MX1.5KE39A Circuit Protection

Transient Voltage Suppressors (TVSs) were designed to protect electronic components from voltage spikes, usually caused by electrostatic discharge (ESD), electrical fast transients (EFT) or lightning. TVS devices may be employed on equipment to prevent damage due to lightning strikes, power supply disturbances, or voltage glitches from other sources. MX1.5KE39A is one of the popular TVS – Diodes in market.

The MX1.5KE39A is designed to protect voltage sensitive components from electrical over-stress (EOS) caused by inductive loads such as a relay, solenoid, motor, or transformer. The device is in an SMA package and provides fast over-voltage protection. It is rated for a peak impulse current of 1.5kA. The operating voltage range is from 5.5V to 39V.

It is primarily used for automotive applications due to its wide operating range and integrated EMC and ESD protection. The device can be used to protect against ESD strikes up to the IEC61000-4-2 standard\'s maximum levels and to protect the system from high voltage EMI pulses. The TVS diode has a reverse breakdown voltage of 5.5V.

The MX1.5KE39A operates by providing a low impedance path for energy spikes. The device works by clamping the voltage below its breakdown voltage, limiting the amount of current that can flow and protecting the device from damage. The device also provides ESD protection by allowing the opposite polarity of the voltage spike to be clamped before it reaches its breakdown voltage. The device is designed for unidirectional and bidirectional operations.

The device is designed with a built-in zener diode which helps to ensure extremely low voltage drop. The device has a maximum of 1.5kA peak impulse current, making it suitable for use in automotive, consumer, telecom, and industrial applications. The low thermal resistance and low leakage current characteristics of the device also make it suitable for high temperature applications.

The device is constructed with a silicone-gel filled encapsulant to enable a fast response and a low clamping voltage. The clamp voltage remains stable over temperature and operating conditions. The device is RoHS compliant and is designed to meet AECQ-200 qualification for automotive systems.

In conclusion, the MX1.5KE39A is a popular TVS – Diode used in automotive, consumer, telecom, and industrial applications for providing over-voltage protection from electrical over-stress. The device works by providing a low impedance path for energy spikes with a maximum peak impulse current of 1.5kA and low zener diode voltage drop. It is designed with a silicone-gel filled encapsulant and is RoHS compliant.