SMAJ30A-E3/61

The SMAJ30A-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 (DO-214AC) package, which is a surface-mount device (SMD) that allows for easy integration into various circuit designs.
• Polarity: Unidirectional, meaning it is designed to conduct current in one direction, providing protection against positive voltage transients.

Electrical Characteristics:

• Reverse Stand-Off Voltage (V_RWM): The SMAJ30A-E3/61 has a reverse stand-off voltage of 30V, which is the maximum voltage that can be applied across the device without causing it to conduct.
• Clamping Voltage (V_C): When a transient occurs, the clamping voltage is the maximum voltage that the diode will allow to pass through. For this model, the clamping voltage is typically around 45V at a specified peak pulse current.
• Peak Pulse Power (P_PP): The device can handle a peak pulse power of 400W (for a 10/1000 µs waveform), making it suitable for protecting against high-energy transients.
• Peak Pulse Current (I_PP): The maximum peak pulse current that the diode can withstand is 30A, which is crucial for ensuring that it can handle significant surges without failure.

Thermal Characteristics:

• Operating Temperature Range: The SMAJ30A-E3/61 operates effectively within a temperature range of -55°C to +150°C, making it suitable for various environmental conditions.
• Junction Capacitance: The junction capacitance is typically low, which helps maintain signal integrity in high-speed applications.

Applications:

• The SMAJ30A-E3/61 is commonly used in applications such as:
  • Protection of sensitive electronic components in automotive, telecommunications, and industrial equipment.
  • ESD (Electrostatic Discharge) protection for data lines and power lines.
  • Circuit protection in consumer electronics, including smartphones and tablets.

Compliance and Standards:

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

Conclusion:

The SMAJ30A-E3/61 from Vishay is a robust and reliable transient voltage suppressor diode, ideal for protecting electronic circuits from voltage spikes and transients. Its combination of high peak pulse power, low clamping voltage, and wide operating temperature range makes it a versatile choice for a variety of applications in modern electronic designs.