SMDJ40CA

Voltage - Clamping (Max) @ Ipp:	64.5V
Supplier Device Package:	DO-214AB (SMCJ)
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):	46.5A
Series:	SMDJ
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:	Tape & Reel (TR)

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SMDJ40CA is a miniature unidirectional and bidirectional transient voltage suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other energy-related phenomena. The diode is especially suitable for preventing electrostatic discharge (ESD) damage. The SMDJ40CA is a voltage-regulated device that can withstand surge currents as high as 40A.The SMDJ40CA technology is based on avalanche breakdown process in which an electric current is passed through a junction of two dissimilar semiconductor materials resulting in the avalanche breakdown or “zener breakdown” of the semiconductor junction. This electric current is usually referred to as the “zener current” and is affected by the temperature of the junction. The zener voltage of the SMDJ40CA diode is also affected by the temperature.The SMDJ40CA diode is designed for use in a wide variety of applications, such as automotive, avionics, telecommunications, and computer and cable television industries. In these applications, the device is used to protect sensitive electronic components from transient voltages and electrical overstress. The diode is capable of withstanding up to 40A of surge current and is available in various voltage ratings. The SMDJ40CA is available in both unidirectional and bidirectional configurations. The unidirectional device is designed specifically for situations where the electrical current can only flow in one direction. This diode is typically used to safeguard components from voltage transients that travel in the same direction. The bidirectional device is used when the electrical current is able to flow in both directions, which is common in applications where multiple power sources are connected. The working principle of the SMDJ40CA diode is based on the previously mentioned “zener breakdown” process. The device is designed to absorb excessive electrical energy and convert it into heat, which ultimately protects the protected circuits from damage. As the voltage transients increase, the SMDJ40CA diode begins to conduct, thus absorbing the electrical current and protecting the circuit from damage. The SMDJ40CA diode has a variety of advantages over competing devices, such as lower clamping voltages, higher surge current ratings, better ESD protection, and improved thermal performance. Furthermore, the diode is relatively easy to use and install, providing a cost-effective solution for transient voltage protection. Overall, the SMDJ40CA is a reliable and efficient transient voltage suppressor (TVS) diode designed to protect sensitive electronic components from voltage transients and electrical overstress. The device is ideal for a wide range of applications, including automotive, avionics, telecommunications, and computer and cable television industries. Thanks to its robust design, the SMDJ40CA is capable of withstanding a surge current of up to 40A. Moreover, the diode is relatively easy to use and install, offering a cost-effective solution for voltage transient protection.

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