SS18A is a common Schottky barrier diode, which is a surface mount device and adopts SMA package. It is widely used in modern electronic circuits due to its low forward voltage drop and fast switching characteristics.

Technical Parameters

  • Maximum reverse voltage (VRRM): 80V
  • Average forward rectified current (IF): 1A
  • Forward voltage drop (VF): Typical 0.85V (at IF=1A)
  • Maximum reverse leakage current (IR): 0.05mA (at TA=25°C)
  • Operating temperature range: -55°C to+150°C

These parameters indicate that SS18A is suitable for low-voltage, medium-current applications, and its low forward voltage drop helps reduce power loss.

Package

SS18A is generally available in DO-214AC (SMA) surface mount package,which is compact and easy to mount automatically. Therefore, it is suitable for modern high-density circuit board design.

Features and Advantages

  • Low forward voltage drop: reduces power loss and improves energy efficiency
  • Fast switching speed: suitable for high-frequency circuits
  • No reverse recovery time: avoids energy loss during switching
  • Compact package: suitable for miniaturization of portable devices.

Typical Applications

  1. Power circuit:
  • Output rectification of switching power supply (SMPS)
  • DC-DC converter
  • Polarity protection diode
  1. High-frequency circuit:
  • RF detector
  • Mixer
  • High-frequency rectification
  1. Logic circuit:
  • Clamping diode
  • Protection of TTL logic gate
  1. Solar system:
  • Prevent battery reverse discharge
  • Bypass diode
  1. Other applications:
  • Power management of battery-powered equipment
  • Low-voltage drop rectification application

Selection Suggestions and Precautions

  • When using, pay attention to heat dissipation and PCB copper foil design to avoid affecting the life due to overheating;
  • Avoid exceeding the reverse peak voltage to prevent the diode from breakdown and damage.

Summary

Schottky diodes have become an indispensable component in modern electronic design due to their low forward voltage drop, fast switching characteristics and compact package size. Understanding their characteristic parameters, application scenarios and usage precautions will help engineers make reasonable choices in various power management and high-frequency circuit designs.

More Information

For datasheet and more details of SS18A, please visit the website:

https://semiware.com/en/schottky-diode/ss18a

About Semiware
Semiware has a comprehensive product lineup of circuit protection device products. The company leverages its technology in the semiconductor field and application background in end products to serve customers in the electronics, automotive and industrial markets. For more information, please visit semiware official website: https://semiware.com/en/

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