SMAJ18CA

The SMAJ18CA from FTR is a robust and reliable transient voltage suppressor (TVS) diode designed to protect sensitive electronic components from voltage spikes and transients. This device is particularly useful in applications where overvoltage protection is critical, such as in automotive, telecommunications, and industrial equipment.

Physical Characteristics: The SMAJ18CA is housed in a DO-214AA (SMA) package, which is a surface-mount device (SMD) that is compact and easy to integrate into various circuit designs. The package typically features a cylindrical shape with two leads extending from the bottom, allowing for straightforward soldering onto a printed circuit board (PCB). The body of the diode is usually made from a durable plastic material that provides insulation and protection against environmental factors.

Electrical Specifications:

• Reverse Stand-Off Voltage (V_RWM): The SMAJ18CA has a reverse stand-off voltage of 18 volts, which means it can withstand this voltage level without conducting. This makes it suitable for protecting circuits operating at or below this voltage.
• Clamping Voltage (V_C): When a transient voltage occurs, the clamping voltage is the maximum voltage that the diode will allow to pass through to the protected circuit. The SMAJ18CA typically has a clamping voltage of around 28 volts at a specified peak pulse current.
• Peak Pulse Power (P_PP): The device can handle a peak pulse power of 400 watts, making it capable of absorbing significant energy from voltage spikes without failing.
• Operating Temperature Range: The SMAJ18CA is designed to operate effectively within a wide temperature range, typically from -55°C to +150°C, ensuring reliability in various environmental conditions.

Performance Features: The SMAJ18CA is characterized by its fast response time, which is crucial for protecting sensitive components from rapid voltage transients. It also exhibits low leakage current, which minimizes power loss during normal operation. The device is designed to meet various industry standards, ensuring its reliability and performance in critical applications.

Applications: Common applications for the SMAJ18CA include:

• Protection of automotive electronics from voltage spikes caused by inductive loads.
• Safeguarding telecommunications equipment from lightning strikes and other transient events.
• Shielding industrial control systems from electrical noise and surges.

In summary, the SMAJ18CA from FTR is a highly effective transient voltage suppressor that combines compact design, robust electrical performance, and versatility for a wide range of applications, making it an essential component for ensuring the longevity and reliability of electronic systems.