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STMicroelectronics BTA24-600CWRG
- Part No.:
- BTA24-600CWRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTA24-600CWRG.pdf
- Description:
- TRIAC ALTERNISTOR 600V 25A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
BTA24-600CWRG from STMicroelectronics is a snubberless 3-quadrant triac in TO-220AB insulated package, rated for 25 A RMS on-state current and 600 V repetitive peak off-state voltage, with 35 mA maximum gate trigger current (IGT) and 500 V/µs minimum critical dV/dt at 125 °C - used for phase-controlled AC motor speed regulation and heating control in industrial static relays.
For engineers reviewing the BTA24-600CWRG datasheet, BTA24-600CWRG pinout, BTA24-600CWRG application, or BTA24-600CWRG equivalent, this device supports high-commutation AC switching without external snubbers in demanding thermal environments where insulation and creepage distance are critical.
Technical Context
This triac operates in three quadrants (I, II, III) with snubberless capability enabled by high dV/dt immunity (≥500 V/µs) and robust commutation performance (dI/dt ≥13 A/ms). Its insulated TO-220AB package provides 2.5 kV RMS insulation rating and 1.7 °C/W junction-to-case thermal resistance.
Designed for line-frequency AC control, it features low on-state voltage (max 1.55 V at 35 A, 25 °C), tight gate threshold (VGT ≤1.3 V), and stable latching/holding currents (IL ≤70 mA, IH ≤50 mA) across –40 to +125 °C operating junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 25 A - supports continuous AC load switching up to 6 kW at 240 VAC with adequate heatsinking |
| VDRM / VRRM | 600 V - withstands standard 230 VAC mains with ≥2.6× safety margin against transient overvoltage |
| IGT (max) | 35 mA - enables direct drive from microcontroller GPIO or low-power optocouplers without buffer stages |
| dV/dt (min) | 500 V/µs at Tj = 125 °C - eliminates need for RC snubber networks in most phase-control applications |
| Rth(j-c) | 1.7 °C/W - allows 25 A operation with case temperature ≤75 °C using modest heatsink (e.g., 10 cm² aluminum) |
| VTM (max) | 1.55 V at 35 A - limits conduction loss to ≤54 W at full RMS current, reducing thermal design burden |
| VINS | 2.5 kV RMS, 1 min - meets reinforced insulation requirements for Class I appliances and industrial controls |
Pinout & Package
TO-220AB insulated package with creepage/clearance optimized for safety-critical AC mains interfaces. Mounting tab is electrically isolated from A2 terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connected to load return path in standard phase-control topology |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; electrically isolated from mounting tab per UL1557 certification |
| G | Gate | Controls conduction onset; triggers in quadrants I, II, and III only - no 4Q operation required for snubberless mode |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless 3-quadrant operation | Enables compact, reliable AC dimming and motor control without external RC networks or varistors |
| UL1557 recognition (file #81734) | Validates reinforced insulation integrity for end-equipment safety certification in North America |
| RoHS-compliant & halogen-free resin | Meets EU environmental directives and UL94 V0 flammability for enclosed industrial enclosures |
| Low thermal resistance (Rth(j-c) = 1.7 °C/W) | Permits higher power density in space-constrained designs with minimal heatsink mass |
| High commutation capability (dI/dt ≥13 A/ms) | Ensures clean turn-off under inductive loads like induction motors without false re-triggering |
Applications
| Industrial Static Relay | Resistive Heating Control |
|---|---|
|
Use Scenario: Solid-state replacement of electromechanical contactors in PLC output modules driving 3–5 kW heaters. IC Role / Device Role / Timing Role: Main AC switching element performing zero-crossing or phase-angle controlled on/off switching at 50/60 Hz. Use Value: Eliminates contact wear and EMI from arcing; 25 A rating supports single-device control of large heating zones without parallel devices. |
Use Scenario: Temperature-regulated oven or furnace with PID-controlled phase-angle firing to maintain ±1 °C stability. IC Role / Device Role / Timing Role: Power stage triac triggered by optocoupler-driven gate pulses synchronized to AC zero-crossing reference. Use Value: Snubberless operation reduces bill-of-materials and PCB area; 35 mA IGT ensures compatibility with common MOC302x/MOC304x drivers. |
| AC Induction Motor Starter | Light Dimmer Module |
|
Use Scenario: Soft-start circuit for 1–2 HP single-phase induction motors in HVAC blowers or pumps. IC Role / Device Role / Timing Role: Phase-controlled triac limiting inrush current during startup by ramping conduction angle over 200–500 ms. Use Value: High dV/dt immunity prevents false triggering from motor back-EMF transients; insulated package avoids ground-loop issues in floating control circuits. |
Use Scenario: Embedded dimmer in smart wall switch supporting leading-edge phase-cut control of incandescent/halogen lamps. IC Role / Device Role / Timing Role: Main switching device gated by MCU via zero-crossing detector and timing logic for precise dimming resolution. Use Value: Low VGT (≤1.3 V) and tight IGT tolerance enable consistent turn-on across temperature; 2.5 kV insulation supports Class II double-insulated consumer product compliance. |
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 |
|---|---|---|---|
| BTA24-600BWRG | Standard 4-quadrant version with 50 mA max IGT; lower dV/dt immunity (500 V/µs same, but no snubberless optimization) | Requires external snubber for inductive loads; suitable when gate drive margin is ample and cost is prioritized | Select if legacy design uses 4Q triggering or gate driver can supply >50 mA peak current |
| T2535-600G | D²PAK surface-mount package; identical electrical specs (35 mA IGT, 600 V, 25 A), Rth(j-c) = 0.8 °C/W | Enables automated assembly and higher power density; requires thermal pad layout per Figure 14 footprint | Select for space-constrained, high-volume SMT production where board-level thermal management is optimized |
Compared with BTA24-600BWRG, the CWRG variant offers superior noise immunity and reduced component count; versus T2535-600G, it trades SMT scalability for through-hole mechanical robustness and simplified thermal interface in low-to-mid volume industrial assemblies.
Availability
BTA24-600CWRG is available at Aetrix Electronics and suitable for industrial static relays, resistive heating systems, and AC motor starter circuits requiring stable component supply with long lifecycle visibility.
Supply support for BTA24-600CWRG 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
This part belongs to ST's BTA series of insulated triacs - engineered specifically for safety-certified, snubberless AC power control in mains-connected equipment where isolation, reliability, and thermal efficiency are critical.
FAQ
What is the maximum allowable case temperature for continuous 25 A operation?
The datasheet specifies IT(RMS) = 25 A at Tc = 75 °C for the insulated TO-220AB package. Exceeding 75 °C case temperature requires derating per Figure 2; sustained operation above 75 °C risks thermal runaway due to positive temperature coefficient of on-state voltage.
Can BTA24-600CWRG be used in 4-quadrant triggering configurations?
No - the "CW" suffix denotes snubberless 3-quadrant operation (quadrants I, II, III only). Quadrant IV triggering is not characterized or guaranteed; attempting it may result in unreliable turn-on or premature failure due to insufficient dV/dt immunity in that quadrant.
Is the mounting tab electrically connected to any internal terminal?
No - the TO-220AB insulated package features dielectric isolation between the copper tab and A2 terminal, verified by 2.5 kV RMS insulation test per UL1557. The tab must be grounded or left floating per system safety requirements; it is never tied to A2 internally.
What gate resistor value is recommended when driving from an MOC3023 optocoupler?
With MOC3023's 1 A peak output and 35 mA IGT requirement, a 150 Ω series gate resistor limits peak current to ~80 mA while ensuring full turn-on within 1 µs. This value balances fast triggering against optocoupler stress and EMI reduction per ST AN437 application note.
BTA24-600CWRG 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):
- 25 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 250A, 260A
- Current - Gate Trigger (Igt) (Max):
- 35 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
BTA24-600CWRG FAQ
1.How can I place an order for BTA24-600CWRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA24-600CWRG 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 BTA24-600CWRG reliable?
The price and inventory of BTA24-600CWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA24-600CWRG is usually 5 days.
3.What payment methods are accepted for BTA24-600CWRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTA24-600CWRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTA24-600CWRG?
BTA24-600CWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA24-600CWRG 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 BTA24-600CWRG?
For technical support, including BTA24-600CWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA24-600CWRG requirements.
6.How does Aetrix verify that BTA24-600CWRG is sourced from the original manufacturer or authorized distributors?
All BTA24-600CWRG 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 BTA24-600CWRG meets industry standards.
7.What is the process for return or replacement of BTA24-600CWRG?
All BTA24-600CWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTA24-600CWRG, 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 BTA24-600CWRG part is unused and in its original packaging.
Return procedure for BTA24-600CWRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BTA24-600CWRG Tags
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