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STMicroelectronics BTA16-400BRG
- Part No.:
- BTA16-400BRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA16-400BRG.pdf
- Description:
- TRIAC 400V 16A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:6,147
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Product details
Overview
BTA16-400BRG from STMicroelectronics is an insulated, 16 A RMS, 400 V blocking voltage triac in TO-220AB Insulated package, designed for AC mains switching in phase-angle and on/off control circuits. It features 50 mA gate trigger current (IGT), 2500 VRMS isolated tab, and high commutation capability for inductive loads without snubber networks.
For engineers reviewing the BTA16-400BRG datasheet, BTA16-400BRG pinout, BTA16-400BRG application, or BTA16-400BRG equivalent, this device is selected for robust AC power control where thermal resistance (Rth(j-c) = 2.1 °C/W), UL1557 certification (file E81734), and Snubberless™ operation under 125 °C junction temperature are critical design requirements.
Technical Context
This triac operates in all four quadrants (4Q) with standard triggering sensitivity and supports full-cycle AC conduction. Its insulated ceramic pad enables safe mounting to heatsinks without electrical isolation hardware while maintaining 2500 VRMS dielectric strength between tab and MT1/MT2 terminals.
It delivers high commutation performance (dV/dt ≥ 200 V/µs at 125 °C, (dI/dt)c ≥ 5 A/ms) and withstands non-repetitive surge currents up to 160 A (50 Hz, 20 ms). The device is rated for continuous operation from –40 °C to +125 °C junction temperature with thermal resistance junction-to-case of 2.1 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 16 A - Sustains continuous AC load current in heating, motor, and lighting control without derating below Tc = 86 °C. |
| VDRM / VRRM | 400 V - Blocks peak line voltages up to 400 V in 230 VAC systems with safety margin against transients. |
| IGT (Quadrant I–IV) | 50 mA max - Compatible with standard microcontroller GPIO or optocoupler drivers without external amplification. |
| Rth(j-c) | 2.1 °C/W - Enables efficient heat transfer to heatsink; allows 16 A operation at case temperature ≤86 °C. |
| Isolation Voltage | 2500 VRMS - Meets reinforced insulation requirements per UL1557; eliminates need for insulating washers in chassis-mounted designs. |
| dV/dt (125 °C) | ≥200 V/µs - Resists false triggering from fast-rising noise on AC lines, especially in motor drive and relay replacement applications. |
| ITSM (50 Hz) | 160 A - Handles inrush currents of induction motors and transformer primaries during cold start. |
Pinout & Package
TO-220AB Insulated package with electrically isolated metal tab (rated 2500 VRMS), epoxy body meeting UL94 V0, and recommended torque of 0.55 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 (Main Terminal 1) | Anode 1 / Return path for AC current | Connected to neutral or low-side AC rail; referenced as ground in gate drive circuitry. |
| MT2 (Main Terminal 2) | Anode 2 / High-side AC switch node | Carries full load current to AC source; requires PCB trace width and clearance per 16 A RMS. |
| G (Gate) | Trigger control input | Accepts positive or negative pulses relative to MT1; triggers conduction in all four quadrants. |
| Tab (Insulated) | Thermal interface / Electrical isolation barrier | Mounts directly to heatsink; provides 2500 VRMS isolation between heatsink and MT1/MT2-no mica washer needed. |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ commutation | Enables reliable turn-off on inductive loads (e.g., universal motors) without external RC snubbers-reducing BOM count and board space. |
| UL1557 certified insulation | Validated 2500 VRMS isolation meets safety standards for Class I appliances and industrial controls requiring reinforced insulation. |
| Low Rth(j-c) = 2.1 °C/W | Supports compact thermal design: 16 A operation achievable with modest heatsink (e.g., 10 K/W) at ambient ≤50 °C. |
| High dV/dt immunity (200 V/µs) | Prevents spurious turn-on from EMI in noisy environments such as washing machines or HVAC fan controllers. |
| RoHS-compliant ECOPACK® | Meets EU Directive 2002/95/EC; lead-free termination and halogen-free molding compound for sustainable manufacturing. |
Applications
| Appliance Motor Speed Control | Light Dimmer Circuit |
|---|---|
|
Use Scenario: Variable-speed control of universal motors in vacuum cleaners and blenders using phase-angle firing. IC Role / Device Role / Timing Role: Main AC power switch triggered by zero-crossing detector and PWM-controlled gate pulse timing. Use Value: Eliminates mechanical speed switches; enables smooth, quiet, and energy-efficient motor operation with no snubber components required. |
Use Scenario: Leading-edge dimming of incandescent and halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Bidirectional AC switch synchronized to zero-crossing point to adjust conduction angle per half-cycle. Use Value: Delivers flicker-free dimming down to 5% brightness with stable hold and latch behavior across line voltage variations. |
| Static Relay Replacement | Heating Element Regulation |
|
Use Scenario: Solid-state replacement of electromechanical relays in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: On/off AC switching element controlled by 3.3 V/5 V logic-level signals via optocoupler-isolated gate driver. Use Value: Achieves >10⁶ switching cycles with no contact wear, arc suppression, or audible click-critical for industrial automation uptime. |
Use Scenario: Proportional time-based control of resistive heating elements in ovens, coffee makers, and soldering stations. IC Role / Device Role / Timing Role: Duty-cycled AC switch operating in burst-fire mode to regulate average power delivered to heater. Use Value: Provides precise temperature stability (<±2 °C) with zero EMI from zero-crossing switching and no inrush current spikes. |
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 |
|---|---|---|---|
| BTA16-600BRG | Higher VDRM (600 V vs. 400 V); identical IGT, package, and isolation rating. | Better suited for 277 VAC or transient-prone 230 VAC grids where 400 V margin is insufficient. | Select when system overvoltage protection requires ≥600 V blocking capability without changing layout or thermal design. |
| BTB16-400BRG | Non-insulated TO-220AB package; same IT(RMS), VDRM, IGT, and thermal resistance (Rth(j-c) = 1.2 °C/W). | Requires insulating hardware (washer, sleeve) for chassis mounting; lower thermal resistance allows higher power density. | Choose when heatsink isolation is handled externally and thermal performance is prioritized over assembly simplicity. |
Compared with BTA16-400BRG, the BTA16-600BRG offers enhanced transient robustness for demanding grid environments, while BTB16-400BRG trades isolation convenience for improved thermal efficiency-enabling smaller heatsinks where isolation can be managed at the system level.
Availability
BTA16-400BRG is available at Aetrix Electronics and suitable for static relays, light dimmers, and appliance motor speed controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for BTA16-400BRG 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, delivering innovative analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The BTA series belongs to ST's high-reliability power discrete portfolio, engineered specifically for robust AC mains switching in safety-critical and thermally constrained applications such as white goods and building automation.
FAQ
What is the maximum junction temperature for continuous operation?
The BTA16-400BRG is rated for continuous operation up to +125 °C junction temperature. Derating begins above Tj = 125 °C, and the absolute maximum storage temperature is +150 °C. Thermal design must ensure junction temperature remains within this limit under worst-case ambient and load conditions.
Does the insulated tab eliminate the need for a thermal pad or insulator?
Yes-the TO-220AB Insulated package integrates a ceramic isolation layer beneath the metal tab, providing 2500 VRMS dielectric strength. No additional mica or silicone insulator is required when mounting to a grounded heatsink, simplifying mechanical assembly and improving thermal contact reliability.
Can BTA16-400BRG replace a BTA16-600BRG in existing designs?
No-BTA16-400BRG has a lower VDRM/VRRM rating (400 V vs. 600 V) and may fail under voltage transients tolerated by the 600 V version. Substitution requires verification of peak line voltage, surge margins, and compliance with IEC 61000-4-5. Use only after full system-level stress testing.
Is gate trigger polarity sensitive in practical use?
No-the BTA16-400BRG is a 4-quadrant triac and triggers reliably with either positive or negative gate pulses relative to MT1. This enables compatibility with both DC-coupled and AC-coupled gate drivers, including zero-crossing optocouplers like MOC3021 or IL420.
BTA16-400BRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Triac Type:
- Standard
- Voltage - Off State:
- 400 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
BTA16-400BRG FAQ
1.How can I place an order for BTA16-400BRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA16-400BRG 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 BTA16-400BRG reliable?
The price and inventory of BTA16-400BRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA16-400BRG is usually 5 days.
3.What payment methods are accepted for BTA16-400BRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA16-400BRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA16-400BRG?
BTA16-400BRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA16-400BRG 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 BTA16-400BRG?
For technical support, including BTA16-400BRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA16-400BRG requirements.
6.How does Aetrix verify that BTA16-400BRG is sourced from the original manufacturer or authorized distributors?
All BTA16-400BRG 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 BTA16-400BRG meets industry standards.
7.What is the process for return or replacement of BTA16-400BRG?
All BTA16-400BRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA16-400BRG, 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 BTA16-400BRG part is unused and in its original packaging.
Return procedure for BTA16-400BRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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