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STMicroelectronics BTW69-1000RG
- Part No.:
- BTW69-1000RG
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TOP-3
- Datasheet:
-
BTW69-1000RG.pdf
- Description:
- SCR 1KV 50A TOP3
- Quantity:
- Payment:
- Shipping:
Inventory:3,857
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Product details
Overview
BTW69-1000RG from STMicroelectronics is a 50 A RMS, 1000 V repetitive peak off-state voltage (VDRM/VRRM) insulated-packaged SCR thyristor in RD91 package, featuring 610 A non-repetitive surge current (ITSM), 1.0 °C/W junction-to-case thermal resistance, and 2500 VRMS insulation rating - deployed in solid-state relays, industrial welding inverters, and high-power AC motor soft-start circuits.
For engineers reviewing the BTW69-1000RG datasheet, BTW69-1000RG pinout, BTW69-1000RG application, or BTW69-1000RG equivalent, key selection criteria include commutation robustness (dV/dt ≥1000 V/µs at 125 °C), low on-state voltage (VTM ≤1.9 V @ 100 A), clip-bonded thermal performance, and UL 1557-certified 2500 VRMS isolation for safety-critical power control.
Technical Context
This SCR operates as a latching unidirectional power switch triggered by gate current (IGT ≤80 mA), with critical design behaviors defined by its high dV/dt immunity (≥1000 V/µs), low dynamic resistance (RD ≤8.5 mΩ), and thermal stability across −40 °C to +125 °C junction range. Its clip-bonded RD91 package enables direct conduction cooling and supports high I²t fusing capability (1680 A²s).
The device requires gate trigger pulses meeting minimum 8 mA / 1.3 V specifications and sustains conduction until anode current falls below holding current (IH ≤150 mA). It is not suitable for phase-angle control without external snubbing due to high dv/dt sensitivity in inductive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 50 A - Continuous sinusoidal load current handling at 70 °C case temperature |
| VDRM / VRRM | 1000 V - Maximum repetitive blocking voltage in forward/reverse direction |
| ITSM (tp = 8.3 ms) | 610 A - Surge current capacity for single half-cycle fault events |
| Rth(j-c) | 1.0 °C/W - Enables 50 W max power dissipation with 50 °C case-to-ambient delta |
| Vins (1 min) | 2500 VRMS - UL 1557-certified isolation barrier between main terminals and heatsink |
| dV/dt (Tj = 125 °C) | ≥1000 V/µs - Immunity to false triggering under fast transient voltage stress |
| VTM (ITM = 100 A) | ≤1.9 V - Low conduction loss contributing to <100 W thermal load at full RMS current |
Pinout & Package
The BTW69-1000RG uses the RD91 insulated package: epoxy body (UL94 V0), screw-mountable baseplate, conduction-cooled structure, and 0.9–1.2 N·m mounting torque specification. Dimensions: 40.0 × 27.0 × 14.0 mm (L×W×H), weight 20 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main power input terminal | Carries full load current into device; electrically isolated from heatsink via 2500 VRMS barrier |
| Cathode (K) | Main power return terminal | Completes conduction path; referenced to heatsink potential only through isolation barrier |
| Gate (G) | Trigger control input | Accepts 8–80 mA pulse to initiate latching; requires current-limited drive to avoid IGM = 8 A damage limit |
Key Features
| Feature | Design Value |
|---|---|
| Clip-bonded construction | Reduces thermal resistance to 1.0 °C/W and improves surge current distribution vs wire-bonded SCRs |
| UL 1557-certified insulation | 2500 VRMS isolation enables direct mounting to grounded heatsinks in Class I safety systems |
| High commutation capability | dV/dt ≥1000 V/µs and I²t = 1680 A²s support reliable turn-off in inductive AC line switching |
| Low on-state voltage | VTM ≤1.9 V at 100 A minimizes conduction losses and heatsink sizing in 50 A continuous applications |
Applications
| Industrial Welding Inverters | Solid-State Relays (SSR) |
|---|---|
Use Scenario: Primary-side AC switching in IGBT-gated inverter welders requiring precise zero-crossing turn-on and high di/dt tolerance. IC Role / Device Role / Timing Role: Main AC line commutated switch controlling transformer primary current; triggered synchronously with AC zero-crossing. Use Value: 610 A ITSM withstands arc initiation surges; 2500 VRMS isolation eliminates need for additional creepage barriers in compact chassis designs. | Use Scenario: High-reliability contactless switching in HVAC zone controllers and industrial PLC output modules. IC Role / Device Role / Timing Role: Power semiconductor replacing electromechanical relay contacts; latched during AC half-cycle conduction. Use Value: 50 A RMS rating supports 12 kW resistive loads at 240 VAC; UL-certified isolation meets EN 60730 safety requirements. |
| High-Power Motor Soft-Start | DC Excitation Control for Large Generators |
Use Scenario: Phase-controlled voltage ramping for 30–100 HP induction motors to limit inrush current and mechanical stress. IC Role / Device Role / Timing Role: Back-to-back configured SCR pair per phase; gated with adjustable delay angle for controlled voltage rise. Use Value: 1000 V VDRM accommodates 480 VAC systems with 2× safety margin; 1.0 °C/W Rth(j-c) allows forced-air heatsinking without liquid cooling. | Use Scenario: Field winding excitation regulation in synchronous generators where DC field current must be precisely modulated. IC Role / Device Role / Timing Role: Half-wave rectifier SCR in controlled DC supply feeding rotor windings; triggered at variable conduction angles. Use Value: Low VTM (≤1.9 V) reduces power loss in high-current DC paths; IH ≤150 mA ensures stable hold-on during low-field operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, insulated SCR applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST's BTW69-1200RG | Higher VDRM/VRRM (1200 V); identical IT(RMS), package, and thermal specs | Better suited for 600 VAC industrial systems or 480 VAC with elevated transients | Select when system peak line voltage exceeds 1000 V or transient immunity margin is critical |
| Littelfuse S4065L | Lower IT(RMS) (40 A); same 1000 V rating; TO-247 package (non-insulated) | Requires external isolation hardware; limited to lower continuous current loads | Choose only if board-level isolation is already implemented and 40 A rating suffices |
Compared with BTW69-1000RG, the BTW69-1200RG offers higher voltage headroom without thermal or packaging trade-offs, while the S4065L sacrifices 20% RMS current capacity and introduces isolation design complexity - making BTW69-1000RG optimal for 50 A, 1000 V insulated switching where reliability and thermal efficiency are prioritized.
Availability
BTW69-1000RG is available at Aetrix Electronics and suitable for solid-state relays, industrial welding equipment, and high-power motor control applications requiring stable component supply, long-term lifecycle assurance, and UL-certified isolation integrity.
Supply support for BTW69-1000RG 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The BTW69 series belongs to ST's high-power insulated SCR product line, engineered specifically for safety-critical AC power switching where galvanic isolation, surge robustness, and thermal efficiency are mandatory.
FAQ
What is the maximum allowable gate trigger pulse width for BTW69-1000RG?
The gate trigger pulse width must not exceed 20 µs to avoid exceeding the peak gate current rating of 8 A. Longer pulses risk irreversible gate junction damage. ST recommends using short, current-limited pulses (e.g., 10–15 µs) with IG ≥2×IGT (≥16 mA) to ensure reliable turn-on across temperature and aging conditions.
Can BTW69-1000RG be used in DC switching applications?
No - BTW69-1000RG is a standard (non-self-commutated) SCR and cannot be turned off by gate control in DC circuits. It requires external commutation (e.g., forced reverse bias or current interruption) to reset conduction. For DC switching, consider GTOs, IGCTs, or IGBT-based solutions instead.
Is heatsink mounting torque specified for the RD91 package?
Yes - ST specifies a mounting torque of 0.9 to 1.2 N·m for the RD91 package's M4 screws. Under-torque risks thermal interface voids and overheating; over-torque may crack the epoxy housing or deform the baseplate, compromising 2500 VRMS isolation integrity and thermal performance.
Does BTW69-1000RG meet RoHS and REACH requirements?
Yes - BTW69-1000RG complies with RoHS Directive 2002/95/EC and REACH Regulation (EC) No. 1907/2006. ST confirms full material declaration compliance and provides substance documentation upon request through authorized distributors or ST's ECOPACK portal.
BTW69-1000RG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TOP-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Voltage - Off State:
- 1 kV
- 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
BTW69-1000RG FAQ
1.How can I place an order for BTW69-1000RG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTW69-1000RG 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 BTW69-1000RG reliable?
The price and inventory of BTW69-1000RG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTW69-1000RG is usually 5 days.
3.What payment methods are accepted for BTW69-1000RG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTW69-1000RG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTW69-1000RG?
BTW69-1000RG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTW69-1000RG 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 BTW69-1000RG?
For technical support, including BTW69-1000RG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTW69-1000RG requirements.
6.How does Aetrix verify that BTW69-1000RG is sourced from the original manufacturer or authorized distributors?
All BTW69-1000RG 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 BTW69-1000RG meets industry standards.
7.What is the process for return or replacement of BTW69-1000RG?
All BTW69-1000RG units undergo pre-shipment inspection (PSI). If there is an issue with BTW69-1000RG, 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 BTW69-1000RG part is unused and in its original packaging.
Return procedure for BTW69-1000RG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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