company blog about Large Supply and Stock Recycling: STMicroelectronics LEO1N5819AF Radiation-Hardened Schottky Barrier Rectifier

Mingjiada Electronics offers bulk supply and inventory recycling of STMicroelectronics LEO1N5819AF radiation-hardened Schottky rectifiers—45V/1A SOD128Flat package delivers high-reliability power solutions for low-Earth orbit applications

LEO1N5819AF Product Overview

The LEO1N5819AF is a 1 A, 45 V Schottky diode in a miniature surface-mount SOD128Flat package, operating within a junction temperature range of -40 °C to +150 °C. It is classified as a radiation-hardened rectifier. This device complies with STMicroelectronics' LEO Universal Specification for space-grade radiation-hardened plastic power discrete components, meeting the stringent performance and reliability requirements of low Earth orbit satellites within tight budgets. This AECQ101-based specification balances space savings, reduced cost of ownership, enhanced radiation resistance, and guaranteed high-volume production capability.

The LEO1N5819AF rectifier is suitable for switch-mode power supplies and high-frequency DC-DC converters, such as low-voltage high-frequency inverters, OR loops, free-wheeling circuits, blocking diodes, or reverse polarity protection circuits. It is particularly well-suited for mission-critical systems like avionics and high-reliability industrial equipment.

Features Of LEO1N5819AF

• Maximum reverse voltage = 45 V

• Average forward current = 1 A

• Maximum junction temperature = 150 °C

• DC thermal resistance RTH(JL) = 13 °C/W

• ESCC-certified diode chip

• SOD128 surface-mount package

• Reliability certification based on AEC-Q101

• Ultra-compact package: 2.5 x 4.8 = 12 mm²

• Fast switching and low forward voltage

• Radiation test performance:

– TID 300 krad(Si) at high dose rate

– TNID 3.1011 particles/cm²

– No SEB effect under full VRWM at 60 MeV.cm²/mg

Applications Of LEO1N5819AF

• Low Earth Orbit (LEO) space applications

• Satellite constellation systems

• High-reliability equipment

• Output high-frequency rectification

• Flywheel diodes

• Converter rectifier rings

• Reverse polarity protection

Massive Inventory & Stable Supply

Mingjiada Electronics ensures long-term bulk supply of LEO1N5819AF through over 2 million SKUs in stock and robust sourcing channels. With nationwide warehousing centers, we support 48-hour express delivery to meet flexible demands from sample testing to mass production.

Extensive Recycling Scope 

Beyond LEO1N5819AF, Mingjiada continuously recycles the full STMicroelectronics LEO series portfolio, including LEO1N5811AF, LEO1N5822AF, radiation-hardened logic devices, and power management chips. We provide efficient channels for inventory liquidation and capital recovery to original manufacturers, distributors, and end-user factories.

Supply & Recycling Contact:

Shenzhen Mingjiada Electronics Co., Ltd.

Tel: +86 13410018555 (Mr. Chen)

Email: sales@hkmjd.com

Website: www.integrated-ic.com