SMB10J8.0AHE3/5B Circuit Protection

Current - Peak Pulse (10/1000µs):	73.5A
Base Part Number:	SMB10J
Supplier Device Package:	DO-214AA (SMB)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	1000W (1kW)
Series:	Automotive, AEC-Q101, TransZorb®
Voltage - Clamping (Max) @ Ipp:	13.6V
Voltage - Breakdown (Min):	8.89V
Voltage - Reverse Standoff (Typ):	8V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

TVS - Diodes are one of the most widely used and useful components in the electronics industry. They are used to protect circuits against electrical overstress, from static or transient pulses and from EMI/RFI (electromagnetic interference/radio frequency interference) and from power rails. SMB10J8.0AHE3/5B is a highly efficient and reliable device used to protect circuits from transient voltage surges. It has a wide variety of applications in consumer electronics, automobiles, industrial, aerospace and medical fields.

Application Field

The SMB10J8.0AHE3/5B is widely used in a variety of electronic applications. It features low capacitance, fast response time , tight control of its voltage clamping characteristics, and low leakage current. It can be used in automotive circuits, consumer electronics, datacom, telecommunications and industrial control can circuits. It can also be used as a protection device for high-speed logic lines.

Working Principle

The SMB10J8.0AHE3/5B works on the principle of a Metal Oxide Varistors (MOV) or Transient Voltage Suppressor (TVS). It is a two terminal passive device, with a internal passivating layer in between the two terminals. When subjected to a voltage surge, it will clamp the voltage to a safe level. This process effectively protects the circuit from damage due to overvoltage. The SMB10J8.0AHE3/5B is designed to be sensitive to short, medium or long duration voltage surges.The MOV is a voltage dependent (nonlinear) resistor, whose resistance is very high, approximately above 10 Ohms and decreases drastically when the applied voltage increases. At the higher voltage threshold, a varistor starts to conduct and it can maintain a high peak pulse current. The value of the voltage depends on the size of the MOV and the materials used.The MOV passes the current when the voltage is above the trip point of the device and the current flowing through the MOV is clamped between the two terminals. The MOV provides very low capacitance and fast response time, allowing it to react quickly and efficiently to voltage surges.The MOV also provides protection against over-voltage, over-temperature, over-use and over-charge conditions. It can protect up to 10,000 Amps peak and a peak voltage of 8.0 Joules.

Conclusion

In conclusion, the SMB10J8.0AHE3/5B is a highly efficient and reliable Transient Voltage Suppressor (TVS) device, used extensively in a variety of electronic applications. It works on the principle of a Metal Oxide Varistors (MOV) and it is designed to provide fast response time and low capacitance, allowing it to provide reliable protection from transient voltage surges.

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