Solar Bypass Diodes for Satellites

Block Diagram

Function: 
Current through a series of solar cells is limited by the resistance, or bias condition, of the “highest resistance” cell. When a cell is shaded, its resistance to the flow of current will increase. The increased resistance of even one cell will limit the overall current that the solar panel can provide to the battery bank. A bypass diode is necessary to avoid this potential inefficiency. Under normal operating conditions, the bypass diode is reversed biased and essentially “invisible” to the overall system. In order to maximize overall system efficiency, the bypass diode should have the lowest forward voltage (VF) drop possible.

Schottky technology provides the most efficient diode for this application; diodes with current ratings of 6 to 16 amps are required.

Central Semiconductor manufactures a wide portfolio of efficient semiconductor components.

Solar Bypass Diode (Bare Die): 

Learn more about our CPD31X (Die) 10A, 60V (optimized for solder process)