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6A4 6A 400V Silicon Rectifier Diode (5 Piece Pack)

Specification	Details
Current Rating	6.0 Amperes
Voltage Rating	400V (PIV)
Diode Type	Standard Recovery
Surge Current	400A (Peak)
Package Type	R-6 (Axial)
Material	Silicon Junction

Price

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₹ 25.42

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Barcode: 43432

Product Description

The 6A4 Silicon Rectifier Diode is a high-current power component designed for robust AC-to-DC rectification and circuit protection. Rated at a significant 6 Amperes, this diode is engineered to handle much higher power loads than the standard 1N400x or 1N540x series. With a 400V Peak Inverse Voltage (PIV) rating, it is ideal for use in medium-voltage power supplies, battery chargers, and industrial control circuits. Housed in the larger R-6 axial package, the 6A4 features thick leads and a high-mass body to effectively dissipate heat during continuous high-current operation, ensuring long-term reliability in demanding environments.

Key Features

High Current Capacity: Supports up to 6A of continuous forward current, making it suitable for high-power DC motor drivers and large LED arrays.
Exceptional Surge Handling: Capable of withstanding non-repetitive peak surge currents up to 400A, protecting the system during initial power-on "in-rush."
Low Forward Voltage Drop: Designed for high efficiency, minimizing energy loss as heat even when operating near its maximum current limit.
Rugged R-6 Package: The heavy-duty axial lead construction provides superior mechanical strength and improved thermal management compared to smaller diodes.
Reliable 400V Rating: Offers plenty of headroom for 12V, 24V, 48V, and even 110V DC systems, safely blocking reverse voltage transients.

Technical Details

Mounting Style: Through-hole (Axial).
Polarity: Cathode (negative) is marked by a distinct silver/white band on the cylindrical body.
Operating Temperature: -65°C to +150°C.

Prototyping and Engineering Tips from Robogears

Thermal Management: CRITICAL: At 6 Amperes, this diode will generate noticeable heat. Do not mount it flush against the PCB. Leave a 5mm to 10mm gap between the diode body and the board to allow for airflow, and use wide copper traces to help "wick" heat away through the thick leads.
Building a High-Power Bridge: You can use four of these 6A4 diodes to create a heavy-duty bridge rectifier. This setup can comfortably power large DC actuators or high-wattage audio amplifiers that require a stable 6A DC supply.
Flyback Protection for Large Inductors: If you are switching high-power solenoids or large DC motors, the 6A4 is an excellent "Flyback" or "Freewheeling" diode. Its 400A surge rating allows it to safely absorb the massive energy spikes generated when a large magnetic coil is deactivated.
Polarity Verification: Always connect the side with the silver band (Cathode) toward the positive (+) side of the output or the load. Installing a 6A diode backward in a high-current circuit can lead to blown fuses or damage to the power source.
Lead Handling: Because the leads on the R-6 package are quite thick, use a heavy-duty plier to bend them. Avoid putting mechanical stress on the point where the lead enters the plastic body, as this can cause internal micro-cracks in the silicon junction.

Package Includes

5 x 6A4 6A 400V Silicon Rectifier Diodes

Disclaimer: Ensure the continuous current in your circuit does not exceed 6.0A. For high-frequency switching power supplies (above 10kHz), consider using an "Ultra-Fast" or "Schottky" diode, as the 6A4 is a standard recovery diode optimized for 50Hz/60Hz applications. Always verify circuit polarity with a multimeter before applying full power.

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