The SD20-1950R9UBM1 is a surface-mount varistor manufactured by AVX Corp/Kyocera Corp. It is specifically designed to safeguard sensitive electronic equipment from voltage spikes that can occur due to electrostatic discharge (ESD), lightning surges, or inductive load switching.

Applications

• Automotive electronics: Protecting automotive control units (ECUs) and other sensitive electronics from voltage transients in the harsh automotive environment.
• Industrial automation: Providing surge protection for industrial control systems, PLCs, and other critical equipment.
• Power supplies: Protecting power supplies from voltage surges and spikes, ensuring reliable operation.
• Telecommunications: Safeguarding telecom equipment from ESD and lightning-induced voltage surges.
• Consumer electronics: Protecting sensitive components in smartphones, tablets, and other portable devices.

Features

• Surface-mount design: Enables efficient and cost-effective assembly onto printed circuit boards.
• High surge current capability: Designed to withstand large surge currents without degradation or failure.
• Fast response time: Clamps transient voltages quickly, minimizing the risk of damage to protected components.
• Low clamping voltage: Limits the voltage across sensitive components to a safe level during surge events.
• RoHS compliant: Meets environmental regulations for lead-free manufacturing.
• Compact size: Suitable for applications with limited board space.

Benefits

• Enhanced equipment reliability: Protects sensitive electronics from damage due to voltage surges, ensuring reliable operation.
• Extended product lifespan: Reduces the risk of failure and extends the lifespan of electronic devices.
• Reduced downtime: Minimizes downtime due to surge-related failures, improving overall system availability.
• Lower warranty costs: Reduces the incidence of warranty claims related to surge damage.
• Simplified design: Easy to integrate into existing circuit designs, providing effective surge protection.

Additional Details

The SD20-1950R9UBM1's key specifications include its voltage rating, surge current capability, and clamping voltage characteristics. It is designed for reflow soldering and is available in tape and reel packaging for automated assembly processes. This varistor offers bidirectional protection, meaning it is effective against both positive and negative voltage transients. Its operating temperature range typically spans from -40°C to +85°C, making it suitable for a wide range of environmental conditions. It's commonly employed in applications where robust surge protection and high reliability are essential.