SMBJ24A-E3

series introduction

# Introduction to the SMBJ24A - E3 Product Series

## 1. Overview
The SMBJ24A - E3 product series belongs to the transient voltage suppressor (TVS) diode category. TVS diodes are crucial components in modern electronic circuits, designed to protect sensitive electronic devices from voltage spikes and transient events. The SMBJ24A - E3 series is specifically engineered to offer reliable and efficient protection in a wide range of applications, ensuring the longevity and proper functioning of electronic systems.

## 2. Key Specifications

### Electrical Characteristics
- **Breakdown Voltage (VBR)**: The SMBJ24A - E3 has a well - defined breakdown voltage. For this series, the typical breakdown voltage is around 26.7V. This means that when the voltage across the diode exceeds this value, the diode starts to conduct current, diverting the excess energy away from the protected circuit.
- **Reverse Stand - off Voltage (VRWM)**: It is specified at 24V. This is the maximum voltage that the diode can withstand in the reverse - biased condition without significant conduction. Electronic circuits can operate safely at or below this voltage level, and the TVS diode remains in a non - conducting state, having minimal impact on the normal operation of the circuit.
- **Peak Pulse Power Dissipation (PPP)**: The series is capable of handling a peak pulse power of 600W. This high power - handling capacity allows it to effectively absorb and dissipate large amounts of energy during transient events, such as electrostatic discharges (ESD), electrical fast transients (EFT), and lightning - induced surges.
- **Clamping Voltage (VC)**: When a transient event occurs, the TVS diode quickly switches to a conducting state and limits the voltage across the protected circuit to a safe level. The clamping voltage of the SMBJ24A - E3 is typically around 39.4V at a specified peak pulse current, ensuring that the voltage seen by the protected components does not exceed a dangerous threshold.

### Package and Physical Characteristics
- **Package Type**: The SMBJ24A - E3 comes in a SMB (DO - 214AA) package. This is a surface - mount package that offers several advantages. It is compact in size, which is beneficial for modern printed circuit board (PCB) designs where space is often limited. The surface - mount design also allows for automated assembly processes, increasing manufacturing efficiency and reducing costs.
- **Dimensions**: The SMB package has standard dimensions. The length is approximately 5.33mm, the width is about 3.56mm, and the height is around 2.16mm. These dimensions make it suitable for a variety of PCB layouts and can be easily integrated into different electronic devices.
- **Lead Material and Finish**: The leads are made of a suitable conductive material, and they are typically finished with a tin - based coating. This finish provides good solderability, ensuring reliable electrical connections during the PCB assembly process.

## 3. Applications

### Consumer Electronics
- **Smartphones and Tablets**: In these devices, the SMBJ24A - E3 can protect the sensitive integrated circuits (ICs), such as the system - on - a - chip (SoC), display drivers, and communication modules, from ESD events. When a user touches the device or it comes into contact with other objects, static electricity can build up and cause voltage spikes. The TVS diode quickly diverts this excess energy, preventing damage to the internal components.
- **Wearable Devices**: Wearable electronics, like smartwatches and fitness trackers, are also vulnerable to voltage transients. The compact size of the SMBJ24A - E3 makes it an ideal choice for these space - constrained devices

Images for reference

DO-214AC, SMA

SMBJ Series

Image Preview

Datasheets

• SMBJ5.0A - SMBJ188A
• PDF 2
• PDF 3

Partlist