30KPA180A Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are a type of device used to protect electrical or electronic equipment from hazardous voltage spikes.The 30KPA180A belongs to the family of JDR Teejay ultra short body series. This particular device is designed to protect cables, line cards, and circuitry from over-voltage transients such as electrostatic discharge, power cross, lightning and induced voltages. TVS diodes are available in several types, including unidirectional, bidirectional, symmetrical, and low capacitance.

Application Field

The 30KPA180A is an ultra low capacitance, low profile, low power bidirectional protection device.Its application field includes protection for network lines, interrupt control modules, LAN cards, USB interface 2.7-5.5V, data lines, USB 3.0 interface, as well as CAN-Bus.It is suitable for rugged, high-reliability automotive, avionic, and military applications. The device features an over-voltage protection of up to 60V RV at 8/20us. It provides ESD protection up to 30KV HBM contact discharge 12KV air discharge.

Working Principle

The 30KPA180A works by clamping potentially harmful voltages to safer, more manageable levels. It uses a system whereby a large current is allowed to jump from anode to cathode, diverting the excess voltage and dissipating it as heat. In the event of an over-voltage transient, the device will activate and quickly clamp the excessive charge, reducing it to a safe level, and allowing the protected circuitry to continue functioning as per normal state. This safe level is known as the clamping voltage and allows current to continue to flow, without damaging any sensitive components.

The 30KPA180A is a discrete component, containing no active elements such as transistors. This gives it several advantages over active-type over-voltage protection devices. Firstly, it is a rugged and reliable device, with no active components to malfunction or degrade over time. Additionally, it is more compact and requires no additional power supply for it to work. Lastly, it is up to 60% cheaper than comparable active protection devices.

Safety Considerations

Due to the high voltages present in TVS devices, it is important to use correct safety protective measures. When working with any TVS device, it is important to use insulated tools and wear protective clothing. Furthermore, it is essential to observe the correct installation and orientation of the device and respect the rated power values.

The 30KPA180A device provides reliable and efficient protection against high-voltage transients. Its small size, low power consumption, and low capacitance make it an ideal choice for a wide range of applications. Moreover, its rugged construction guarantees long-term reliability and cost-effectiveness. Used according to the manufacturer’s instructions, the 30KPA180A can help protect sensitive electronic components and circuitry from dangerous over-voltage transients.

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