Diode for Solar Panels – 30PV045HW
The 30PV045HW is a heavy-duty 30-amp, 45-volt bypass diode designed specifically for photovoltaic (PV) modules.
It is installed inside the solar panel’s junction box across each cell string.
When part of the panel becomes shaded, the diode safely redirects current, preventing hot-spots and avoiding power loss in the rest of the array.
This is a direct replacement for failed or damaged bypass diodes in most standard 36-cell and 72-cell solar panels.
Key Features:
30 A forward current rating
45 V reverse voltage
Low forward-voltage drop (Schottky) → better efficiency
Axial lead design for easy soldering inside junction boxes
High-temperature capable for PV module environments
Prevents hot-spots and shading losses
Suitable for repair of most solar-panel models
Typical Applications:
Solar-panel junction box repair
Bypass diode replacement
PV system maintenance
Protection of series-connected cell strings
In the video below they show how to test and replace a diode in your solar panel
