Gaqqee 40A 65A 100A Ideal Diode Module – Solar Reverse Protection

Gaqqee High-Current Ideal Diode Module — 40A / 65A / 100A

Upgrade your solar charging system or battery circuit with the Gaqqee High-Current Ideal Diode Module. Available in three current ratings — 40A, 65A, and 100A — this MOSFET-based module delivers ultra-low forward voltage drop, near-zero standby consumption, and lightning-fast reverse turn-off protection in a compact, easy-to-install design. Made in Mainland China.

Why Choose This Ideal Diode Module?

• Three Current Ratings: Select 40A, 65A, or 100A to match your exact application — from compact lithium battery packs to high-demand industrial power supplies.
• No Grounding Required: Simply wire it in series with the positive terminal, just like a conventional diode — drastically simplifying system design.
• No Voltage Limit on Input: Compatible with virtually all mainstream solar panels and battery pack voltages (minimum input ≥1V; no upper limit).
• Backflow & Reverse Connection Protection: Protects circuits from reverse current and accidental reverse polarity connections.
• 2 μs Reverse Turn-Off Response: Extremely fast switching ensures your circuits are protected almost instantaneously.
• Ultra-Low On-Resistance: Down to ≈0.22 mΩ (100A version), minimizing heat generation and maximizing efficiency.
• Replaces Schottky Diodes: Ideal for high-current applications where Schottky diodes produce excessive heat and voltage drop.

Key Applications

• Solar Charging Systems: Prevents reverse current flow from battery back to panel during low-light conditions.
• Automotive & Industrial Power: Guards against reverse voltage in automotive, industrial, and lithium-ion battery systems.
• Multi-Power-Supply Parallel Operation: Enables redundant power supply configurations and achieves zero standby consumption.
• Low-Loss Unidirectional Conduction: Significantly reduces voltage drop and heat compared to conventional diodes in high-current circuits.

Full Technical Specifications

40A Version

65A Version

100A Version

Important Usage Notes

• Do not exceed the rated operating current — maintain a 20% safety margin.
• Reverse voltage must remain below 40V at all times; allow a 30% margin for voltage spikes.
• Not suitable for use as a freewheeling diode in AC circuits or switching power supply freewheeling applications.
• Ensure adequate heat dissipation — module temperature must not exceed 110°C. Attach a heat sink to the back of the module if needed.
• Not ideal for devices operating at currents below 10 mA that are sensitive to minor voltage fluctuations (~0.3–0.4V).

What's in the Box

• Ideal Diode Module × 1 (your selected current rating: 40A, 65A, or 100A)

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Frequently Asked Questions

Q: What is the difference between the 40A, 65A, and 100A ideal diode module versions?

A: The three versions differ in the number of MOSFETs used and their corresponding current-handling capacity. The 40A version uses 1 MOSFET (peak 60A), the 65A version uses 2 MOSFETs in parallel (peak 80A), and the 100A version uses 4 MOSFETs in parallel (peak 150A). Higher current versions also feature lower on-resistance, resulting in less heat generation and greater efficiency at high loads.

Q: Can I use this ideal diode module with any solar panel voltage?

A: Yes — this module has no upper input voltage limit, making it compatible with virtually all mainstream solar panel and battery pack voltages, as long as the minimum input voltage is at least 1V. Note that the reverse voltage must always remain below 40V, so maintain a 30% margin to account for voltage spikes.

Q: Does the ideal diode module require a ground connection to operate?

A: No. One of the key advantages of this module is that it requires no ground connection. It can be wired in series directly into the positive terminal of your circuit, just like a conventional diode, which simplifies installation and reduces system complexity significantly.

Q: Is this module suitable for microcontrollers or very low-current devices?

A: This module is not recommended for devices operating at currents below 10 mA that are sensitive to small voltage fluctuations (approximately 0.3–0.4V). It is also not a replacement for a freewheeling diode in switching power supplies. For high-current solar charging, automotive, battery protection, or industrial power applications, it performs excellently.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.