20SQ045 Schottky Barrier Rectifier Diode, 20A 45V, Solar Panel Diode - 3 Pack

20SQ045 Schottky Barrier Rectifier Diode

Key Features

• Part Number: 20SQ045
• Technology: Schottky Barrier Rectifier
• Forward Current (Io): 20A
• Maximum Repetitive Peak Reverse Voltage (Vr): 45V
• Low Forward Voltage Drop (Vf): 0.55V @ 20A
• Package: R-6 Axial
• Mounting Type: Through Hole
• Characteristics: Low power loss, high efficiency, low leakage current
• Compliance: Lead-Free / RoHS Compliant

Replaces / Cross-Reference Part Numbers

• Direct replacement for diodes marked 20SQ045.
• May substitute for other Schottky diodes with equivalent electrical specifications (20A, 45V) and physical package (R-6 Axial). Verify circuit requirements before substitution.

Compatibility & Fitment

• Designed for low-voltage, high-frequency inverters, free-wheeling diodes, and polarity protection applications.
• Commonly used as a blocking or bypass diode in solar panel junction boxes and DC power systems.
• The R-6 axial package is intended for through-hole mounting on a printed circuit board (PCB) or for point-to-point wiring.

When to Replace

• Component tests as a short circuit, allowing current to flow in both directions.
• Component tests as an open circuit, blocking current flow in the forward direction.
• Associated fuse or circuit protection device repeatedly fails.
• Noticeable decrease in circuit voltage output or efficiency.
• Visible signs of overheating, such as discoloration or damage to the component body.

Installation Tips

• Observe polarity. The stripe on the diode's body indicates the cathode (negative) lead. Incorrect installation will cause circuit failure.
• When soldering, use a heat sink on the lead between the component body and the solder joint to prevent heat damage.
• Avoid bending leads too close to the diode body to prevent stress on the internal seal.
• Ensure sufficient clearance and airflow around the component for heat dissipation, especially in applications approaching the 20A current rating.