SLD40U-017

Voltage - Clamping (Max) @ Ipp:	64.5V
Supplier Device Package:	P600
Package / Case:	P600, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	5000W (5kW)
Current - Peak Pulse (10/1000µs):	79.1A
Series:	Automotive, AEC-Q101, SLD
Voltage - Breakdown (Min):	44.4V
Voltage - Reverse Standoff (Typ):	40V
Unidirectional 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 - Diodes

The SLD40U-017 is an example of a Transient Voltage Suppression (TVS) diode used to protect electrical and electronic devices from transient overvoltage. This device can also be used to preemptively protect circuits from disturbances caused by lightning and other electrical disturbances whose magnitude is higher than the normal operating conditions. By knowing the working parameters and so on, the SLD40U-017 can be used in various applications where the protection of the device is paramount. This article will explore the applications of the device as well as the principle of operations.

Applications

The SLD40U-017 is a unidirectional TVS diode, meaning it only conducts current in a single direction, which makes it suitable for DC input circuits. It can also be used in communications equipment, as it has a low clamping voltage, meaning it can perform very fast voltage suppression without disturbing the circuit\'s communication signals. It is able to achieve this low clamping voltage by incorporating avalanche breakdown features with its internal structure. Furthermore, the SLD40U-017\'s small size allows it to be used in miniaturized circuitry. The device has a low holding current, and is robust against high surge currents. This feature makes it suitable for protecting against large disturbances, such as those caused by lightning or other extreme environmental conditions.

Working Principle

The SLD40U-017 utilizes the diode\'s current-limiting principles to protect the circuit. If the voltage exceeds its peak power rating, it activates its avalanche breakdown feature, becoming an open diode. As a result, the circuit is no longer able to potentially overcharge due to the lack of conductance. As soon as the overvoltage condition subsides, the diode returns to its stable voltage-resistant state, allowing normal operation to resume. The SLD40U-017\'s avalanche breakdown technology is ideal for the protection of sensitive electrical systems such as communications networks and personal computers. This is because the internal structure of the diode is able to respond quickly to fast-changing voltages. By responding quickly, this feature helps to protect the circuit from being damaged. The device also has a high surge current rating, meaning it can provide protection against large, sudden disturbances without overriding other circuit parameters.

Conclusion

The SLD40U-017 is a unidirectional TVS diode used to protect electrical and electronic devices from transient overvoltage. It is ideal for use in DC input circuits, as well as miniaturized circuitry. The diode has a low clamping voltage and low holding current, making it suitable for protecting against large disturbances. The internal structure of the device incorporates an avalanche breakdown feature, allowing it to respond quickly to fast-changing voltages. By utilizing the principles of current-limiting and avalanche breakdown, the SLD40U-017 is able to provide reliable protection against overvoltage conditions.

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