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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics BTB24-600CWRG

Name: BTB24-600CWRG
Brand: STMicroelectronics
SKU: BTB24-600CWRG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTB24-600CWRG

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-220-3

Datasheet:: BTB24-600CWRG.pdf

Description:: TRIAC ALTERNISTOR 600V 25A TO220

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Product details

Overview

BTB24-600CWRG from STMicroelectronics is a 600 V, 25 A RMS snubberless triac in TO-220AB uninsulated package, designed for high-commutation 3-quadrant AC switching in phase-control and on/off applications. It delivers 500 V/µs dV/dt immunity at 125 °C, 13 A/ms critical di/dt without snubber, and 0.85 V typical on-state threshold at 125 °C - enabling robust motor speed control and heating regulation in industrial power modules.

For engineers reviewing the BTB24-600CWRG datasheet, BTB24-600CWRG pinout, BTB24-600CWRG application, or BTB24-600CWRG equivalent, key selection criteria include verified 3-quadrant snubberless operation, gate trigger current ≤35 mA (Quadrants I–III), thermal resistance R_th(j-c) = 0.8 °C/W, and UL1557 recognition for reinforced insulation systems.

Technical Context

This triac operates in three quadrants (I, II, III) with snubberless capability, eliminating external RC networks in resistive and inductive loads. Its gate trigger sensitivity is specified at 35 mA max (VD = 12 V, RL = 33 Ω), and it sustains 500 V/µs off-state voltage transients at T_j = 125 °C with gate open.

Thermal design relies on low junction-to-case resistance (0.8 °C/W) and supports continuous RMS current up to 25 A at T_c = 100 °C. The device meets UL1557 for reinforced insulation and RoHS 2002/95/EC, with UL94 V0 flammability-rated epoxy package resin.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	25 A - Sustains full-sine AC load current up to 25 A at case temperature ≤100 °C without derating
VDRM / VRRM	600 V - Blocks repetitive peak off-state voltage up to 600 V across main terminals A2–A1
IGT (QI–QIII)	≤35 mA - Guaranteed gate trigger current for reliable turn-on under worst-case junction temperature
dV/dt (min)	500 V/µs - Immune to fast-rising off-state transients without false triggering at 125 °C
(dI/dt)c (min)	13 A/ms - Supports commutation of inductive loads without snubber circuitry
Rth(j-c)	0.8 °C/W - Enables efficient heat transfer to heatsink; allows 31.25 W dissipation at ΔT = 25 °C
VTM @ 35 A	≤1.55 V - Low conduction loss ensures <2.5 W power dissipation at 25 A RMS (sinusoidal)

Pinout & Package

BTB24-600CWRG uses the TO-220AB uninsulated package: metal tab (A2) electrically connected to main terminal A2, requiring isolation from heatsink unless referenced to A2 potential. Package dimensions comply with JEDEC TO-220AB standard (A = 15.2–15.9 mm, B = 10.0–10.4 mm, L = 2.65–2.95 mm).

Pin/Terminal	Circuit Role	Design Meaning
A1	Main Terminal 1 (MT1)	Reference terminal for gate drive; common return path for load current in most phase-control topologies
A2	Main Terminal 2 (MT2)	High-side main terminal; electrically tied to metal tab - must be isolated from heatsink or referenced accordingly
G	Gate	Control input for triggering conduction; requires ≤35 mA pulse to initiate latching in Quadrants I–III

Key Features

Feature	Design Value
Snubberless 3-quadrant operation	Eliminates external RC snubber in resistive and inductive AC loads - reduces BOM count and PCB area
UL1557 recognition	Validated for reinforced insulation systems per file #81734 - enables use in safety-critical industrial controls
Low R_th(j-c)	0.8 °C/W enables compact thermal design with minimal heatsink mass for 25 A continuous operation
High dV/dt immunity	500 V/µs at 125 °C prevents false triggering in noisy EMI environments like motor drives and dimmers
RoHS & halogen-free	Complies with EU Directive 2002/95/EC and UL94 V0 flammability - supports green manufacturing and end-of-life compliance

Applications

Industrial Heating Control

AC Motor Speed Regulation

Use Scenario: Solid-state relay replacement in electric furnace temperature controllers with zero-crossing or phase-angle firing.

IC Role / Device Role / Timing Role: Main AC power switch controlling heater element current via phase-controlled gating.

Use Value: Snubberless operation eliminates capacitor aging risk; 25 A RMS rating supports 5.5 kW resistive loads at 230 VAC.

Use Scenario: Single-phase induction motor speed control in HVAC blowers and conveyor drives.

IC Role / Device Role / Timing Role: Bidirectional AC switch modulating RMS voltage applied to motor windings.

Use Value: 13 A/ms critical di/dt supports inductive commutation without snubber; 600 V blocking handles 230 VAC + 20 % surge.

Light Dimming Systems

Static Power Switching

Use Scenario: Leading-edge dimmer circuits for incandescent and halogen lamps in commercial lighting panels.

IC Role / Device Role / Timing Role: Phase-controlled AC switch synchronizing gate pulses to AC zero-crossing for smooth brightness adjustment.

Use Value: 35 mA gate sensitivity ensures compatibility with low-power microcontroller GPIOs; 500 V/µs dV/dt prevents misfiring during lamp filament inrush.

Use Scenario: On/off switching in programmable logic controller (PLC) output modules driving solenoids and contactors.

IC Role / Device Role / Timing Role: High-reliability AC power switch replacing electromechanical relays in industrial automation I/O cards.

Use Value: UL1557 recognition validates safe isolation; 260 A non-repetitive surge rating withstands contactor coil inrush currents.

Equivalent & Alternatives

The following parts are listed as comparable options for similar snubberless triac applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTA24-600CWRG	TO-220AB insulated package; 2.5 kV RMS insulation voltage; same electrical specs	Required where galvanic isolation between heatsink and A2 is mandatory (e.g., floating ground systems)	Select when heatsink cannot be referenced to A2 potential and reinforced insulation is required.
T2535-600G	D²PAK surface-mount package; identical 35 mA IGT and 600 V rating; R_th(j-c) = 0.8 °C/W	Suitable for automated SMT assembly; lower profile but requires thermal pad layout per Figure 14	Select for space-constrained, high-volume PCB designs needing reflow-compatible packaging.

Compared with BTA24-600CWRG, BTB24-600CWRG offers identical electrical performance but eliminates insulation barrier - reducing thermal impedance by ~0.9 °C/W versus insulated variant. Versus T2535-600G, it provides through-hole mechanical robustness and simplified thermal mounting, though requiring manual or wave soldering.

Availability

BTB24-600CWRG is available at Aetrix Electronics and suitable for industrial heating control, AC motor speed regulation, light dimming systems, and static power switching requiring stable component supply across production lifecycles.

Supply support for BTB24-600CWRG 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, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

BTB24-600CWRG belongs to ST's high-current snubberless triac product line, engineered specifically for reliable, low-BOM-cost AC power control in industrial automation and energy-efficient appliances.

FAQ

What is the maximum junction temperature for continuous operation?

The BTB24-600CWRG has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at T_j = 125 °C is permitted only when case temperature remains ≤100 °C and thermal design maintains R_th(j-c) ≤0.8 °C/W. Exceeding 125 °C risks irreversible degradation of gate oxide integrity and latching reliability.

Can BTB24-600CWRG replace a standard 4-quadrant triac in existing designs?

No - BTB24-600CWRG is a 3-quadrant snubberless device (Quadrants I, II, III only) and does not support reliable triggering in Quadrant IV. Substituting it for a 4-quadrant part (e.g., BTB24-600BRG) may cause failure to trigger under negative gate voltage conditions or result in erratic commutation in fully bidirectional control circuits.

Is heatsink isolation required for the TO-220AB uninsulated package?

Yes - the metal tab is electrically connected to A2. If the heatsink is grounded or referenced to a different potential than A2, galvanic isolation (e.g., mica washer + thermal grease) is mandatory to prevent short circuits. Failure to isolate may damage control circuitry or violate safety standards such as UL1557.

What gate drive circuit is recommended for reliable triggering?

A DC-coupled gate driver delivering ≥35 mA peak current into 33 Ω load (per datasheet test condition) is required. Pulse width must exceed 10 µs, and gate voltage must reach ≥12 V. For microcontroller interfacing, a dedicated triac driver IC (e.g., MOC3021 with zero-crossing detection) or discrete transistor stage is recommended to ensure sufficient I_GT margin across temperature and aging.

BTB24-600CWRG 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

BTB24-600CWRG FAQ

1.How can I place an order for BTB24-600CWRG through Aetrix?

Please submit a Request for Quotation (RFQ) for BTB24-600CWRG 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 BTB24-600CWRG reliable?

The price and inventory of BTB24-600CWRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTB24-600CWRG is usually 5 days.

3.What payment methods are accepted for BTB24-600CWRG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTB24-600CWRG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTB24-600CWRG?

BTB24-600CWRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTB24-600CWRG 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 BTB24-600CWRG?

For technical support, including BTB24-600CWRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTB24-600CWRG requirements.

6.How does Aetrix verify that BTB24-600CWRG is sourced from the original manufacturer or authorized distributors?

All BTB24-600CWRG 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 BTB24-600CWRG meets industry standards.

7.What is the process for return or replacement of BTB24-600CWRG?

All BTB24-600CWRG units undergo pre-shipment inspection (PSI). If there is an issue with BTB24-600CWRG, 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 BTB24-600CWRG part is unused and in its original packaging.

Return procedure for BTB24-600CWRG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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