MSMBJ18CA/TR

Current - Peak Pulse (10/1000µs):	20.5A
Supplier Device Package:	SMBJ (DO-214AA)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	Military, MIL-PRF-19500
Voltage - Clamping (Max) @ Ipp:	29.2V
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active

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TVS - Diodes

TVS (transient voltage suppressors) diodes are one of the most important electronic components in the field of power control systems. A TVS diode is an active component that acts as a voltage excitation device. It is designed to rapidly and safely dissipate excess voltage from an electrical system due to a brief overload or electrical fault. When exposed to a large voltage pulse, a TVS diode will quickly reduce it to a safe voltage level that is below a predetermined value.TVS diodes offer protection from high-voltage surges, over voltage spikes, and electrical interference. This is usually done by clamping the voltage and dissipating the excess current through the device. TVS diodes offer protection from transient voltage transients, such as lightning strikes, over-voltage spikes, and ESD (electrostatic discharge). TVS diodes can also protect against lower frequency spikes caused by inductive load switching and motor drive transients.The MSMBJ18CA/TR provides dual low-capacitance, low-clamping voltage protection for devices. This type of diode is designed to protect sensitive electronic components from voltage transients. It is a small, surface-mount Silicon avalanche diode with a maximum peak pulse power of 450 watts and a peak non-repetitive current of 400 amperes. This protects the device against transients with a low-clamping voltage and a capacitance of 8pF per device.The working principle of the MSMBJ18CA/TR is simple. It is connected between the supply voltage and the load, and when a transient voltage exceeds its threshold voltage, it begins to conduct current and absorb the energy of the transient. The energy is then dissipated through the junction in the form of heat. The clamping voltage of the device is determined by its capacitance, and the higher the capacitance is, the lower the threshold voltage.When the transient is of a lower frequency, the MSMBJ18CA/TR absorbs the energy and dissipates it over a shorter time to protect the device against the transient. The low capacitance also helps to reduce EMI (electromagnetic interference). This type of diode is particularly useful in applications where the electrical fault requires high-speed response, such as a fault in an automotive circuit.The MSMBJ18CA/TR is also designed to reduce the power dissipation in the system. This happens when the diode is subjected to a voltage spike, as it then absorbs the energy associated with the spike and dissipates it as heat. This reduces the amount of energy that needs to be supplied to the system, thus improving energy efficiency. The reduced power dissipation also lowers the stress on the power components, thus increasing the reliability of the system.In conclusion, the MSMBJ18CA/TR is a high-performance TVS diode that is designed to protect sensitive electronic components from voltage transients. It is a low-profile, surface-mount Silicon avalanche diode with a low-clamping voltage and high-peak pulse power. It is highly reliable and offers superior protection against transient voltages, EMI, and lower frequency transients.

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