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STMicroelectronics BTA26-600BRG
- Part No.:
- BTA26-600BRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TOP-3 Insulated
- Datasheet:
-
BTA26-600BRG.pdf
- Description:
- TRIAC 600V 25A TOP3
- Quantity:
- Payment:
- Shipping:
Inventory:210
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Product details
Overview
BTA26-600BRG from STMicroelectronics is a 25 A, 600 V RMS insulated TRIAC in TOP3 package, designed for AC mains switching in static relays and phase-control dimmers. It supports standard 4-quadrant triggering (IGT ≤ 50 mA) and features 2500 VRMS insulation rating, low thermal resistance (Rth(j-c) = 0.9 °C/W), and snubberless 3-quadrant operation capability.
For engineers reviewing the BTA26-600BRG datasheet, BTA26-600BRG pinout, BTA26-600BRG application, or BTA26-600BRG equivalent, key selection criteria include commutation robustness (dI/dt ≥ 13 A/ms), high dV/dt immunity (≥ 500 V/µs at 125 °C), gate trigger current tolerance across temperature, and UL1557 recognition for safety-critical AC control designs.
Technical Context
This insulated TRIAC operates in both standard (4Q) and snubberless (3Q) modes, with verified turn-off commutation performance under inductive loads. Its gate trigger threshold (VGT ≤ 1.3 V) and holding current (IH ≤ 80 mA) are specified across –40 to +125 °C junction temperature range, enabling reliable zero-crossing and phase-angle control in noisy industrial environments.
The device delivers 25 A RMS on-state current at Tc = 100 °C with on-state voltage VTM ≤ 1.55 V (25 °C) and dynamic resistance RD ≤ 16 mΩ (125 °C), supporting efficient thermal management in compact heatsinked designs. Insulation integrity is validated per UL1557 (file 81734) at 2500 VRMS for 1 minute.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 25 A - Sustains full-cycle AC load current up to 25 A at case temperature 100 °C without derating |
| VDRM / VRRM | 600 V - Blocks 600 V peak repetitive off-state voltage in both directions, suitable for 230 VAC mains |
| IGT (Standard) | 50 mA max - Gate trigger current requirement for reliable 4-quadrant turn-on, compatible with microcontroller GPIO drive |
| Rth(j-c) | 0.9 °C/W - Low junction-to-case thermal resistance enables effective heat transfer to heatsink in insulated mounting |
| dV/dt (min) | 500 V/µs - Immunity to false triggering from fast-rising transients on main terminals at 125 °C junction |
| VINS | 2500 VRMS - Reinforced insulation withstand voltage for 1 minute, certified per UL1557 file 81734 |
| I²t (fusing) | 340 A²s - Surge energy handling capacity for 10 ms fault pulses, supporting overcurrent protection coordination |
Pinout & Package
Package: TOP3 insulated (plastic housing with electrically isolated metal tab rated 2500 VRMS). Dimensions: 20.4–21.1 mm (L) × 15.1–15.5 mm (W) × 4.4–4.6 mm (H); weight: 4.5 g; recommended torque: 1.05 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connects to load return or neutral side in AC circuits |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; polarity relative to A1 defines quadrant conduction behavior |
| G | Gate | Control input for bidirectional turn-on; requires ≥ 50 mA pulse (standard mode) with ≤ 1.3 V threshold |
Key Features
| Feature | Design Value |
|---|---|
| UL1557 Recognition | File #81734 confirmed - Enables use in safety-certified end equipment without additional isolation components |
| Snubberless Operation | Validated 3-quadrant commutation (dI/dt ≥ 13 A/ms at 125 °C) - Eliminates need for external RC snubbers in resistive/inductive motor loads |
| Low Thermal Resistance | Rth(j-c) = 0.9 °C/W - Reduces required heatsink size by ~30% vs. comparable non-insulated TRIACs at same power dissipation |
| High dV/dt Immunity | 500 V/µs minimum at 125 °C - Prevents spurious turn-on during EMI events in industrial lighting and HVAC controls |
| RoHS Compliance | Meets 2002/95/EC directive - Lead-free terminations and halogen-free epoxy enable compliance with global environmental regulations |
Applications
| Static Relay Switching | Light Dimming Control |
|---|---|
|
Use Scenario: Solid-state replacement of electromechanical relays in PLC output modules and building automation panels. IC Role / Device Role / Timing Role: Bidirectional AC switch controlling 230 VAC resistive loads (heaters, lamps) with zero-voltage turn-on sequencing. Use Value: 2500 VRMS insulation eliminates need for external isolation barriers; 25 A rating supports up to 5.75 kW loads at 230 VAC. |
Use Scenario: Leading-edge phase-cut dimmer circuits for incandescent and halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Main AC switching element triggered by microcontroller-generated phase-delayed gate pulses. Use Value: 500 V/µs dV/dt immunity prevents misfiring during rapid voltage transitions; 50 mA IGT ensures compatibility with standard optocoupler drivers. |
| Induction Motor Starting | Heating Regulation |
|
Use Scenario: Soft-start and run-capacitor bypass in single-phase induction motors for fans, pumps, and compressors. IC Role / Device Role / Timing Role: Snubberless 3-quadrant TRIAC enabling controlled turn-off during inductive current zero-crossings. Use Value: Validated dI/dt ≥ 13 A/ms at 125 °C ensures reliable commutation without snubber networks, reducing BOM count and board space. |
Use Scenario: On/off and phase-angle control of resistive heating elements in industrial ovens, soldering stations, and laboratory equipment. IC Role / Device Role / Timing Role: High-current AC switch modulating power delivery based on PID-controlled gate timing signals. Use Value: 25 A RMS rating and 0.9 °C/W Rth(j-c) support continuous operation at full load with minimal thermal derating on standard heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTB26-600BRG | Non-insulated TOP3 package; Rth(j-c) = 0.6 °C/W; no 2500 VRMS isolation | Requires external isolation for user-accessible circuits; better thermal performance in chassis-grounded systems | Select when mechanical mounting allows direct heatsink contact and safety standards permit non-isolated construction |
| BTA26-600BWRG | Snubberless variant with lower IGT (35 mA max); identical insulation and voltage ratings | Enables gate drive with weaker controllers (e.g., low-power optocouplers); same footprint and thermal behavior | Select when gate drive capability is limited or higher noise immunity in 3Q mode is prioritized over 4Q flexibility |
Compared with BTB26-600BRG, BTA26-600BRG trades slightly higher thermal resistance for mandatory reinforced insulation-critical for user-accessible equipment. Versus BTA26-600BWRG, it offers broader 4-quadrant triggering compatibility at the cost of marginally higher gate drive demand.
Availability
BTA26-600BRG is available at Aetrix Electronics and suitable for static relay design, light dimmer manufacturing, and induction motor control requiring stable component supply and UL-compliant insulation.
Supply support for BTA26-600BRG 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, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
BTA26 belongs to ST's high-reliability AC power switching portfolio, engineered specifically for robust, safety-certified AC mains control in industrial automation, home appliances, and building management systems.
FAQ
What is the maximum allowable case temperature for continuous 25 A RMS operation?
The datasheet specifies IT(RMS) = 25 A at Tc = 100 °C for the BTA26-600BRG in TOP3 insulated package. Exceeding this temperature requires linear derating per Figure 2; at 110 °C case, maximum RMS current drops to approximately 21 A. Thermal interface material quality and heatsink surface flatness directly impact achievable Tc.
Can BTA26-600BRG be used in snubberless mode with inductive loads?
Yes-BTA26-600BRG is qualified for snubberless 3-quadrant operation with (dI/dt)c ≥ 13 A/ms at 125 °C, verified per Table 2. This supports reliable commutation in fan and pump motor starting circuits without external RC networks, provided gate triggering aligns with current zero-crossing detection.
Is the 2500 VRMS insulation rating tested per UL1557 or IEC60747-5-2?
The 2500 VRMS insulation withstand voltage is validated per UL1557 (file 81734), which covers solid-state relays and similar AC switching devices. It is not certified to IEC60747-5-2, as that standard applies to optocouplers and discrete isolators-not insulated TRIAC packages.
How does the gate trigger current (IGT) vary with junction temperature?
Per Figure 7, IGT increases by ~2.2× from 25 °C to 125 °C junction temperature. At 125 °C, maximum IGT remains ≤ 50 mA for standard mode, but design margin shrinks-gate drive circuits must sustain ≥ 75 mA peak to ensure robust turn-on across full operating temperature range.
BTA26-600BRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TOP-3 Insulated
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Standard
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 25 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 250A, 260A
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Current - Hold (Ih) (Max):
- 80 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TOP3
BTA26-600BRG FAQ
1.How can I place an order for BTA26-600BRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA26-600BRG 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 BTA26-600BRG reliable?
The price and inventory of BTA26-600BRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA26-600BRG is usually 5 days.
3.What payment methods are accepted for BTA26-600BRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA26-600BRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA26-600BRG?
BTA26-600BRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA26-600BRG 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 BTA26-600BRG?
For technical support, including BTA26-600BRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA26-600BRG requirements.
6.How does Aetrix verify that BTA26-600BRG is sourced from the original manufacturer or authorized distributors?
All BTA26-600BRG 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 BTA26-600BRG meets industry standards.
7.What is the process for return or replacement of BTA26-600BRG?
All BTA26-600BRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA26-600BRG, 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 BTA26-600BRG part is unused and in its original packaging.
Return procedure for BTA26-600BRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BTA26-600BRG Tags
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