Protection with the properties of an ideal 4A diode

Product detailed description

The 3–30 V / 4 A ideal diode module protects the powered circuit against reverse polarity and prevents current backflow from the output to the source. Instead of a conventional diode, it uses two MOSFETs with a control circuit that monitors input and output voltages, ensuring the voltage drop is only up to 0.2 V within the rated current range and the module remains almost cool during operation. It is suitable for charging accumulators (preventing batteries from discharging back into the charger or a disconnected power source), for connecting two power sources in parallel (diode OR), or as reverse polarity protection in battery and solar applications. The ground is common between the input and output; only the positive rail is switched.

Specifications:

• Function: ideal diode – reverse polarity and reverse current protection
• Input voltage: 3–30 V DC
• Current: max. 4 A continuous, 6 A peak
• Voltage drop: max. 0.2 V (within rated current range)
• Switching elements: 2× MOSFET (SO-8)
• Connection: common ground (GND), switched positive rail
• Pins:
  • IN+ / IN−: input – power source, charger
  • Vo+ / Vo−: output – load, battery
• Operating temperature: −40 °C to +80 °C
• Mounting: 2 mounting holes
• Dimensions: approx. 24 × 16 mm

Package contents:

• 1× 4A ideal diode module

Note:

• The module is not a surge protector – it does not limit or stabilise voltage; it only protects against reverse polarity and reverse current flow.
• For higher currents, use the 8A version (8 A continuous, 12 A peak).
• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.