NUP2105LT1G: Overview, Features, and Applications


The NUP2105LT1G is a specific part number of a Transient Voltage Suppressor (TVS) diode manufactured by ON Semiconductor. Here's an overview of its features and common applications:

Overview: The NUP2105LT1G is a TVS diode designed to offer robust protection against voltage transients and electrostatic discharge (ESD) events. It provides a low-clamping voltage and fast response time to safeguard sensitive components from overvoltage damage.



  1. TVS Diode: It is specifically designed as a TVS diode, which means it can absorb and dissipate transient voltage spikes effectively.

  2. Low Clamping Voltage: The NUP2105LT1G exhibits a low clamping voltage, which ensures that voltage surges above a designated threshold are limited, offering protection to downstream components.

  3. Low Leakage Current: The diode has a low leakage current, ensuring minimal power dissipation under normal operating conditions.

  4. Compact Package: The diode is available in a small and surface-mountable SOD-523 package, ideal for compact circuit designs with limited space.

  5. ESD Protection: Apart from surge protection, the NUP2105LT1G also provides robust electrostatic discharge (ESD) protection to prevent damage caused by static electricity.

Applications: The NUP2105LT1G TVS diode can be utilized in various electronic circuits and systems for protection against voltage transients and ESD events. Some common applications include:

  1. Consumer Electronics: It can be employed in consumer electronic devices such as smartphones, tablets, laptops, and gaming consoles to protect sensitive components (like ICs) from voltage spikes and electrostatic discharge.

  2. Communication Systems: The diode can be used in telecommunication equipment, networking devices, and data communication systems to safeguard against transient voltage events caused by lighting strikes or other power surges.

  3. Industrial Control Systems: It finds application in industrial control systems and embedded electronics, protecting sensitive components from voltage surges occurring due to electromagnetic interference (EMI) or electrical noise in the environment.

  4. Automotive Electronics: The NUP2105LT1G can be utilized in automotive electronic systems to provide overvoltage protection, especially in circuits exposed to voltage spikes generated during load dumping, reverse battery connections, or other transient events.

  5. Power Supplies: It can be incorporated into power supply circuits to protect downstream components, such as ICs and integrated power management circuits, from voltage transients and ESD events.


The specific implementation and usage of the NUP2105LT1G diode will depend on the application requirements and the nature of the electrical environment. It is important to refer to the manufacturer's datasheet and application guidelines for detailed specifications and usage recommendations.