STR-L451

STR-L451 AC-DC Offline Switching Regulator

The STR-L451 from Sanken Electric is a high-performance isolated flyback switching regulator designed for reliable AC-DC power conversion applications. This integrated circuit features a 650V breakdown voltage rating and delivers up to 74W of power, making it ideal for industrial, consumer electronics, and telecommunications power supply designs.

Key Features

• Isolated Flyback Topology - Provides electrical isolation between input and output for enhanced safety and noise immunity
• 650V Breakdown Voltage - High voltage capability enables universal AC input designs (85-265VAC) for global market compatibility
• 74W Power Output - Suitable for medium-power applications including set-top boxes, adapters, and auxiliary power systems
• Integrated Protection - Built-in current limiting, overload, and over-temperature protection ensures reliable operation and extends product lifetime
• Through-Hole Package - Easy assembly and reliable mechanical connection in STA-10L configuration for production-ready designs
• RoHS Compliant - Meets environmental standards for lead-free manufacturing and global regulatory compliance
• Low Standby Power - Optimized for energy efficiency in compliance with modern power consumption standards
• Wide Operating Range - Designed for stable performance across varying load and line conditions

Applications

The STR-L451 is perfect for AC-DC power supplies in consumer electronics, industrial equipment, LED lighting drivers, and auxiliary power systems requiring reliable isolated power conversion. Common applications include:

• Switch-mode power supplies (SMPS) for home appliances
• Battery chargers and adapters
• Industrial control systems and instrumentation
• LED driver circuits for lighting applications
• Telecommunications equipment and networking devices
• Auxiliary power modules in automotive and medical equipment

Design Benefits

Engineers choose the STR-L451 for its proven reliability, comprehensive protection features, and ease of integration. The through-hole package simplifies prototyping and production assembly, while the integrated protection circuitry reduces external component count and overall BOM cost. With full traceability and long lifecycle availability, this component is ideal for designs requiring sustained production support.

Quality & Traceability

All STR-L451 components from HQICKEY come with full manufacturer traceability, date code tracking, and compliance documentation. We maintain rigorous quality control standards to ensure authentic components with verified specifications for your critical power supply designs.

Related Resources

Explore our complete selection of AC DC Converters, Offline Switchers for additional power conversion solutions. Visit the HQICKEY homepage to browse our full catalog of programmable logic, power management, and semiconductor components. For technical insights and industry updates, check out our Technical Blog.

• STR-L451.pdf