SMAJ40CA-E3/61

The SMAJ40CA-E3/61 is a specific model of a transient voltage suppressor (TVS) diode manufactured by Vishay, designed to protect sensitive electronic components from voltage spikes and transients. Here’s a detailed description of its features and specifications:

General Description:

• Type: Transient Voltage Suppressor (TVS) Diode
• Package: SMA (Surface Mount) package, which is compact and suitable for surface mount technology (SMT) applications.
• Configuration: Bidirectional, allowing it to clamp voltage spikes in both positive and negative directions.

Electrical Characteristics:

• Reverse Stand-Off Voltage (V_RWM): The SMAJ40CA-E3/61 has a reverse stand-off voltage of 40V, meaning it can withstand this voltage without conducting.
• Clamping Voltage (V_C): When a transient occurs, the clamping voltage is typically around 60V, which is the maximum voltage the device will allow before it starts to conduct heavily and protect the load.
• Peak Power Dissipation: The device can handle a peak power dissipation of 600W for a very short duration (typically 8/20 µs pulse), making it suitable for protecting against high-energy transients.
• Operating Temperature Range: The diode operates effectively within a temperature range of -55°C to +150°C, ensuring reliability in various environmental conditions.

Mechanical Characteristics:

• Dimensions: The SMA package typically measures approximately 5.2 mm x 3.5 mm x 1.5 mm, making it compact and suitable for high-density circuit boards.
• Weight: The device is lightweight, which is advantageous for portable and space-constrained applications.

Applications:

• Protection: Ideal for protecting sensitive electronic components in automotive, telecommunications, consumer electronics, and industrial applications from ESD (Electrostatic Discharge) and other voltage transients.
• Circuit Design: Commonly used in power supply circuits, data lines, and signal lines where voltage spikes can occur.

Compliance and Standards:

• RoHS Compliant: The SMAJ40CA-E3/61 is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring it is free from certain hazardous materials.
• AEC-Q101 Qualified: This qualification indicates that the device meets automotive industry standards for reliability and performance.

Conclusion:

The SMAJ40CA-E3/61 from Vishay is a robust and reliable transient voltage suppressor diode, designed to provide effective protection against voltage transients in a variety of electronic applications. Its compact size, high power handling capability, and wide operating temperature range make it an excellent choice for engineers looking to enhance the reliability of their designs.