BZX84B24-HE3-08

BZX84B24-HE3-08 Application Field and Working Principle

BZX84B24-HE3-08 is a single zener diode made by STMicroelectronics. This diode is designed specifically for ESD and transient protection applications, in which it can reduce the damage of electronic components caused by voltage swings and surges. The BZX84B24-HE3-08 diode is usually used in automotive and industrial applications and can withstand higher temperatures than similar components.

Package

BZX84B24-HE3-08 comes in a SOD-323FL surface-mount package and has a low profile of only 0.9 mm. This package takes up little space, making it ideal for smaller designs, such as circuit boards for laptops or cell phones.

Rating Characteristics

BZX84B24-HE3-08 has a wide forward voltage range of 1.85 V to 18 V and an instantaneous reverse voltage range of 24 V. It is rated at 400 mW of continuous power, with a pulse power rating of 1 W. Its non-repetitive peak pulse current is rated at 1 A. In addition, the maximum junction temperature is rated at 125 °C.

Static Characteristics

BZX84B24-HE3-08 has a reverse voltage coefficient of 0.58%/V and its capacitance is less than 5 pf. The zener breakdown voltage of the diode is 24 V, and its clamping voltage is below 28 V. The area of the marker is 0.7 mm2, and its variance is within ±5%.

Working Principle

BZX84B24-HE3-08 is a voltage-dependent diode, meaning it allows current to flow in one direction but not in the other. When the diode is exposed to a reverse voltage, it blocks the current and only allows a very small current to flow. But when the voltage reaches the zener voltage, the diode begins to conduct current in the reverse direction, lowering the voltage to the zener voltage. This ability to regulate the voltage makes the BZX84B24-HE3-08 ideal for ESD and transient protection in automotive and industrial applications.

Applications

BZX84B24-HE3-08 is a widely used diode for ESD and transient protection applications in automotive electronics, industrial control systems and consumer electronics. The low profile of the SOD-323FL package and the wide forward voltage and instantaneous reverse voltage range make the diode suitable for designs with tight space constraints. The high power handling capabilities of the diode also make it suitable for power supplies and other high power applications.