As global low-Earth orbit (LEO) satellite internet constellations enter the large-scale deployment phase, demand in the commercial space industry for highly reliable, radiation-resistant semiconductor solutions capable of large-scale delivery has surged. As a professional distributor with nearly three decades of experience in the semiconductor supply chain, Shenzhen Mingjiada Electronics Co., Ltd. leverages its global network of over 500 manufacturers and a stock inventory of 2 million SKUs to offer immediate availability of STMicroelectronics’ LEO series radiation-hardened chips, covering product lines such as logic devices, power rectifiers, DC-DC converters, and microcontrollers, helping customers meet the rigorous challenges of extreme-environment applications such as low-Earth orbit satellite constellations, on-board power management, and on-board computers.
Core Application Scenario 1: Low-Earth Orbit Satellite Constellations—On-Board Power Management and Power Conversion
The large-scale deployment of low-Earth orbit satellite constellations places unprecedented demands on the radiation resistance, power density, and cost-effectiveness of power systems. STMicroelectronics’ LEO series of power devices and power management chips, specifically designed for low-Earth orbit applications, precisely meet the core requirements of the commercial space industry: “lightweight, low-cost, and high-reliability.”
LEO1N58xx Series Radiation-Hardened Low-Voltage Rectifier Diodes
STMicroelectronics’ LEO1N58xx series of radiation-hardened low-voltage rectifier diodes is developed based on space-grade technology certified by the European Space Components Consortium (ESCC). Manufactured using processes compliant with the automotive industry’s IATF 16949 standard, these diodes feature wafer-level traceability and flight-ready qualification, making them suitable for direct use in space missions.
Part Number Type Forward Current Maximum Reverse Voltage Operating Junction Temperature
LEO1N5819 Schottky Diode 1A 45V -40°C ~ 150°C
LEO1N5822 Schottky Diode 3A 40V -40°C ~ 150°C
LEO1N5811 Ultra-Fast Recovery Diode 6A 150V -40°C ~ 175°C
All three devices feature a radiation-hardened design, with a Total Ionizing Dose (TID) tolerance of up to 300 krad(Si) and a Single-Event Burnout (SEB) immunity of 60 MeV/cm²/mg, making them suitable for critical circuits such as switching power supplies and high-frequency DC-DC converters. Mingjiada Electronics maintains a stock of models such as the LEO1N5819AF and supports both small-batch sample orders and large-volume mass production deliveries.
LEOPOL1 Point-Load Buck Converter
STMicroelectronics’ LEOPOL1 point-load buck converter is the latest addition to the LEO series, designed specifically for low-orbit satellite power systems. It delivers an output current of up to 7A and supports out-of-phase current sharing in parallel configurations to expand output capacity.
Key Radiation-Hardened Parameters:
Total Ionizing Dose (TID): 50 krad(Si)
Total Non-Ionizing Dose (TNID): 3×10¹¹ protons/cm²
Single-Event Effect (SEE): 62 MeV·cm²/mg
The LEOPOL1 utilizes BCD6-SOI (Silicon-on-Insulator) technology and a radiation-hardened design methodology, making it particularly well-suited for providing stable power to onboard FPGAs, processors, and other loads.
Core Application Scenario 2: Onboard Computers and Logic Control Systems
The attitude control (AOCS), data processing, and communication subsystems of low-Earth orbit satellites require highly reliable logic devices as core building blocks.
LEOAC00PT-D Radiation-Hardened Four-Channel NAND Gate
The LEOAC00PT-D is an aerospace-grade, radiation-hardened, plastic-encapsulated four-channel, two-input NAND gate from STMicroelectronics, housed in a TSSOP-20 package and designed specifically for low Earth orbit space applications.
Radiation-Hardened Performance Highlights:
Total Ionizing Dose (TID): 50 krad(Si)
Single-Event Latch-Up (SEL) Immunity: LET resistance up to 62.5 MeV·cm²/mg
Low Outgassing Characteristics: RML <1%, CVCM <0.1%, compliant with spacecraft material outgassing standards
Anti-Whisker Design: NiPdAu pin plating + gold wire bonding to prevent the risk of tin whisker short circuits
This device complies with the ST-LEO specification, operates within a voltage range of 2 V to 6 V, has a propagation delay of only 8 ns (at 4.5 V, 50 pF), and supports a wide operating temperature range of -40°C to +125°C. It is widely used in satellite attitude control systems, on-board data processing units, and power management and communication telemetry subsystems. Mingjiada Electronics maintains a stock of over 1,000 units in Shenzhen, all from the latest production batches (23+), with immediate shipping available.
Core Application Scenario 3: Satellite User Terminals and Phased Array Antennas
On the ground user terminal side of low-Earth orbit (LEO) satellite communications, electronic beamforming is a key technology for tracking high-speed moving satellites. STMicroelectronics, leveraging its proprietary BiCMOS technology (which combines the high-frequency performance of bipolar transistors with the low power consumption of CMOS), has cumulatively delivered over 5 billion RF antenna chips to projects such as Starlink.
Mingjiada Electronics simultaneously supplies matching aerospace-grade MCUs and interface chips to support terminal-side signal processing and system control.
Mingjiada Electronics’ Supply Advantages
In response to the aerospace industry’s procurement requirements—which emphasize small batches, a wide variety of products, and high reliability—Mingjiada Electronics provides the following assurances:
Full-chain product coverage: The LEO series includes radiation-hardened logic gates, rectifier diodes, DC-DC converters, LDO regulators, LVDS transceivers, ADCs, and other products across the entire product line.
Genuine Product Guarantee: All products are sourced directly from ST or authorized channels, ensuring full traceability and eliminating refurbished or counterfeit items.
Flexible Stock Availability: We provide rapid response and stock support for small-batch trial production during the R&D phase and urgent after-sales inventory needs.
Global Logistics Network: Coordinated operations between our Shenzhen and Hong Kong warehouses enable rapid 48-hour delivery worldwide.
Summary: Whether building large-scale low-Earth orbit satellite constellations or developing highly reliable on-board power and computing systems, STMicroelectronics’ LEO series—leveraging differentiated technologies such as FD-SOI, BCD6-SOI, and BiCMOS—has become a core semiconductor supplier in the commercial space sector. As a specialized spot supplier of STMicroelectronics’ LEO series radiation-hardened chips, Mingjiada Electronics is committed to providing a robust supply chain backbone for global aerospace customers.
[Inquire Now] To obtain inventory and pricing information for STMicroelectronics’ LEO Series chips, please contact the Mingjiada Electronics sales team.
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