SMZJ3800BHE3/5B

Diodes - Zener - Single

The SMZJ3800BHE3/5B is a 3.2 V Zener diode used in industries such as automotive, computer, consumer and telecommunications applications. This single junction diode is designed to produce a stable voltage reference, current regulation and surge protection. It is ideal for use in non-rectified pulsed applications.

Characteristics

The SMZJ3800BHE3/5B has a maximum power rating of 1000 mW, with a junction and storage temperature ranging from – 55 °C to 150 °C and a current range from 0.1 mA to 1.0 A. This device carries reverse break down voltage of 3.2V with a maximum power dissipation of 1.2 W at either 25 °C or at 70 °C. It has a zener voltage of 6 V with a zener current of 40 mA.

Features

• High reliability in design
• High power rating and thermal capability
• Excellent reverse break down characteristics
• Reverse stand-off and power dissipation
• Excellent stability over wide current range
• Reliable in non-rectified pulsed applications

Applications

The SMZJ3800BHE3/5B is widely used in the automotive, computer, telecommunications and consumer applications. It is mainly used in high power applications due to its reliable stability in voltage regulation and current control. This device can be used in applications to provide reverse break down protection for electronic circuits and devices such as switching regulators, power steering systems, tachometers, noise filters, etc.

Working Principle

The SMZJ3800BHE3/5B works on the principle of Zener breakdown. In this breakdown effect, current is allowed to flow from P-type material to n-type material when the reverse bias voltage across the junction exceeds the breakdown voltage of the junction. This increased current flow causes an impurity layer to be formed that is known as a depletion layer. This impurity layer reduces the reverse voltage of the junction, which causes the Zener effect.

Zener diodes used in such circumstances work by allowing the current to flow through the diode in only one direction, thus regulating the voltage flow. When the voltage difference across the diode reaches a certain level known as the Zener voltage, it results in the breakdown of the P-N junction due to the increased current flow. This breakdown causes a regulated voltage across the diode known as the Zener voltage, which is generally how the SMZJ3800BHE3/5B is used in many applications.