Product Overview: SMAJ85CA-TR by STMicroelectronics

The SMAJ85CA-TR from STMicroelectronics is a robust transient voltage suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage spikes and transients. This high-quality component is part of STMicroelectronics' SMAJ series and is housed in a compact SMA (DO-214AC) package, making it suitable for high-density circuit board designs.

Key Features:

• Bi-directional Protection: As a 'CA' type device, the SMAJ85CA-TR is capable of providing bi-directional clamping, which is essential for AC applications or where the polarity of the transient could be either positive or negative.
• Stand-off Voltage: It has a stand-off voltage of 85V, which allows it to remain non-conductive under normal operating conditions until a voltage spike occurs.
• Peak Pulse Power: The device is rated to handle peak pulse power dissipation of 400W (10/1000μs surge), ensuring reliable protection against high energy transients.
• Fast Response Time: The TVS diode provides a fast response time to transient events, typically in the picosecond range, which is crucial for protecting modern fast-switching circuits.
• Low Leakage Current: It has a low leakage current, minimizing power loss when the device is in standby mode, thereby increasing the overall efficiency of the application it protects.
• High Temperature Range: The operating junction temperature range for the SMAJ85CA-TR is from -55°C to +150°C, allowing it to perform reliably in a wide range of environmental conditions.
• Compliance: This product meets the IEC 61000-4-2 standard for Electrostatic Discharge (ESD) immunity, ensuring that it can withstand ESD events without damage.

Applications:

The SMAJ85CA-TR is suitable for a variety of applications where voltage transients can pose a threat to electronic components. These include:

• Consumer electronics such as TVs, computers, and smartphones
• Industrial systems with sensitive microcontrollers or logic circuits
• Telecommunication infrastructure including base stations and networking equipment
• Medical devices requiring reliable protection against voltage transients
• Automotive electronics that are exposed to harsh electrical environments

With its robust protection capabilities and compact form factor, the SMAJ85CA-TR from STMicroelectronics is an excellent choice for designers looking to enhance the durability and longevity of their electronic products.