1SMA8.5CAT3 - Surface Mount Transient Voltage Suppressor

The 1SMA8.5CAT3 from ON Semiconductor is a robust transient voltage suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by system inductive load switching and lightning. This high-quality TVS diode is ideal for the safeguarding of I/O interfaces, VCC bus, and other vulnerable circuits used in a wide range of applications including consumer electronics, automotive, industrial, and telecommunication systems.

Key Features:

• Peak Pulse Power Dissipation: The device is capable of handling 400W of peak pulse power dissipation for an 10/1000μs waveform, ensuring effective protection against voltage spikes.
• Stand-off Voltage: It has a stand-off voltage of 8.5V, which provides a margin of safety for normal operating voltage, preventing the clamping voltage from being reached during regular operation.
• Fast Response Time: The TVS diode offers an exceptionally fast response time to transient events, typically in the picosecond range, providing immediate protection from voltage surges.
• Low Incremental Surge Resistance: The device features a low incremental surge resistance, which helps in reducing the voltage drop across the diode when a surge occurs.
• Bi-directional Clamping: The 1SMA8.5CAT3 is designed to clamp transient voltages in both positive and negative directions, offering versatile protection for various circuit configurations.

Package and Installation:

Encased in a SMA package, the 1SMA8.5CAT3 is constructed for surface mount applications, allowing for efficient assembly and space-saving on printed circuit boards (PCBs). Its compact design and power dissipation capabilities make it a practical choice for modern compact electronics where space is at a premium.

Quality and Reliability:

ON Semiconductor is known for its commitment to quality, and the 1SMA8.5CAT3 is no exception. It is characterized for operation from -55°C to +150°C, making it suitable for use in harsh environments. The device also meets the MSL level 1 standard, per J-STD-020, ensuring reliable operation even after exposure to moisture during soldering processes.

With its robust construction, versatile protection capabilities, and ON Semiconductor's reputation for reliability, the 1SMA8.5CAT3 is an excellent choice for designers looking to enhance the durability and longevity of their electronic products.