The SMEJ28AG/TR7 is a transient voltage suppressor (TVS) diode manufactured by Yageo. It is designed to protect sensitive electronic circuits from voltage transients that can occur due to lightning strikes, inductive load switching, and electrostatic discharge (ESD). The TVS diode clamps the voltage to a safe level, thereby preventing damage to downstream components.

Applications

• Power Supplies: Provides protection for power supplies against voltage surges.
• Industrial Equipment: Protects industrial control systems and automation equipment from voltage transients.
• Telecommunications Equipment: Protects telecommunication lines and equipment from lightning-induced surges.
• Automotive Electronics: Used in automotive electronic control units (ECUs) to protect against voltage transients and ESD.
• Consumer Electronics: Offers surge protection for various consumer electronic devices.

Features

• Unidirectional Protection: Protects against positive voltage transients.
• Surface Mount Package: Allows for automated assembly and efficient use of board space.
• High Surge Capability: Withstands high surge currents without degradation.
• Low Clamping Voltage: Limits voltage across the protected circuit during a surge.
• RoHS Compliant: Complies with the Restriction of Hazardous Substances (RoHS) directive.

Benefits

• Enhanced Circuit Protection: Provides protection against voltage transients and ESD.
• Improved System Reliability: Prevents damage to sensitive components, increasing system reliability.
• Reduced Downtime: Minimizes downtime and maintenance costs by preventing damage from surge events.
• Prolonged Product Lifespan: Protects equipment from voltage stresses, extending its lifespan.
• Simplified Design: Easy integration into circuit designs due to its compact footprint.

Additional Details

The SMEJ28AG/TR7 has a standoff voltage of 28V, which is the maximum voltage it can withstand without conducting. During a surge, it clamps the voltage to a specific level. Its peak pulse power dissipation indicates its surge handling capacity. The operating temperature ranges from -55°C to +150°C. Refer to the manufacturer's datasheet for detailed electrical characteristics, surge handling, and other parameters.