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⚡ Keep your energy flowing forward—no backfeed, no compromise!
The MD 110A-16 Solar Diode is a high-current, anti-reverse diode designed for photovoltaic and automotive energy systems. Supporting AC voltages up to 400VAC and DC voltages from 3V to 1000V, it ensures efficient one-way current flow while preventing damaging backfeed. To maintain peak performance and longevity, pairing with a suitable heatsink and thermal compound is essential. Trusted by professionals for reliable protection in solar panels and battery setups.











| Customer Reviews | 4.4 out of 5 stars 90 Reviews |
6**S
Did as designed.
Was used to make circuit one directional. It worked to prevent camper battery backfeeding voltage to few accessories that were on the same switching solenoid.
J**0
Cost Effective, High-current Rated Diode Assembly
This high current rated, isolating diode assembly works well with higher output solar panels. It will however, begin to over heat (when the load draws more than 10 or 20 amperes) if it is not properly heat sunk. I used an old aluminum power supply heat sink (along with some heat sink thermal compound) to significantly improve the diode's operating temperature range and thereby, its operating current carrying capacity. (See the attached photo). Mounting it to a simple aluminum or steel plate should also work well as a heat sink. I would suggest using some type of heat transfer compound (such as Wakefield Thermal Compound - Part Number 120-2) to improve the heat transfer characteristics.
Z**P
No issues after almost a year or more.
Does as advertised I think doesn’t seem to be an issue for what I needed it for had to do some slight steps with wiring to make it work however works great. Would recommend if you need this capacity have no issues since bought.
A**R
Good product
I was able to use this Diode in a way it was never meant to be used. I put it on an ONAN GenSet. And it is still working fine.
T**.
As intended
Does it's job, was a bit confusing at first but now I'm using them to separate charge. I'm a newbie to solar
J**M
Excellent throughput.
Pushed up to 15volts, and the drop was only .9 volts after a fuse. That was before my system regulated the power to the necessary 12 volt standard. Handles all my system can safely push—up to 330amps and will still be in 80% heat safety zone—In fact my 200 amp fuse will blow at 320amps; and since I usually run at 125amps, I am super protected. No concern the capacitor will push/surge back the wrong way now.
F**.
Doesn't work with smart golf chargers
My golf cart smart charger wouldn't recognize it was connected to the battery when this Diode is in the circuit. Probably isn't the diodes fault but dont try to follow a certain YouTube video for a charging safety lock circuit. I bought another one and it did the same thing.
D**Y
Perfect
I have a complicated circuit on the RV with a thorny problem that I wasn't sure how to fix. I believe this is just what the doctor ordered!
S**E
Works Well
4 stars because its a little bit on the expensive side, but otherwise works well and I like the way it mounts. Using to prevent back feed of capacitors from 700w 12v inverter to my noco onboard charger causing voltage spikes that would set off high voltage alarm on the charger, would buy again.
Y**U
Diode solaire
Excellent produit merci
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