SMBJ28A-E3/52

The SMBJ28A-E3/52 is 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: SMB (DO-214AA) package, which is a surface-mount device that provides a compact footprint suitable for various applications.
• Polarity: Unidirectional, meaning it is designed to conduct current in one direction, making it ideal for protecting DC circuits.

Electrical Characteristics:

• Reverse Stand-Off Voltage (V_RWM): 28V, which indicates the maximum voltage that can be applied across the device without causing it to conduct.
• Clamping Voltage (V_C): Typically around 40V at a specified peak pulse current, which is the maximum voltage the device will allow during a transient event.
• Peak Pulse Power (P_PP): 600W, which indicates the maximum power the device can dissipate during a transient event for a specified duration (usually 8/20 µs).
• Peak Pulse Current (I_PP): 30A, the maximum current the device can handle during a transient event without failure.

Thermal and Mechanical Properties:

• Operating Temperature Range: -55°C to +150°C, allowing it to function in a wide range of environmental conditions.
• Storage Temperature Range: -55°C to +150°C, ensuring reliability during storage and handling.
• Junction Capacitance: Typically around 100 pF at 0V, which is important for high-speed applications as it affects the response time of the device.

Applications:

The SMBJ28A-E3/52 is suitable for a variety of applications, including:

• Protection of sensitive electronic components in automotive, telecommunications, and consumer electronics.
• Use in power supply circuits, data lines, and signal lines where voltage transients may occur.
• Ideal for applications requiring low clamping voltage and fast response times.

Compliance and Standards:

• The device is compliant with various industry standards, ensuring its reliability and performance in critical applications.
• It is RoHS compliant, indicating that it is free from hazardous substances, making it environmentally friendly.

Conclusion:

The SMBJ28A-E3/52 from Vishay is a robust and reliable transient voltage suppressor diode, designed to protect electronic circuits from voltage spikes. Its compact SMB package, high power handling capability, and wide operating temperature range make it an excellent choice for a variety of applications requiring transient protection.