MSMLJ40CA

Voltage - Clamping (Max) @ Ipp:	64.5V
Supplier Device Package:	DO-214AB
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Current - Peak Pulse (10/1000µs):	46.4A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	44.4V
Voltage - Reverse Standoff (Typ):	40V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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The MSMLJ40CA is a high-power TVS diode available in the surface mount package and designed to protect sensitive electronic projects from overvoltage and transients in a variety of operating environments. It is part of a wide selection of surge protection devices (SPDs) available from Littelfuse and other suppliers.The MSMLJ40CA is designed to operate as a voltage interception and clamp device for overvoltage and transient protection of mono- and combined-polarity designs. It is “unidirectional”, meaning that is will only conduct current in a single direction, making it suitable for use in applications with connected positive and negative conductors.The MSMLJ40CA diode is well suited for a wide range of power, computer data and communication line applications. With package code suffix A, it has a lower breakdown voltage of 38 Volts, compared to the 43 Volts single (VSO) for other parts in the family. It has a power rating of 250 Watts, a current rating of 6 Amperes and a clamping voltage of 58 Volts.In operation, the device will limit voltage transients by subjecting the circuit to high surge currents. The device protects products from overvoltages and transients up to and including a surge level of 8/20 μs.The MSMLJ40CA diode is available in both axial and surface mount packages with a wide selection of insulation coatings. The device’s efficiency is further improved by its low clamping voltage and greater height of the clamping range. This allows it to be used in a wide range of applications, from consumer electronic devices to automotive components, such as ABS systems, DC-DC converters and telecommunication modules.The MSMLJ40CA has a number of other features to ensure reliable operation. It has a low power dissipation and reverse leakage capability. It is EMC Compliant and is protected from electrostatic discharge (ESD) and surge environmental effects.The working principle of a TVS diode relies on its breakdown voltage. When a voltage greater than this value is applied, the device limits the voltage surge and current by quickly shifting the voltage across it from a negative to a positive polarity. This voltage shift causes the voltage to steeply increase as the rating of the diode is exceeded. The current will then follow the voltage as it decreases.The TVS diode is used in a variety of applications, including circuit and data line protection, automotive and consumer electronics applications, as well as surge protectors for medical and industrial equipment. It is also used in applications that use sensitive components, as it prevents issues with overvoltage and transients that may cause data errors or damage to the equipment.In conclusion, the MSMLJ40CA TVS diode is an effective device for providing overvoltage and transient protection for a wide range of applications. It can provide protection up to 8/20 μs and is available in both axial and surface mount packages. With its low clamping voltage and high power dissipation, it is well-suited for a variety of power, computer data and communication line applications.

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