STTH108RL

Single Diodes Overview

The STTH108RL is an ultra-fast recovery rectifier manufactured by STMicroelectronics, designed for high-efficiency power switching applications. It features a single diode configuration housed in an SMA (DO-214AC) surface-mount package. Key electrical parameters include a maximum repetitive peak reverse voltage of 800 V and a continuous forward current rating of 1 A. The device exhibits a low forward voltage drop of 1.65 V at rated current and a fast recovery time of 75 ns, which minimizes switching losses and electromagnetic interference. It supports a maximum surge current of 20 A and operates with a leakage current of 5 uA. The component is rated for a maximum junction temperature of +175 C and utilizes planar technology for enhanced reliability.

Single Diodes Feature Summary

• Ultra-fast recovery characteristics enable reduced switching losses and lower EMI disturbances in high-frequency circuits.
• Planar technology construction ensures high reliability and stability under demanding thermal conditions.
• Low forward voltage drop contributes to improved overall system efficiency in power conversion stages.

Single Diodes Applications

• Free-wheeling diodes in DC-DC converters and power supplies
• Clamping circuits for voltage spike suppression
• Snubber networks in switch-mode power supply designs
• Demagnetization circuits in transformer-based power architectures

Single Diodes Procurement Notes

Verify the specific suffix RL against official STMicroelectronics documentation to confirm packaging details such as reel specifications or tape-and-reel dimensions. Ensure the ordering part number matches the required SMA package variant. Cross-reference the datasheet revision date to confirm parameter consistency. Confirm RoHS compliance status through the manufacturer's official declaration rather than distributor summaries. Validate that the requested quantity aligns with standard manufacturing lot sizes if bulk procurement is intended.

Single Diodes Selection Notes

Select this component when designing circuits requiring high-voltage blocking capability combined with rapid switching speeds. The 800 V rating suits primary-side rectification in offline flyback converters. The 1 A current capacity is appropriate for low-to-medium power isolated supplies. Consider the 175 C junction temperature limit for high-ambient environments. The SMA package offers space-saving advantages over through-hole alternatives for compact PCB layouts.

Single Diodes Part Context

The STTH108RL belongs to the STTH108 series of ultra-fast recovery diodes from STMicroelectronics. This family leverages planar technology to deliver robust performance in power electronics. The series is engineered specifically for applications where fast recovery time and low forward voltage are critical for efficiency. It complements other ST power discrete devices used in industrial and consumer power management systems.

Single Diodes Replacement Considerations

Consult official STMicroelectronics substitution guides for verified equivalents. Generic replacements may not match the 75 ns recovery time or 800 V rating. Verify pinout compatibility and thermal resistance characteristics before integrating alternative components into existing designs.