ARPS1020A5/ARPS1050A5
Radiation-Hardened 20V, 8A / 50V, 4A Smart High–Side Power Switch Family
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Product Overview
The ARPS1020A5 / ARPS1050A5 is a radiation-hardened by design family of power switches with integrated FET that is ideally suited for space, and other applications demanding radiation tolerance and high reliability. The 50 V variant supports the 28 V nominal bus voltage typically found in power distribution systems of a spacecraft, while the 20 V variant is ideal for a 12 V bus or at lower voltage loads such as 5 V and 3 V. With a 3 mm X 5 mm space plastic package, the switch can also benefit compact phased array systems where power switching of amplifier elements is needed. The devices also offer a user-configurable current trip threshold as well as a current sense telemetry output. A proprietary design enables balanced current sharing in parallel devices to support higher current applications.
- 20 V, 8 A, 23 mΩ RDSON
- 50 V, 4 A, 57 mΩ RDSON
- Industry’s smallest eFuse 3 mm x 5 mm 24-pin QFN
- True current sharing in paralleled implementation
- Over-temperature protection, short protection, and programmable over-current protection
- Adjustable soft-start time
- Fault reporting and current sense outputs for external telemetry, fault management, and health monitoring
- Guaranteed break-before-make operation
- TID/SEE resilience to 100krad (Si) /LET = 72 MeV*cm2/mg
- Supports standard 3.3 V ,5 V, and 12 V power rails
- Supports 28 V unregulated Spacecraft power bus
- Superior SWaP-C
- Extends current capacity for higher power applications
- Higher reliability for the most demanding missions and applications
- Limits in Rush current
- Detect and contain system level faults
- Avoids hot switching
- Radiation-Hardened against Single Event Effects (SEE)
- Power distribution systems
- Load shedding
- Switching of cold spared power domains
- Heater switching
- Load current monitoring for on-orbit bias tuning
- Load current monitoring for latchup detection
- Fine granularity power domain latchup recovery
- Phased array antenna element control
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Block Diagram
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ARPS1020A5 3 mm x 5 mm QFN Package
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ARPS1050A5 3 mm x 5 mm QFN Package
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ARPS1050A5 Pinout
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ARPS1050A5 Pinout
Technical Documentation
★ = Top documentation for this product
| Type | Title | Format | Date | |
|---|---|---|---|---|
| ★ | Datasheets | ARPS1020A5/ARPS1050A5 Radiation-Hardened 20V, 8A / 50V, 4A Smart High–Side Power Switch Family | 19 Mar 2026 | |
| ★ | Product Flyer | ARPS1020A5/ARPS1050A5 Overview | 20 Mar 2026 | |
| ★ | Application Note | ARPS1020A5/ARPS1050A5: Space Power Protection and Control Using Radiation-Hardened eFuses | 02 Feb 2026 | |
| Reports | ARPS1020A5/ARPS1050A5 Material Content Report | 16 Feb 2026 | ||
| Product Brochure | Apogee Semiconductor Product Catalog 2026-H1 | 20 Mar 2026 | ||
| White Paper | The Logic of Cold Sparing Enabling Resilient Systems with Advanced Components | 23 May 2025 | ||
| White Paper | Limit the Impact of COTS Failures in Commercial Space with Apogee’s Relbridge (Co-authored by JPL) | 23 May 2025 | ||
| Quality | Product Grades and Quality Flows | 11 Jun 2025 |
Design and Development
★ = Top documentation for this product
| Type | Title | Format | Date | |
|---|---|---|---|---|
| ★ | Hardware | ARPS10x0A5-EVB Evaluation Board (EVB) User’s Guide | 02 Feb 2026 | |
| ★ | Hardware | ARPS1020A5/ARPS1050A5 EU Declaration of Conformity (DoC) | 13 Feb 2026 | |
| ★ | Model | ARPS1020A5/ARPS1050A5 eFuse QSPICE User’s Guide | 02 Feb 2026 | |
| ★ | Model | ARPS1020A5/ARPS1050A5 eFuse QSPICE Simulation Testbench | ZIP | 02 Feb 2026 |
| ★ | CAD Footprints, Symbols, & 3D Models | ARPS1050A5 Schematic Symbol, Footprint, and 3D Model | CAD Model | 13 Feb 2026 |
| ★ | CAD Footprints, Symbols, & 3D Models | ARPS1020A5 Schematic Symbol, Footprint, and 3D Model | CAD Model | 13 Feb 2026 |
ARPS10x0A5-EVB Top and Bottom Side Pictures
Ordering
Flight A-Grade, B-Grade, and C-Grade parts available soon.
| Part Number | Packaging | Pedigree | Package | Pins | Burn-In | Lead Finish | Standard Lead Time (weeks) | RFQ | Purchase |
|---|---|---|---|---|---|---|---|---|---|
| ARPS1020A5ENQ-R | Reel | Evaluation | QFN | 24 | No | NiPdAu | 4 | Contact Us | Contact Us |
| ARPS1020A5ENQ-J | Tray | Evaluation | QFN | 24 | No | NiPdAu | 4 | Contact Us | Contact Us |
| ARPS1020A5-EVB | - | Evaluation | EVB | 24 | No | - | 6 | Contact Us | Contact Us |
| ARPS1050A5ENQ-R | Reel | Evaluation | QFN | 24 | No | NiPdAu | 4 | Contact Us | Contact Us |
| ARPS1050A5ENQ-J | Tray | Evaluation | QFN | 24 | No | NiPdAu | 4 | Contact Us | Contact Us |
| ARPS1050A5-EVB | - | Evaluation | EVB | 24 | No | - | 6 | Contact Us | Contact Us |