SMBJ85ATR

Voltage - Clamping (Max) @ Ipp:	137V
Supplier Device Package:	SMB (DO-214AA)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Current - Peak Pulse (10/1000µs):	4.4A
Series:	--
Voltage - Breakdown (Min):	94.4V
Voltage - Reverse Standoff (Typ):	85V
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

SMBJ85ATR is a TVS (Transient Voltage Suppressor) diode that is widely used for protecting a circuit from voltage transients caused by Electrostatic Discharge, Lightning Strikes and other events. It is suitable for high speed, low power, low voltage applications. This device is capable of handling high energy surge events of up to 8.5A and typical peak pulse power of 250W.

Application Field

The wide range of applications that SMBJ85ATR is used for include computer/telecom, consumer electronics, automotive, industrial, medical, etc. It also finds its usage in Telecom/Network Test Equipment, Surge Protection for LANs, Notebook Computers, Signal & Data Line Protection, Hard Disks Drives and other High-Speed Circuits.

Working Principle

The working principle of SMBJ85ATR is quite simple and straightforward. When a voltage transient occurs, the current flows through the device and is able to absorb or disperse the energy, protecting the device and other components in the circuit. When the transient is over, the normal operation is resumed. All these functions are due to the special features of the I-V curve which allows the energy from the transient to be dissipated or absorbed.SMBJ85ATR TVS diode consists of two separate junctions: cathode and anode.The cathode junction is reverse-biased and acts as the input. The anode junction is forward-biased and acts as the output. When a transient occurs, the junction is forced to act as an open circuit, allowing the energy generated by the surge to be dissipated.

Benefits of SMBJ85ATR TVS Diodes

SMBJ85ATR TVS diodes offer many benefits when compared to other types of surge protection components. It is robust and reliable compared to other components, due to its low capacitance, low leakage current, and low power consumption. It also has a wide operating temperature range from -55°C to +125°C.The SMBJ85ATR also offers an excellent capacitance between anode and cathode, and this helps to limit the amount of energy that is allowed to pass through the device. This reduces the chances of any lasting damage being done to other components and the circuit in general. Furthermore, it is easy to integrate into existing systems due to its small size and can be used in a variety of applications.

Conclusion

In conclusion, the SMBJ85ATR is a reliable and robust TVS diode that offers excellent protection to your circuits from transients, surges, and other events. It is well-suited for low voltage, high speed, low power applications, and can be easily integrated into existing systems due to its small size. Its wide operating temperature range and low capacitance also provide additional benefits.

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