STMicroelectronics STTH112A 1.2kV 1A Fast Recovery Diode in SMA Package

Introducing the STMicroelectronics STTH112A: High-Performance Fast Recovery Diode for Demanding Power Applications

In modern power electronics systems, component reliability and efficiency are paramount. The STMicroelectronics STTH112A fast recovery diode emerges as a critical solution for engineers seeking high-voltage rectification capabilities combined with rapid switching performance. This surface-mount device (SMA package) delivers exceptional specifications while maintaining compatibility with automated PCB assembly processes, making it ideal for next-generation power conversion designs.

Technical Excellence in Diode Design

At the heart of the STTH112A's impressive performance lies its ability to handle extreme voltage conditions while maintaining fast switching characteristics. With a maximum DC reverse voltage (VR) of 1200 V and 1A average rectified current capacity, this diode bridges the gap between high-voltage requirements and compact packaging. Its forward voltage drop remains exceptionally controlled at just 1.9 V under maximum rated current, significantly reducing conduction losses in critical applications.

Advanced Switching Capabilities

Engineered for high-frequency operation, the STTH112A achieves its remarkable 75 ns reverse recovery time through STMicroelectronics' proprietary silicon technology. This fast recovery characteristic enables efficient operation in switching power supplies running at frequencies beyond typical silicon diode limitations. The device's performance classification as a 'Fast Recovery Diode' with recovery time ≤ 500ns at currents > 200mA makes it particularly suitable for modern converter topologies requiring minimal switching losses.

Thermal Performance and Reliability

Operating temperature specifications reflect the component's industrial-grade durability. With a maximum junction temperature of 175°C, the STTH112A maintains stable performance under demanding thermal conditions. Its surface-mount DO-214AC (SMA) package provides excellent thermal dissipation characteristics while enabling automated pick-and-place assembly. The device's low leakage current specification (5 µA @ 1200 V) ensures minimal standby losses and enhanced reliability in high-voltage applications.

Design Flexibility and Application Scope

The STTH112A's combination of electrical and mechanical characteristics makes it a versatile component across multiple power electronics domains. Key application areas include:

In industrial settings, the diode serves as a reliable rectification solution for high-voltage DC power supplies and motor drive circuits. Its fast recovery characteristics prove particularly beneficial in variable frequency drives and induction heating systems. Renewable energy applications benefit from the device's robustness in solar inverters and EV charging station power conversion stages. The component's surface-mount compatibility also makes it suitable for automated manufacturing processes in consumer electronics power supply units.

Manufacturing and Packaging Advantages

Supplied in tape-and-reel packaging (TR), the STTH112A facilitates efficient automated PCB assembly. The DO-214AC package dimensions maintain industry-standard footprints while providing enhanced creepage distances for high-voltage applications. Designers appreciate the component's form-factor compatibility with existing SMA footprint designs, allowing easy performance upgrades in established systems.

Conclusion: A Benchmark in High-Voltage Diodes

The STTH112A represents STMicroelectronics' commitment to innovation in power semiconductor technology. By combining 1200 V blocking capability with fast recovery characteristics in a compact surface-mount package, this diode addresses critical needs in modern power electronics design. Engineers seeking reliable rectification solutions for applications ranging from industrial automation to renewable energy systems will find the STTH112A delivers the perfect balance of performance, reliability, and design flexibility.

Tags: High-Voltage Diode, Power Electronics, Fast Recovery Rectifier, Surface Mount Diode, Industrial Power Supplies