Gate Turn Off Thyristor W1263YH250 High Current Scr

Overview of Fast Turn-Off Thyristor (GTO)

A Fast Turn-Off Thyristor, commonly referred to as a Gate Turn-Off Thyristor (GTO), is a type of semiconductor device that can be turned on and off by its gate signal. Unlike standard thyristors, which can only be turned on by a gate signal and turned off by reducing the current flowing through them below a certain threshold (holding current), GTOs can be actively turned off by applying a negative gate pulse. This capability allows for more precise control over the device’s switching behavior.
GTOs are used in high-power applications such as motor drives, power supplies, and inverters, where they facilitate rapid and controlled switching of large currents. They operate at higher currents and voltages than most other types of transistors, making them suitable for heavy-duty industrial and commercial applications.

Features of Fast Turn-Off Thyristor (GTO)

Active Turn-Off Capability: Can be turned off by applying a negative gate pulse, providing better control over switching.
High Power Handling: Capable of managing high levels of power, with ratings often exceeding those of conventional thyristors.
Rapid Switching: Designed for fast turn-on and turn-off times, enabling efficient operation in power conversion circuits.
Large Current Capacity: Able to handle significant currents, making them ideal for applications requiring substantial power delivery.
High Voltage Tolerance: Can withstand high voltages, contributing to their reliability in demanding environments.
Low On-State Voltage Drop: Minimizes power loss when conducting, improving overall efficiency.
Gate Drive Requirements: Requires careful design of gate drive circuits to ensure reliable turn-on and turn-off operations.
Complex Control Circuits: Due to the need for both positive and negative gate pulses, control circuitry can be more complex compared to simpler thyristors.
Snubber Circuits: Often require snubber circuits to protect against voltage spikes during switching.
Thermal Management: Efficient heat dissipation is crucial due to the high power levels involved.

( Gate Turn Off Thyristor W1263YH250 High Current Scr)

Specification of Gate Turn Off Thyristor W1263YH250 High Current Scr

The Gate Turn Off Thyristor (GTO) W1263YH250 is a high-power semiconductor device designed for demanding industrial applications requiring precise control over high currents and voltages. This device combines the robustness of a traditional Silicon Controlled Rectifier (SCR) with the added capability of being turned off via a gate signal, enabling greater flexibility in power electronic systems.

Key Specifications:
– Voltage Ratings: The W1263YH250 features a repetitive peak off-state voltage (V_DRM) of 2500V and a reverse blocking voltage (V_RRM) of 2500V, ensuring reliable operation in high-voltage circuits.
– Current Handling: It supports an average forward current (I_TAV) of 1263A and a surge current (I_TSM) of up to 20kA, making it suitable for high-current applications such as motor drives and power converters.
– Gate Characteristics: The gate trigger current (I_GT) is typically 250mA, with a gate trigger voltage (V_GT) of 3V. The turn-off gain (G_Q) is optimized to ensure efficient switching with minimal gate drive power.
– Dynamic Performance: The device offers a turn-off time (t_q) of 15-25 microseconds and a critical rate of rise of off-state voltage (dv/dt) exceeding 1000V/μs, ensuring stable operation under transient conditions.
– Thermal Properties: With a maximum junction temperature (T_j) of 125°C and a thermal resistance (R_th) of 0.08°C/W (junction-to-case), the GTO is engineered for efficient heat dissipation.
– Mechanical Design: The module is housed in a press-pack or stud-type package, providing robust mechanical integrity and compatibility with standard heat sinks for high-power systems.

Applications: The W1263YH250 is ideal for use in high-voltage direct current (HVDC) transmission, industrial inverters, traction systems, and renewable energy converters. Its ability to handle rapid switching and high surge currents makes it a preferred choice for systems requiring reliability under extreme electrical stress.

Compliance: The device adheres to international standards for safety and performance, including RoHS compliance, ensuring environmental sustainability. Its rugged construction and high repeatability make it a dependable solution for mission-critical power electronics infrastructure.

( Gate Turn Off Thyristor W1263YH250 High Current Scr)

Applications of Gate Turn Off Thyristor W1263YH250 High Current Scr

The Gate Turn Off Thyristor (GTO) W1263YH250 is a high-current silicon-controlled rectifier designed for demanding power electronics applications. Unlike conventional thyristors, this GTO can be turned on and off via gate signals, enabling precise control over switching operations without requiring voltage reversal. With its high current-handling capacity, robust thermal performance, and ability to manage voltages up to 2500V, the W1263YH250 excels in environments requiring reliability, efficiency, and rapid switching.

In industrial motor drives and automation systems, the W1263YH250 regulates high-power motors, enabling variable speed control in machinery such as conveyor systems, pumps, and compressors. Its fast turn-off capability minimizes energy loss and enhances operational efficiency. For renewable energy applications, this GTO is integral to inverters within solar and wind power systems, converting DC to AC with minimal losses while stabilizing grid connections.

High-voltage direct current (HVDC) transmission systems leverage the W1263YH250 for efficient long-distance power transfer, reducing energy dissipation in cross-country or subsea cables. In electric traction, it drives locomotives, trams, and electric vehicles by managing high currents in propulsion systems, ensuring smooth acceleration and braking.

Industrial heating and welding equipment benefit from the thyristor’s precise current control, enabling consistent performance in induction heating furnaces and arc welding setups. Uninterruptible power supplies (UPS) and industrial power systems use the W1263YH250 for rapid switching during outages, maintaining stable voltage output.

Pulsed power applications, such as medical imaging (e.g., MRI machines) and scientific research equipment, rely on its ability to deliver high-current pulses with accuracy. Additionally, the device’s rugged construction ensures durability in harsh environments, including high-temperature or high-vibration settings.

The W1263YH250’s adaptability across industries stems from its balance of power density, thermal stability, and control precision. Whether in energy infrastructure, transportation, or heavy industry, this GTO thyristor provides a reliable solution for high-power switching challenges, supporting advancements in efficiency and sustainable technology.

Company Profile

PDDN Photoelectron Technology Co., Ltd.(sales@pddn.com) is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality Gate Turn Off Thyristor W1263YH250 High Current Scr, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of Gate Turn Off Thyristor W1263YH250 High Current Scr

What is a Gate Turn Off Thyristor (GTO) W1263YH250? The Gate Turn Off Thyristor W1263YH250 is a high-current semiconductor device designed to control power in high-voltage applications. Unlike standard SCRs, it can be turned off by applying a negative gate pulse, enabling precise control over switching operations. It supports high voltage (up to 2500V) and current (average forward current up to 1263A), making it ideal for industrial inverters, motor drives, and power supplies.

How does the GTO W1263YH250 differ from a conventional SCR? Conventional SCRs require external commutation circuits to turn off, but the GTO W1263YH250 can be turned off directly via a high-negative-current gate signal. This eliminates the need for additional components, simplifies circuit design, and improves efficiency in high-power systems. Its rugged construction also ensures reliability under high-stress conditions like voltage spikes or rapid switching.

What are the typical applications of the W1263YH250 GTO Thyristor? This device is used in high-power environments such as traction systems for electric trains, industrial motor drives, renewable energy converters (e.g., wind/solar inverters), and HVDC (high-voltage direct current) transmission systems. Its ability to handle extreme currents and voltages makes it suitable for heavy-duty switching tasks in energy-intensive industries.

What are the key reliability features of the W1263YH250? The thyristor is built with a robust silicon wafer and advanced passivation layers to withstand thermal cycling and mechanical stress. It operates reliably within a wide temperature range (-40°C to 125°C) and features low leakage current. Additionally, it undergoes rigorous testing for surge current tolerance (up to 20kA) and voltage blocking capabilities, ensuring long-term durability in harsh environments.

What precautions should be taken when using the W1263YH250? Ensure proper heat dissipation via heatsinks or cooling systems, as excessive temperatures can degrade performance. Gate drive circuits must deliver precise negative pulse currents to avoid partial turn-off, which may damage the device. Avoid static discharge during handling, and adhere to recommended storage conditions (dry, room temperature). Always follow manufacturer guidelines for mounting and electrical connections to prevent mechanical or electrical failures.

( Gate Turn Off Thyristor W1263YH250 High Current Scr)