BSPD400240D2P

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TVS (Transient Voltage Suppression) is a type of electronic component with a special design to protect sensitive devices from voltage or current variations. The BSPD400240D2P is a type of Mixed Technology TVS diode, designed by Bourns Inc. to secure devices from transient voltage activity.

Application of BSPD400240D2P

This TVS diode is used in systems where overvoltage and high-level surges need to be controlled or suppressed. The BSPD400240D2P is great for multi-line protection as it combines the fast response of unidirectional bidirectional devices with the high power capabilities of polysilicon technology. This allows for both low stand-off voltages and low clamping voltages. Additionally, the multi-line protection also enhances overall system reliability in automotive, computer and consumer applications.

This diode is designed to provide over-voltage and over-current protection in automotive applications as well as advanced technological systems such as: monitors, CCTV systems, TVs, Li-ion battery charging, portable electronics, and medical systems. Its reverse standoff voltage (RO) is 400V and its breakdown voltage (BR) is 240V.

Working Principle

The BSPD400240D2P is a Mixed Technology TVS diode, that combines two technologies to provide over-voltage and over-current protection. This TVS diode is a combination of avalanche breakdown and Zener breakdown. The avalanche breakdown is a self-commutated switch mechanism, where the flow of electric current increases exponentially with increased voltage. This creates an almost linear transformation from the breakdown voltage to the clamp voltage. The Zener breakdown occurs when the reverse breakdown voltage exceeds a certain threshold known as the Zener voltage.

When there is an over-voltage, current is diverted from the primary path of the device and is routed to ground to protect the system in question. This is done through a current flow that is created between the terminals of the diode. The diode will then clamp the voltage to a level that is below the breakdown voltage, and the current-flow will remain until the situation is resolved.

The BSPD400240D2P has a peak pulse current rating of 530A and 700A (10x1000μs waveform) peak power, making it suitable for most applications. The operating temperature range for this diode is -55°C to +125°C. It also comes in an RoHS compliant SMC package (MS-012) that complies with environmental protection regulations.

Conclusion

The BSPD400240D2P is a Mixed Technology TVS diode that has many advantages for many different applications. Its combination of avalanche and Zener breakdown provides a high level of protection against over-voltage and over-current surges. It is designed to work in temperatures ranging from -55°C to +125°C and is ROHS compliant, ensuring environmental protection. Its peak pulse current rating of 530A and 700A peak power make it suitable for most applications.

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