Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	100V
Tolerance:	±10%
Power - Max:	5W
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 72V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 1A
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-214AA, SMB
Supplier Device Package:	SMBJ (DO-214AA)
Base Part Number:	SMBJ5378

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Understanding the SMBJ5378AE3/TR13

Introduction

The SMBJ5378AE3/TR13 is a type of Zener diode that is commonly used in a wide variety of applications. This particular device is a single diode with a breakdown voltage of 5.3 V and Ifsm of 203 amperes (peak).Its small size makes it suitable for use in circuit designs that require a high degree of flexibility and space savings. To understand its uses and features, it\'s important to understand its application fields, working principle, and ratings.

Application Fields

The SMBJ5378AE3/TR13 is utilized in a variety of applications, including:

• Overvoltage Protection
• ESD and EFT Suppression
• Power Switching
• Clamping
• Noise Elimination
• Manufacturing Line Testing
• Low-Voltage Suppression
• Transceiver Protection
• Surge Protection

Working Principle

Zener diodes, such as the SMBJ5378AE3/TR13, are designed to withstand a voltage greater than their rated (knee) voltage. At voltages higher than their rated voltage, the Zener diode will break down, or "zener," and conduct a current. This current is limited by the diode\'s maximum current rating, known as Ifsm. The maximum reverse current of the device is specified in the Ifsm ratings. As the voltage across the diode increases, the current will increase as well, until it reaches the Ifsm limit. At this point, the current will level off until the diode fails.

Ratings

Understanding the ratings of the SMBJ5378AE3/TR13 will help to ensure that it is used properly in the circuit design. The device\'s ratings are:

• Vz (Breakdown Voltage): 5.3 V
• Iz (Zener Current): 0.2 A
• Ifsm (Repetitive Peak Forward Surge Current): 203 A peak
• Vf (Forward Voltage): 0.9 V max @ Ifms

Conclusion

The SMBJ5378AE3/TR13 is a Zener diode that can be used in a variety of applications due to its small size and flexible ratings. Its breakdown voltage is 5.3 V, and its peak forward surge current rating is 203 amperes. Additionally, its forward voltage rating is 0.9 V max at Ifsm.Overall, understanding the SMBJ5378AE3/TR13\'s application fields, working principle, and ratings is imperative to ensure its proper usage in circuit designs.

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