The XTE-HF from Spectrolab is a Space Qualified Triple Junction Solar Cell that is suitable for medium earth orbit missions. It has an efficiency of 32.1 %, an open circuit voltage of 2.782 V, and a short-circuit current density of 18.0 mA/cm2. This high-fluence solar cell has a voltage at a maximum power of 2.490 V and a current density at a maximum power of 17.4 mA/cm2. It has a solar absorptance value of 0.89 and an emittance value of 0.85. The solar cell operates 1 deg cooler and has 20+ years of space heritage. It has a mass of 50-84 mg/cm2 and a thickness of 80-225 micrometers.
