BZM55B3V3-TR

Diodes - Zener - Single

The BZM55B3V3-TR is a single zener diode offering high stability and exceptional reliability. It can help protect circuits against voltage transients and power surges, provide power supply voltage regulation and voltage-reference functions, and work as an over-voltage protection component in power supply system applications.

Application Field

The BZM55B3V3-TR can be used in a wide range of electronic and electrical applications, such as in:

• Consumer electronics
• Computer systems and peripherals
• DC-DC converters
• Home appliances
• Industrial instrumentation and controls
• Automotive electronics
• Telecommunications
• Power management systems

The device can provide excellent protection to power supplies and other circuits against voltage transients and power surges, offer superior high-reliability voltage-regulation and reference capabilities, and provide over-voltage protection in power supply system applications.

Working Principle

The operation of the BZM55B3V3-TR is based on zener breakdown, the effect that causes the diode to become increasingly conductive as the voltage reaches its Zener Voltage (Vz) rating. As the voltage rises to its Zener Voltage, electron-hole pairs are created by quantum-mechanical tunneling and the overall protection device starts to conduct. As more current flows through the device, it destroys the pn junction, and thus the device fails.

When the device is used to protect circuits against voltage transients and power surges, it must be connected in parallel with the protected component(s), so that when the voltage transient or surge reaches its Zener Voltage, the current will be diverted to the device instead of flowing through the protected component(s). The device will then absorb the voltage and dissipate the energy as heat.

The BZM55B3V3-TR can also be used as a power supply voltage regulator or as a voltage reference component. In these applications, the device must be connected in series with the supply voltage, so that it acts as a voltage regulator or voltage-reference component. As the supply voltage rises, the current through the device will gradually increase until the device reaches its Zener Voltage, at which point the device will begin to conduct, limiting the rise in voltage.

Finally, the BZM55B3V3-TR can be used as an over-voltage protection component in power supply system applications. In this application, the device must be connected in series between the power supply and the load, so that it will limit the amount of voltage that can reach the load. When the voltage exceeds the Zener Voltage of the device, it will begin to conduct, limiting the voltage. As a result, the voltage that reaches the load is always kept within safe limits.

Conclusion

The BZM55B3V3-TR is a single zener diode offering high stability and exceptional reliability. It is suitable for a variety of applications, such as protection against voltage transients and power surges, voltage regulation and voltage-reference functions, and over-voltage protection in power supply system applications. The device operates based on zener breakdown, the effect that causes the diode to become increasingly conductive as the voltage reaches its Zener Voltage (Vz) rating. With its high reliability and versatility, the BZM55B3V3-TR is an excellent choice for a variety of applications.