Introduction

Transient voltage suppressors (TVS) are devices used to protect electronic circuits from voltage surges caused by lightning, electrostatic discharge, or switching. SMCJ20A-TR is one of the popular TVS devices that can protect sensitive electronic components from transient voltages. In this blog post, we'll explore the key features of SMCJ20A-TR and its applications.

Features of SMCJ20A-TR

SMCJ20A-TR is a unidirectional TVS with a standoff voltage of 20V. It has a maximum clamping voltage of 32.4V and a peak pulse current of 43.3A. SMCJ20A-TR has a low leakage current of 1 μA, making it an excellent choice for low-power applications that require high accuracy and stability.

SMCJ20A-TR is packaged in a surface mount D0-214AB package with two solderable terminals. The compact size of the package makes it suitable for use in space-constrained applications. Additionally, SMCJ20A-TR is RoHS-compliant, meaning it's free from hazardous substances like lead.

Applications of SMCJ20A-TR

SMCJ20A-TR is used in various electronic applications to protect against transient voltages. Here are some of its applications:

1. Power Over Ethernet (PoE) applications\

Power over Ethernet (PoE) applications are increasingly becoming popular in end-point devices such as cameras, sensors, and access points. These devices require TVS devices to prevent damage to the sensitive electronic components in the event of voltage surges. The low-leakage current of SMCJ20A-TR makes it ideal for use in PoE applications.

2. Consumer electronics\

SMCJ20A-TR is used in consumer electronics such as smartphones, tablets, and wearables. These devices are susceptible to voltage surges when charging, making it critical to have TVS devices to protect sensitive components like microcontrollers and sensors. The compact size of the SMCJ20A-TR package makes it suitable for use in these devices.

3. Automotive electronics\

Automotive electronics require TVS devices to protect against voltage surges caused by engine control or switching of inductive loads. SMCJ20A-TR is suitable for use in automotive electronics due to its high surge protection and low-leakage current.

4. Industrial electronics\

Industrial electronics such as programmable logic controllers (PLCs) and motor control units (MCUs) require TVS devices to protect against voltage surges caused by switching and inductive voltage spikes. The high peak pulse current rating of SMCJ20A-TR makes it ideal for use in these applications.

Conclusion

SMCJ20A-TR is a unidirectional TVS device that offers excellent surge protection and low-leakage current. Its compact size and RoHS-compliance make it ideal for use in various electronic applications such as PoE, consumer electronics, automotive electronics, and industrial electronics. Remember to choose the right TVS device for your application to ensure maximum protection against transient voltages. With SMCJ20A-TR, you can rest assured your electronics are well protected.