TP1.5KE27CA

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TVS - Diodes

A transient voltage suppressor (TVS) or transient voltage suppressor diode is a device designed to protect circuit components from voltage spikes or high energy transients. TVS diodes offer a higher level of protection than other traditional surge-protective solutions such as gas discharge tubes (GDTs) and varistors. This is because they can effectively clamp large voltage transients, thus dissipating a higher surge energy. The term TVS diode is typically used to refer to grain oriented junction diodes (GFT) or breakover diodes.

The TP1.5KE27CA is a unidirectional TVS diode intended to protect sensitive and precision VLSI’s from high voltage transients in the range of 25V–27V. This device is designed with avalanche and SBD (silicon-controlled rectifier) capabilities. It is offered in an ultra-small SOT-23-5 package, allowing the device to be used in a variety of different applications, including automotive, communication, medical, and industrial.

Application Field

The TP1.5KE27CA diode can be used in a variety of applications, including automotive, communication, medical, and industrial. In automobiles, this device can be used to protect sensitive electronics from voltage spikes caused by the starter, alternator, and other electrical loads. In communication, it can be used for electrical protection for USB data ports, as well as for circuit protection of mobile phone signal lines. In medical implants and devices, the TP1.5KE27CA can protect against voltage distortion caused by EMI and RFI sources. In industrial applications, the device can provide protection against over voltage transients for servo drives, control systems and process control systems.

Working Principle

The TP1.5KE27CA works by clamping transient voltage across a devices terminals when the voltage spike exceeds its rated breakdown voltage. The current flow through the device when the voltage breaks down will depend on the breakdown voltage of the device. The voltage regulation will depend on the design of the device, its current rating, capacitance, and pulse width. When the device is exposed to a high voltage transient, the device will respond by turning on and limiting the voltage across the terminals to the clamping voltage. This will protect the device from the voltages above the specified clamping voltage.

The working principle of the TP1.5KE27CA device is based on the avalanche and SBD principles. When the voltage across the device increases, it goes into a high-current region, triggering the avalanche breakdown. This will cause the SBD region to turn on, further limiting the voltage and current across the device. The device is designed to be able to handle current pulses up to 70A and can clamp relatively high voltages in the range of 27V.

Overall, the TP1.5KE27CA is a versatile, reliable, and cost-effective TVS diode intended for use in a variety of applications. It is capable of handling large voltage transients, offering high performance protection for sensitive devices.

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