SMBJ48A-M3/52

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In the realm of electronic circuitry, nothing provides more protection against voltage spikes than TVS - Diodes, and few diodes offer better protection than the SMBJ48A-M3/52. A hardy, dependable component, the SMBJ48A-M3/52 is well-suited for a variety of applications, and its working principle is fairly straightforward.

Application Field

Typical applications of the SMBJ48A-M3/52 include protection against over-voltage and over-current, with peak power handling values of 1500 watts for the 48V-M3 and 1000 Watt for the 52V model. It can also be used as a surge protector in automotive and motor applications as well as for general industrial purposes. Compatibility with a broad range of temperatures from -55 degree Celsius to 175 degree Celsius makes the SMBJ48A-M3/52 an ideal choice for harsh environments with extreme heat or cold.

Additionally, the SMBJ48A-M3/52 is often used in sets of multiple diodes, such as Reflow protectors and SMPS circuits. This allows them to be used both as over-voltage and over-current protection devices, as the voltage spikes are then divided amongst the diodes instead of hitting a single one.

Working Principle

The SMBJ48A-M3/52 is a type of bidirectional silicon transient voltage suppressor diode. This means that it clamps the voltage of a circuit when it passes a critical point, preventing further damage to the circuit. The diode consists of an anode provieding current flow and a cathode to sink the current back to a ground connection. When a voltage spike or surge occurs, the diode conducts current in an attempt to equalized the voltage on both sides of the diode clamping the circuits voltage to a safe level.

Although the SMBJ48A-M3/52 is primarily a dependable over-voltage protector, its protection capabilities extend far beyond voltage spikes, safeguarding against over-current and even electro-magnetic interference (EMI) that may originate from outside sources. This makes the SMBJ48A-M3/52 a valuable addition to any circuit protection suite.

Conclusion

The SMBJ48A-M3/52 is an invaluable asset, defending electronic circuitry from spikes and surges of both voltage and current. As a result, it finds a home in industries requiring voltage protection from -55 to 175 degrees Celsius, most notably automotive and other motor industries. Most importantly, the SMBJ48A-M3/52 clamps voltage when it passes a critical point, preventing further damage to the circuit.

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