWRG
- Part No.:
- BTA16-800CWRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA16-800CWRG.pdf
- Description:
- TRIAC ALTERNISTOR 800V 16A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
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Product details
Overview
BTA16-800CWRG from STMicroelectronics is an insulated, snubberless triac rated for 16 A RMS on-state current and 800 V repetitive peak off-state voltage, with 25 mA standard gate trigger current (IGT), designed for AC mains switching in phase-angle control and on/off applications requiring high commutation robustness on inductive loads such as motor controllers and light dimmers.
For engineers reviewing the BTA16-800CWRG datasheet, BTA16-800CWRG pinout, BTA16-800CWRG application, or BTA16-800CWRG equivalent, key selection criteria include insulated tab rating (2500 VRMS), 400 V/µs dV/dt immunity at 125 °C, low thermal resistance (Rth(j-c) = 2.1 °C/W), and UL1557 certification - all critical for reliable operation in industrial AC power interfaces.
Technical Context
This triac operates in four-quadrant triggering mode with standard sensitivity (25 mA IGT), enabling gate control across all voltage/current polarity combinations. Its insulated TO-220AB package provides reinforced isolation between the main terminals and heatsink mounting surface, supporting safe integration into grounded-chassis systems without additional insulation barriers.
The device delivers high commutation capability (dI/dt ≥ 50 A/µs, dV/dt ≥ 400 V/µs at Tj = 125 °C) and features a low on-state voltage drop (VTM ≤ 1.55 V at 22.5 A, 25 °C) with dynamic resistance of 25 mΩ - ensuring minimal conduction loss and thermal stress under full-load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 16 A RMS - supports continuous AC load currents up to 16 A at case temperature ≤ 86 °C |
| VDRM / VRRM | 800 V - blocks 800 V peak reverse/forward voltage, suitable for 230 VAC + margin and 400 VAC systems |
| IGT (Quadrants I–IV) | 25 mA max - standard sensitivity enables direct drive from microcontroller GPIO or optocoupler outputs |
| dV/dt (Tj = 125 °C) | 400 V/µs min - resists false triggering during fast voltage transients on inductive loads |
| Rth(j-c) | 2.1 °C/W - low thermal resistance enables efficient heat transfer to heatsink in insulated TO-220AB package |
| Insulation Rating | 2500 VRMS - certified reinforced isolation meets UL1557 (file E81734) for safety-critical AC mains interfaces |
| ITSM (tp = 20 ms) | 160 A - handles short-duration surge currents typical of motor startup or lamp inrush |
Pinout & Package
Package: TO-220AB Insulated - thermally conductive but electrically isolated tab (2500 VRMS), epoxy body meeting UL94 V0, recommended torque 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 AC switch configuration |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; carries full load current and defines voltage polarity reference for triggering |
| G | Gate | Control input; triggers conduction when ≥25 mA pulse applied with appropriate polarity relative to A1/A2 |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ commutation | Enables reliable switching of inductive loads (e.g., universal motors) without external RC snubber networks |
| UL1557 certification | Validated reinforced insulation (E81734 file) ensures compliance in safety-regulated AC mains equipment |
| Low Rth(j-c) | 2.1 °C/W allows higher sustained power dissipation with smaller heatsinks in space-constrained designs |
| RoHS-compliant packaging | Meets EU Directive 2002/95/EC; lead-free terminations and halogen-free epoxy for environmental compliance |
Applications
| Industrial Motor Control | Light Dimming Systems |
|---|---|
|
Use Scenario: Speed regulation of single-phase universal motors in power tools and kitchen appliances. IC Role / Device Role / Timing Role: Main AC power switch implementing phase-angle control via zero-crossing synchronized gate pulses. Use Value: Snubberless™ operation eliminates need for external snubbers, reducing BOM count and PCB area while maintaining noise immunity during motor commutation. |
Use Scenario: Leading-edge dimming of incandescent and halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered at adjustable phase angle to regulate RMS power delivered to lamp filament. Use Value: 400 V/µs dV/dt immunity prevents false turn-on during rapid voltage rise at dimmer output, ensuring stable brightness control. |
| Heating Element Regulation | Static Relay Replacement |
|
Use Scenario: On/off cycling of resistive heating elements in HVAC systems and water heaters. IC Role / Device Role / Timing Role: Zero-voltage switching (ZVS) enabled AC solid-state relay replacing electromechanical contactors. Use Value: 16 A RMS rating and 160 A surge capability support repeated thermal cycling without contact wear or arcing degradation. |
Use Scenario: Isolated AC load switching in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Insulated main switch providing galvanic isolation between control logic and 230 VAC load circuits. Use Value: 2500 VRMS insulated tab eliminates need for additional isolation barriers, simplifying PCB layout and safety certification. |
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 |
|---|---|---|---|
| BTB16-800CWRG | Non-insulated TO-220AB package; same 16 A/800 V/25 mA specs | Requires external insulation (e.g., mica washer) for chassis-grounded heatsinks | Select when mechanical mounting allows direct heatsink contact and cost-sensitive design prioritizes non-insulated variant |
| BTA16-800BWRG | Snubberless™ version with 50 mA IGT; otherwise identical package and voltage/current ratings | Higher gate drive requirement suits applications using discrete transistor gate drivers instead of microcontrollers | Select when gate drive circuitry can deliver ≥50 mA and enhanced commutation margin is needed for highly reactive loads |
Compared with BTB16-800CWRG, BTA16-800CWRG offers built-in insulation eliminating external isolation components; versus BTA16-800BWRG, it reduces gate drive burden by 50% while retaining snubberless performance - making it optimal for microcontroller-driven, safety-certified AC control.
Availability
BTA16-800CWRG is available at Aetrix Electronics and suitable for industrial motor control, light dimming systems, heating element regulation, and static relay replacement requiring stable component supply and long-term lifecycle support.
Supply support for BTA16-800CWRG 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
This part belongs to ST's BTA series of insulated triacs - engineered specifically for safety-compliant, high-reliability AC mains switching in industrial controls, home appliances, and building automation systems.
FAQ
What is the maximum junction temperature for continuous operation?
The BTA16-800CWRG has an operating junction temperature range of –40 °C to +125 °C. Continuous operation must maintain Tj ≤ 125 °C, which corresponds to a maximum case temperature of 86 °C per absolute maximum ratings - requiring appropriate heatsinking and derating based on ambient conditions and duty cycle.
Can this triac be used without a heatsink?
No - the device requires a heatsink for any sustained current above ~2 A. With Rth(j-c) = 2.1 °C/W and Pd = IT² × RDS(on), even at 5 A RMS, power dissipation exceeds 1 W, raising junction temperature beyond safe limits without thermal management. Minimum recommended copper area on PCB is 2 cm² for ambient-limited operation.
Is the insulated tab rated for functional or safety isolation?
The 2500 VRMS insulation rating is certified for reinforced safety isolation per UL1557 (file E81734), not just functional isolation. It permits direct mounting to grounded metal chassis without additional insulation, satisfying creepage/clearance requirements for Class I equipment in IEC/EN 60335 and IEC/EN 61000-3-2 applications.
Does "Snubberless™" mean no external components are ever needed?
Snubberless™ refers to high commutation capability (dI/dt ≥ 50 A/µs, dV/dt ≥ 400 V/µs) that eliminates the need for RC snubbers in most inductive load applications. However, EMI filtering (e.g., X/Y capacitors) and transient suppression (e.g., MOVs) may still be required for EMC compliance and overvoltage protection per system-level standards.
BTA16-800CWRG 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:
- 800 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):
- 35 mA
- Current - Hold (Ih) (Max):
- 35 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
BTA16-800CWRG FAQ
1.How can I place an order for BTA16-800CWRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA16-800CWRG 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 BTA16-800CWRG reliable?
The price and inventory of BTA16-800CWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA16-800CWRG is usually 5 days.
3.What payment methods are accepted for BTA16-800CWRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA16-800CWRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA16-800CWRG?
BTA16-800CWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA16-800CWRG 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 BTA16-800CWRG?
For technical support, including BTA16-800CWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA16-800CWRG requirements.
6.How does Aetrix verify that BTA16-800CWRG is sourced from the original manufacturer or authorized distributors?
All BTA16-800CWRG 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 BTA16-800CWRG meets industry standards.
7.What is the process for return or replacement of BTA16-800CWRG?
All BTA16-800CWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA16-800CWRG, 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 BTA16-800CWRG part is unused and in its original packaging.
Return procedure for BTA16-800CWRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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