The WE-TVSP Power TVS Diode SMAJ30CA by Wurth Elektronik is a transient voltage suppressor (TVS) diode designed to protect electronic circuits from voltage spikes and surges. This bidirectional diode offers a DC operating voltage of 30V and a clamping voltage of 48.4V, providing effective surge protection in both directions. With a peak pulse current rating of 8.3A, it can handle significant surge events without damage. The diode is encapsulated in a DO-214AC package, ensuring robustness and reliability in various applications.
Key features include a low leakage current of 1µA max, ensuring minimal power loss in standby mode, and a high peak pulse power dissipation capability of 400W (for 10/1000 µs pulse), accommodating high-energy transients. Its operating temperature range of -65°C to +150°C makes it suitable for use in a wide range of environmental conditions. The diode's bidirectional nature makes it versatile for protecting circuits against reverse polarity surges.
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Transient Voltage Suppressor (TVS) diodes are semiconductor devices designed to protect electronic circuits from voltage spikes and surges. These components work by clamping transient overvoltages to a safe level, preventing damage to sensitive circuitry. TVS diodes are characterized by their response time, energy absorption capability, and breakdown voltage, which are crucial factors in selecting the right diode for a specific application.
When choosing a TVS diode, engineers should consider the maximum operating voltage of the circuit, the specific transient threats (such as ESD, lightning, or inductive switching), and the required response time. The diode's clamping voltage should be just above the maximum operating voltage to ensure protection without affecting normal operation. Additionally, the peak pulse current rating of the diode must be sufficient to handle the expected surge currents.
TVS diodes are used in a wide range of applications, including power supply circuits, data lines, and I/O interfaces, where they provide effective protection against voltage transients. Their compact size, fast response time, and high surge capability make them an essential component in protecting electronic devices from voltage-induced damage.
Overall, the selection of a TVS diode involves balancing the need for surge protection with the operational parameters of the circuit. Engineers must carefully evaluate the electrical characteristics of the diode against the specific requirements of their application to ensure optimal protection.