MAP5KE14AE3

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Transient Voltage Suppressors (TVS) are designed to protect electronic components from voltage transients or ‘spikes’, which can cause latent damage to sensitive devices. The MAP5KE14AE3 is a low-capacitance, high surge-energy pulse protection device from the STMicroelectronics range of TVS diodes. In this article, we will discuss the application field of the MAP5KE14AE3 and its working principle.

The MAP5KE14AE3 is designed to protect sensitive electronic devices from electrostatic discharges (ESD), as well as from over-voltage transients caused by lightning, cable discharges, or other events. It is suitable for use in communications, automotive, industrial, computing, home theatre and medical applications. The device is particularly suitable for telecommunication systems and high-speed data networks, because it is designed to protect against the repetitive ESD levels generated by RJ45 connectors.

In terms of its technical characteristics, the MAP5KE14AE3 has an ultra-low capacitance of 1.2 pF and offers a peak pulse power of 3950 W at 8/20 μs waveform; this is equivalent to an energy rating of 89 W at 10/1000 μs. It is available in an SOT-23 package and can operate in the temperature range of – 40 °C to +85 °C. The device has a V(BR) of 5.5 V and a minimum standoff of 4 V.

The MAP5KE14AE3 is a unidirectional device, which is designed to protect from high voltage transients from Source-Ground. It works on the principle of avalanche breakdown when exposed to a certain critical voltage, the device’s junction breaks down and a large current passes through the junction. This current has a powerful clamping action, which forces the voltage to remain at a certain level.

When the transient voltage reaches a certain trigger voltage (V(BR)), the MAP5KE14AE3 turns on and begins to conduct. This forces the voltage across the device to remain at or below its V(BR) breakdown voltage. The device will remain in a state of conduction until the transient voltage has subsided, allowing it to return to its normal state and greatly reduce the risk of further damage from the transient voltage.

In summary, the MAP5KE14AE3 is a low-capacitance, high surge-energy pulse protection device from STMicroelectronics. It is designed to protect electronic components from voltage transients or ‘spikes’, and is suitable for a range of communication, automotive, industrial, medical and other applications. It relies on the principle of avalanche breakdown to provide protection, and it quickly returns to its normal state when the transient voltage has subsided.

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