SMAJ15A

The SMAJ15A is a specific type of transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. It is designed to protect sensitive electronic components from voltage spikes and transients, which can occur due to various factors such as electrostatic discharge (ESD), lightning strikes, or inductive load switching.

Key Features:

1. Voltage Rating: The SMAJ15A has a breakdown voltage of approximately 15 volts, making it suitable for applications that require clamping at this voltage level. The device is designed to start conducting when the voltage exceeds this threshold, thereby diverting excess energy away from sensitive components.

2. Power Dissipation: The SMAJ15A can handle a peak power dissipation of around 400 watts for a short duration, which allows it to absorb significant energy from transient events without failing.

3. Package Type: The diode is housed in a DO-214AA (SMA) package, which is a surface-mount device (SMD) that is compact and suitable for automated assembly processes. The package dimensions typically measure about 5.2 mm in length and 3.5 mm in width, with a low profile that makes it ideal for space-constrained applications.

4. Temperature Range: The operating temperature range for the SMAJ15A is generally from -55°C to +150°C, allowing it to function reliably in a variety of environmental conditions.

5. Applications: This TVS diode is commonly used in automotive, telecommunications, consumer electronics, and industrial applications. It is particularly effective in protecting circuits in power supplies, data lines, and communication interfaces.

6. Clamping Voltage: The clamping voltage of the SMAJ15A is specified at a certain peak pulse current, which indicates the maximum voltage that will appear across the device during a transient event. This characteristic is crucial for ensuring that the voltage does not exceed the maximum ratings of the components being protected.

7. Low Leakage Current: The device features low leakage current under normal operating conditions, which helps to minimize power loss and improve overall efficiency in electronic circuits.

8. Compliance and Standards: The SMAJ15A typically complies with various industry standards for reliability and performance, making it a trusted choice for engineers and designers.

Summary:

In summary, the SMAJ15A from Littelfuse Inc. is a robust and reliable transient voltage suppressor diode that provides essential protection for electronic circuits against voltage transients. Its combination of a suitable breakdown voltage, high power dissipation capability, compact packaging, and wide operating temperature range makes it an excellent choice for a variety of applications where circuit protection is critical.