How hot can these diodes safely operate? 27 volts and only 6 amp and a lot hotter than expected...

General rule with a lot of electronics is, “if you can touch it it’s fine” diodes will generate heat the higher you get to their wattage limit. Make sure they aren’t touching anything that is potentially flammable. If they are running to hot for the location they are in to be safe you may need diodes with a higher amperage rating. Mine run a little warm at 8 amps but hasn’t been an issue.

Can you run two of these parallel to support 30A at 48V?

Yes and no. Two in parallel will double amperage handling but not voltage. Also note the close you get to the peak rating of a diode, the hotter it will get and in turn fail sooner. I would recommend getting a diode with a higher voltage rating.

Can it use for 12 volts?

Yes. The diodes are rated for a maximum of 45 volts. They will handle anything up to that.

Is thr 45v reverse the allowed amt to flow back into the panel even if the panel outputs 40v ? Will the diode allow the 40v to pass in one direction?

The diode blocks/allows whatever voltage it is connected to up to a maximum of 45 volts. Putting a 45 volt rated diode in a 40 volt circuit does not mean the voltage passing through the diode will increase to 45 volts. In fact the diode will hold back about .5 volts, so the result of passing 40 volts through it will be about 39.5 volts output.

25pcs 15sq045 Schottky Diodes 15a 45v Diode Axial Schottky Blocking

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Description

⚡ Power your projects with speed and strength — don’t get left behind!

BUILT TO LAST - Wide operating temperature range from -55°C to 150°C for durability in extreme environments.
VOLTAGE RESILIENCE - Withstands up to 45V reverse voltage, ensuring reliable protection and performance.
LIGHTNING FAST RECOVERY - Ultra-fast recovery time under 500ns minimizes energy loss and boosts efficiency.
LOW FORWARD VOLTAGE DROP - Operates at just 0.55V forward voltage at 15A, maximizing energy savings and reducing heat.
POWERHOUSE CURRENT HANDLING - Supports a robust 15A average rectified current for demanding solar and power applications.

The 15SQ045 Schottky Diode pack includes 25 genuine axial diodes designed for high-current (15A) and moderate voltage (45V) applications. Featuring ultra-fast recovery times (≤500ns) and low forward voltage drop (0.55V), these diodes optimize efficiency and reliability in solar panels and power circuits. Packaged for ESD safety and rated for extreme temperatures (-55°C to 150°C), they are the go-to choice for professionals demanding performance and durability.

Specifications

ASIN	B07VG4DG8N
Best Sellers Rank	#274,184 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #176 in Schottky Diodes
Date First Available	August 16, 2019
Item Weight	1.76 ounces
Manufacturer	C YUMU
Package Dimensions	4.92 x 3.35 x 0.63 inches

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$12.92

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(25pcs) 15SQ045 Schottky Diodes 15A 45V, Diode Axial Schottky Blocking Diodes for Solar Cells Panel

Description

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