SMDJ40CA-HRAT7

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-HRA
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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TVS (Transient Voltage Suppressor) diodes allow designers to protect circuits from the electrical damage caused by transients and other forms of voltage spikes. This type of device prevents damage to sensitive components and systems by acting as a high-speed short circuit. While these devices are generally self-regulating, they require an input voltage of some type to function properly.The SMDJ40CA-HRAT7 is a unidirectional Transient Voltage Suppressor (TVS) diode designed to protect sensitive components and systems from unwanted overvoltage transients. It is a glass-passivated, bidirectional, symmetrical, avalanche-rated device that provides superior protection against even the harshest transient conditions. The diode uses a high-temperature-resistant moulded case to ensure excellent thermal dissipation.The SMDJ40CA-HRAT7 is designed to provide absolute protection when subjected to transient voltage surges of either polarity. It can operate at peak power levels up to 5 watts at 125°C, and is characterized for operation over a wide range of temperatures from -55°C to + 150°C. It can handle repetitive peak surge currents up to 1200 A. The diode is capable of providing very low clamping voltages and low dynamic resistance, allowing it to effectively protect sensitive components and circuitry from damage caused by electrical transients. The working principle of the SMDJ40CA-HRAT7 is based on its unique structure. When a transient voltage appears on one of its terminals, the voltage drop across the diode’s structure increases, and the device goes into its avalanche mode. During this time, the current flowing through the device can increase rapidly, leading to a clamping of the voltage at its terminals. This effectively prevents any further increase in voltage and thus protects against overvoltage transients.The SMDJ40CA-HRAT7 application field includes a variety of applications, including ac power lines, communication lines, consumer electronics, automotive systems, industrial equipment, and medical equipment. It can be used as an overvoltage protection device in all types of applications where transient protection is required. It is especially suitable for audio/video and telecom equipment, and is also commonly used for the protection of circuits in high-frequency circuits.The SMDJ40CA-HRAT7 is a reliable, cost-effective solution to protecting circuits from overvoltage transients. Its unidirectional structure, high peak power capability, and low dynamic resistance make it suitable for a wide range of applications. Furthermore, its ability to handle repetitive peak surge current makes it a dependable device when it comes to protecting sensitive components and circuitry from electrical transients.In conclusion, the SMDJ40CA-HRAT7 is a high-performance, reliable transient voltage suppressor (TVS) diode designed to protect components and systems from unwanted transients and other forms of voltage surges. Its operating principle, application field, and performance characteristics make it an ideal choice for a variety of overvoltage protection applications.

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