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Home > Products > Discrete Semiconductor Products > Thyristors > SCRs

STMicroelectronics BTW69-600RG

Name: BTW69-600RG
Brand: STMicroelectronics
SKU: BTW69-600RG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTW69-600RG

Manufacturer:: STMicroelectronics

Category:: SCRs

Package:: TOP-3

Datasheet:: BTW69-600RG.pdf

Description:: SCR 600V 50A TOP3

Quantity:: RFQ Add To RFQ list

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Inventory:673

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Product details

Overview

BTW69-600RG from STMicroelectronics is a 50 A RMS, 600 V repetitive blocking voltage insulated TRIAC in TOP3 package, designed for high-power AC switching in solid-state relays, welding equipment, and industrial motor control. It delivers 610 A non-repetitive surge current (8.3 ms), 2500 V_RMS isolation, and 50 A/µs critical dI/dt rating.

For engineers reviewing the BTW69-600RG datasheet, BTW69-600RG pinout, BTW69-600RG application, or BTW69-600RG equivalent, key selection criteria include its isolated TOP3 package, 80 mA max gate trigger current, 1.9 V max on-state voltage at 100 A, and UL 1557 compliance (E81734).

Technical Context

This insulated TRIAC operates as a bidirectional AC power switch with gate-controlled conduction initiation. Its internal ceramic insulation enables 2500 V_RMS isolation and eliminates need for external isolation components in high-voltage AC control circuits.

It features robust surge handling (610 A, 8.3 ms) and high dI/dt immunity (50 A/µs), making it suitable for inductive load switching in harsh industrial environments where voltage transients and rapid current rise are common.

Key Specifications

Parameter	Value and Actual Design Meaning
VDRM / VRRM	600 V - Maximum repetitive blocking voltage in both directions; defines maximum AC line voltage it can safely block.
IT(RMS)	50 A - Continuous RMS on-state current at Tc = 75 °C; sets thermal design limit for heatsink sizing.
ITSM (8.3 ms)	610 A - Non-repetitive surge current capability; supports short-term overload in motor start or weld initiation.
V_TM @ 100 A	1.9 V max - On-state voltage drop at high current; determines conduction loss and self-heating under load.
I_GT max	80 mA - Maximum gate trigger current required; defines minimum drive strength needed from control circuitry.
dI/dt critical	50 A/µs - Minimum rate of current rise before unintended turn-on; critical for inductive load snubber design.
V_ins	2500 V_RMS, 1 min - Isolation voltage between main terminals and case; satisfies reinforced insulation requirements per UL 1557.

Pinout & Package

BTW69-600RG uses the TOP3 insulated package - a through-hole, three-terminal power package with integrated ceramic isolation barrier between the case and main terminals. The case serves as the MT2 terminal, while MT1 and gate are isolated leads.

Pin/Terminal	Circuit Role	Design Meaning
MT1	Main Terminal 1	AC line input or load return path; electrically isolated from case; polarity-sensitive for triggering.
MT2	Main Terminal 2	Connected to metal case; serves as common reference and heat sink interface; must be mounted to isolated heatsink.
G	Gate	Control input for bidirectional conduction initiation; requires ≥8 mA trigger pulse with proper dv/dt margin.

Key Features

Feature	Design Value
Integrated ceramic isolation	Enables 2500 V_RMS reinforced insulation without external isolators, reducing BOM count and PCB area in safety-critical AC controls.
High surge current rating	610 A (8.3 ms) supports reliable operation during motor inrush, arc ignition, and short-circuit events in welding and SSR applications.
ECOPACK®2 compliance	Lead-free plating and halogen-free molding compound meet RoHS and HF regulatory requirements for industrial and consumer equipment.
UL 1557 certification	File E81734 validates isolation integrity and creepage/clearance - simplifies end-equipment safety certification for global markets.

Applications

Solid-State Relays (SSRs)

Industrial Welding Equipment

Use Scenario: Replacing electromechanical relays in PLC output modules and HVAC controllers requiring silent, bounce-free, long-life AC switching.

IC Role / Device Role / Timing Role: Bidirectional AC power switch controlled by low-voltage logic; triggered once per half-cycle to sustain conduction until current zero-crossing.

Use Value: 50 A RMS current handling and 2500 V_RMS isolation eliminate need for auxiliary isolation transformers or optocouplers in Class I equipment designs.

Use Scenario: Primary AC power switching in resistance spot welders and arc welders where high peak currents and thermal cycling occur.

IC Role / Device Role / Timing Role: Main power switch in primary-side AC control stage; gated synchronously with zero-crossing detection to minimize EMI and contact wear.

Use Value: 610 A surge rating and 50 A/µs dI/dt immunity prevent false triggering during high-di/dt weld initiation pulses.

High-Power Motor Control

Industrial Heating Systems

Use Scenario: Phase-angle or burst-fire control of 3–10 kW induction motors in conveyor drives and pump systems.

IC Role / Device Role / Timing Role: AC line commutated switch enabling variable torque/speed via firing angle adjustment; mounted directly to heatsink for thermal management.

Use Value: 0.9 °C/W junction-to-case thermal resistance allows efficient heat transfer to aluminum heatsinks, sustaining 50 A RMS at 75 °C case temperature.

Use Scenario: Power regulation in resistive heating elements for ovens, furnaces, and plastic extruders operating at 230/400 V AC.

IC Role / Device Role / Timing Role: Duty-cycle modulated AC switch delivering precise thermal energy; operated in burst-fire mode to avoid audible noise and transformer saturation.

Use Value: Low 1.9 V on-state voltage minimizes conduction losses at full load, improving system efficiency and reducing heatsink size requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar insulated TRIAC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTW69-600T	Tape-and-reel packaging; identical electrical specs and TOP3 insulation.	No difference in circuit function or thermal performance; only differs in logistics format.	Select when automated SMT placement is required; not suitable for manual or through-hole assembly.
TT605N600G	600 V, 55 A RMS, but non-isolated TO-247 package; requires external isolation for safety-critical use.	Lacks integrated 2500 V_RMS isolation; mandates additional creepage/clearance design and safety certification effort.	Choose only if board space permits external isolation and UL certification burden is acceptable.

Compared with BTW69-600T and TT605N600G, BTW69-600RG uniquely combines tube-packaged convenience, full UL-certified isolation, and industrial-grade surge resilience - eliminating trade-offs between manufacturability, safety compliance, and ruggedness.

Availability

BTW69-600RG is available at Aetrix Electronics and suitable for solid-state relays, welding equipment, and high-power motor control requiring stable component supply across multi-year production cycles.

Supply support for BTW69-600RG 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.

BTW69-600RG belongs to ST's high-power insulated TRIAC product line, engineered specifically for safety-compliant, high-reliability AC power control in industrial automation and energy infrastructure.

FAQ

What is the maximum allowable case temperature for continuous 50 A RMS operation?

The BTW69-600RG supports 50 A RMS continuous conduction at Tc = 75 °C, as specified in Absolute Maximum Ratings. Operation above this temperature requires derating per Figure 2 in DS13092 - e.g., 40 A RMS at 100 °C case temperature. Thermal design must maintain case temperature ≤75 °C under worst-case ambient and airflow conditions.

Does BTW69-600RG require a heatsink, and what thermal resistance is needed?

Yes - a heatsink is mandatory. With R_th(j-c) = 0.9 °C/W and maximum Tj = 125 °C, a heatsink with R_th(c-a) ≤ 41.1 °C/W is required to maintain Tc ≤ 75 °C at 50 A RMS (P_cond ≈ 95 W). Mounting torque must not exceed 1.2 N·m to preserve thermal interface integrity.

Can BTW69-600RG be used in DC circuits?

No - it is a bidirectional AC switch that commutates only at natural current zero-crossings. In DC applications, it will latch ON after triggering and remain conducting until gate signal is removed *and* anode current falls below holding current (IH ≤ 150 mA), which is impractical without forced commutation. Use a MOSFET or IGBT for DC switching.

Is the gate trigger sensitive to polarity, and what is the recommended gate drive waveform?

Yes - BTW69-600RG is a quadrant-I/III TRIAC; gate triggering requires positive voltage relative to MT1 for MT2-positive half-cycles, and negative voltage for MT2-negative half-cycles. A 20–100 µs pulse with ≥8 mA peak current and <100 ns rise time is recommended; RC snubbers may be needed to suppress dv/dt-induced false triggering.

BTW69-600RG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TOP-3

Packaging:: Tube

Product Status:: Active

Voltage - Off State:: 600 V

Voltage - Gate Trigger (Vgt) (Max):: 1.3 V

Current - Gate Trigger (Igt) (Max):: 80 mA

Voltage - On State (Vtm) (Max):: 1.9 V

Current - On State (It (AV)) (Max):: 32 A

Current - On State (It (RMS)) (Max):: 50 A

Current - Hold (Ih) (Max):: 150 mA

Current - Off State (Max):: 10 µA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 580A, 610A

SCR Type:: Standard Recovery

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TOP3

BTW69-600RG FAQ

1.How can I place an order for BTW69-600RG through Aetrix?

Please submit a Request for Quotation (RFQ) for BTW69-600RG 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 BTW69-600RG reliable?

The price and inventory of BTW69-600RG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTW69-600RG is usually 5 days.

3.What payment methods are accepted for BTW69-600RG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTW69-600RG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTW69-600RG?

BTW69-600RG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTW69-600RG 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 BTW69-600RG?

For technical support, including BTW69-600RG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTW69-600RG requirements.

6.How does Aetrix verify that BTW69-600RG is sourced from the original manufacturer or authorized distributors?

All BTW69-600RG 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 BTW69-600RG meets industry standards.

7.What is the process for return or replacement of BTW69-600RG?

All BTW69-600RG units undergo pre-shipment inspection (PSI). If there is an issue with BTW69-600RG, 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 BTW69-600RG part is unused and in its original packaging.

Return procedure for BTW69-600RG:

1.Submit a request within 90 days.

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

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