SS520 Schottky Diode: High-Current 5A Schottky Rectifier for Industrial Power Circuits

Home News Daily Highlight SS520 Schottky Diode: High-Current 5A Schottky Rectifier for Industrial Power Circuits

2026-07-30 27

As new energy power supplies, industrial adapters, battery charging equipment and high-current power conversion circuits keep upgrading, high-current Schottky rectifiers become indispensable core components for secondary-side rectification, anti-reverse protection and freewheeling circuits. SS520, a high-power Schottky diode launched by Slkor, adopts mature metal-semiconductor barrier technology. With the core strengths of 200V high reverse withstand voltage, 5A large average rectified current and controllable forward voltage drop, it provides stable, high-efficiency and cost-effective rectification solutions for medium and high-current power supply systems.

Physical photo of SS520 tiny package

High 200V Reverse Withstand Voltage, Strong Anti-Surge Capability

Most conventional medium-current Schottky diodes only support 100V or 150V reverse voltage, which cannot meet the demand of high-voltage industrial power circuits. SS520 features a rated reverse voltage of 200V, with abundant voltage margin reserved. It can effectively resist instantaneous voltage surges, inductive back EMF and switching spikes generated during equipment startup and shutdown, avoiding reverse breakdown and permanent damage of the diode. It is fully compatible with widely used voltage systems including 24V, 48V, 72V industrial power supplies, covering various medium-to-high voltage power conversion scenarios that ordinary Schottky diodes cannot support.

5A Large Continuous Rectification Current, Stable High-Current Operation

SS520 is rated for an average rectified current of 5A, capable of long-term stable operation under large load current. Under full-load working conditions, the device maintains steady conduction without severe thermal runaway. Compared with small-signal low-current diodes, it greatly reduces the number of parallel components required for high-current circuits, simplifies PCB layout design, lowers material costs and shortens product development cycles. It can reliably handle continuous heavy current loads such as lithium battery charging, industrial power rectification and motor drive freewheeling.

Controlled Forward Voltage Drop to Reduce Conduction Loss

At rated operating conditions, the forward voltage drop of SS520 is only 0.95V. When conducting large currents, the power loss converted into heat is effectively controlled, which helps lower the overall temperature rise of power equipment and improve energy conversion efficiency. For battery charging devices and energy storage power supplies that run continuously for a long time, the low conduction loss can significantly reduce power waste and extend the service life of the whole machine.

Balanced Reverse Leakage Performance for Stable Long-Term Operation

Its reverse leakage current is controlled at 1mA under rated reverse voltage. While maintaining high voltage and high current capacity, it avoids excessive static power consumption caused by overhigh leakage. The device undergoes strict wafer screening, high-low temperature cycling and aging tests before delivery. Its electrical parameters will not drift sharply under long-term continuous operation or fluctuating ambient temperatures, delivering outstanding long-term reliability for industrial and energy storage equipment that requires 24-hour uninterrupted operation.

Excellent Heat Dissipation & Standard Packaging for Mass Production

SS520 adopts mainstream standard power diode packaging with a large heat dissipation metal area. It has excellent thermal conductivity, which can quickly export heat generated during high-current operation and prevent thermal damage of the chip caused by heat accumulation. The product complies with RoHS lead-free environmental standards and fits automatic high-speed SMT or through-hole assembly production lines, supporting large-scale mass manufacturing for power supply manufacturers. The device maintains stable performance within a wide temperature range, and is applicable to indoor industrial equipment, outdoor energy storage equipment and vehicle-mounted power modules with varying temperature environments.

Diverse Application Scenarios

Supported by the combination of 200V high voltage resistance and 5A large current capacity, SS520 is widely used in medium and high-current power rectification fields:

New energy charging equipment: On-board chargers for electric two-wheelers, small lithium battery energy storage charging modules, portable power station rectifier circuits;
Industrial power adapters: 24V/48V industrial switching power supplies, servo auxiliary power supplies, instrument power rectification loops;
Motor drive circuits: Freewheeling protection for DC brush motors, small water pumps and fans to absorb inductive counter electromotive force;
Vehicle-mounted electrical systems: Automotive low-voltage auxiliary power supply, vehicle refrigerator and air conditioner power rectification;
Household high-power appliances: LED high-power drive power supplies, inverter small home appliances anti-reverse protection circuits.

Practical Engineering Design Guidelines

Reserve sufficient safety margin in circuit design: Limit the actual long-term continuous working current below 4A, and control the peak reverse voltage within 160V to extend the service life of the diode;
Optimize PCB heat dissipation layout: Reserve enough copper foil area around the diode pins to accelerate heat dissipation, especially for long-term full-load operation scenarios;
Avoid frequent overcurrent impact: If the circuit contains frequent large inrush current, add buffer absorption circuits to reduce instantaneous current stress on the diode;
Match heat dissipation accessories for high-temperature environments: When the equipment works in high-temperature closed spaces, add heat sinks to reduce the junction temperature of the device and prevent thermal aging.

Product Summary

SS520 high-current Schottky diode integrates 200V high reverse withstand voltage, 5A large average rectified current and low forward voltage drop, solving the pain points of ordinary Schottky diodes such as insufficient voltage resistance and weak heavy-current bearing capacity. With balanced leakage characteristics, good heat dissipation performance and standard universal packaging, it becomes a cost-effective mainstream rectifier device for medium and high voltage, large current power conversion, charging rectification and anti-reverse protection circuits. Slkor continuously provides high-performance power semiconductor devices for new energy, industrial control, vehicle electronics and consumer power supply industries, helping manufacturers improve power conversion efficiency and enhance product stability.

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