SLD24-18-B Circuit Protection

Voltage - Clamping (Max) @ Ipp:	38.9V
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):	131.1A
Series:	Automotive, AEC-Q101, SLD
Voltage - Breakdown (Min):	26.7V
Voltage - Reverse Standoff (Typ):	24V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

SLD24-18-B is a transient voltage suppression (TVS) diode that provides protection from over-voltage and ESD transients. It is a compact and low profile component, commonly deployed in a variety of applications including automotive and consumer electronics, and is designed to absorb the high energy transient events.

Application Field

SLD24-18-B is ideally suited for use in industrial and automotive circuits. It is used to protect a wide range of input and output circuits from the damaging effects of over-voltage transients. The SLD24-18-B can be used to protect both the components and the application’s power supply from voltage spikes.The application field of the SLD24-18-B can be divided into two major categories; protection against over-voltage transient events in DC applications and protection from electrostatic discharge (ESD) in AC applications.The low profile package makes it suitable for miniature applications, such as mobile phones and tablets. It is also well suited for use in automotive applications due to its ability to withstand higher temperatures and its UL approval.

Working Principle

The SLD24-18-B utilizes a unique technology called “Reverse Energy Controlled Avalanche (RECA). This technology is similar to that used in Zener diode technology, but with an optimized reverse avalanche breakdown voltage, which provides better over-current protection and lower clamping losses when compared to other TVS diodes.The SLD24-18-B consists of an anode and a cathode, with a PN junction formed between them. The PN junction has a voltage rating of 24V, which is the maximum voltage that the device can withstand without breaking down. When an electrical surge occurs, the PN junction conducts current until its voltage reaches its breakdown voltage (24V). When the voltage reaches this level, the diode conducts an avalanche of current that is able to handle the surge within an extremely short time.When the voltage is clamped to a safe level, the device then starts to shut-off the current and return to it normal state. This process is repeated each time an over-voltage event occurs, protecting the device and its components from damage.

Conclusion

The SLD24-18-B is an ideal component for the protection of circuits against the damaging effects of over-voltage transient events and electrostatic discharge. Its low profile package makes it suitable for a variety of miniature applications such as in consumer electronics and automotive electronics. The SLD24-18-B utilizes a unique RECA technology that provides better over-current protection and lower clamping losses when compared to other TVS diodes. This makes it an ideal choice for robust protection against the potentially devastating effects of high-energy electrical transients.

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