Systems / 1U Solar Panel

1U Solar Panel

Triple-junction solar power generation for 1U platforms.

EOS-1USP-DSH-07 / Flown on LOGSATS-2

Cells: 2x triple-junction GaInP2/GaAs/Ge
Efficiency: 30%, 32% on request
Sensors: Temperature + sun
Mass: 40 g

Overview

The EOS Orbit 1U Solar Panel generates power on two space-grade triple-junction GaInP2/GaAs/Ge cells at 30 percent efficiency, with 32 percent cells available on request. Integrated bypass and blocking diodes protect the string.

The panel carries temperature and sun sensors for attitude determination, and optional IMU and magnetorquer integration turns the panel into an attitude sensing and actuation surface. Variants mount on ±X/Y or ±Z faces of a 1U structure.

Features

2x triple-junction GaInP2/GaAs/Ge cells, 30% efficiency (32% on request)
Integrated temperature and sun sensors
Internal bypass and blocking diodes
Series or parallel panel connectivity
XY and Z face mounting variants
Optional IMU for ADCS, magnetorquer, RBF pin, custom cutouts

Specifications

Electrical

Cell type Triple-junction GaInP2/GaAs/Ge, space-grade

Cells 2 (60.36 cm² active area)

Cell efficiency 30%

Open-circuit voltage 5.48 V

Short-circuit current 525 mA

Max power point 4.84 V at 507 mA

Physical

Size, XY mount 83 x 97.5 x 1.6 mm

Size, Z mount 100 x 100 x 1.6 mm

Mass 40 g

Mounting 4x M2.5

Qualification

Thermal vacuum 8 cycles, -20 to +60 °C, < 10⁻⁵ Torr, 1 h dwell at extremes

Radiation TID evaluated to 20 krad (Si), SEE tolerance

Random vibration 14.1 gRMS, 20-2000 Hz

Mechanical

Heritage

Flown on LOGSATS-2. Launched January 15, 2025, on a SpaceX Falcon 9. 440 days of orbital operations.

Commission this system

Write to contact@eosorbit.com with your mission parameters. The engineering team responds with configuration options, lead time, and test documentation.

Contact engineering →

EOS-1USP-DSH-07 / datasheet on request