SA8.5C Circuit Protection

Voltage - Clamping (Max) @ Ipp:	15.12V
Supplier Device Package:	DO-204AC (DO-15)
Package / Case:	DO-204AC, DO-15, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	35.4A
Series:	SA
Voltage - Breakdown (Min):	8.93V
Voltage - Reverse Standoff (Typ):	8.5V
Bidirectional 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

The SA8.5C is one of the many unidirectional TVS – diodes available on the market today. It is designed to protect sensitive electronics from transient voltage caused by lightning, electrostatic discharge (ESD), and inductive switching. In this article, we will discuss the application field and working principles of the SA8.5C TVS diode.

Application Field

TVS – diodes such as the SA8.5C are designed to provide a minimal level of transient voltage protection for electronic components and devices. Their primary application is in the data and telecommunications industry, where protection against transient voltage is critical for the safe operation of networks. The SA8.5C is also widely used in the automotive industry to protect ECUs, transponders, and various other electronic components from surges caused by lightning strikes and electromagnetic pulses.The SA8.5C can also be used in the IT industry, as it provides a dependable level of protection against ESD and other transients. This protection makes it a suitable choice for motherboards, hard drives, and other computer components. In addition, it can also be used to protect sensitive consumer electronics such as laptop computers and cellular phones.

Working Principle

The SA8.5C is a unidirectional TVS diode, which means it is capable of handling only forward voltage. When a surge of current is applied, the diode quickly redirects the surge into a low-impedance path to ground, thereby protecting the component from damage.The SA8.5C is designed to be extremely fast and efficient. Its low capacitance and low clamping voltage allow it to react quickly to transient voltage surges. The diode also has an ultra-wide operating temperature range, which allows it to provide reliable protection even in harsh environments.The SA8.5C has a maximum leakage current of 5μA and can withstand up to 8.5 V of reverse voltage. It is also compliant with many ESD standards, such as IEC 61000-4-2 and IEC 61000-4-5. The device features a low dynamic impedance between 1 ohm and 10 ohm and an extremely low off-state capacitance of 0.2pF.

Conclusion

The SA8.5C is a dependable unidirectional TVS diode that provides superior protection against transient voltage. It has wide applications in various industries such as telecommunications, automotive, and IT. Its low capacitance and low clamping voltage allow it to react quickly to voltage surges, and its wide operating temperature range guarantees reliable operation even in extreme environmental conditions. The device also has a low dynamic impedance and a very low off-state capacitance, making it a must for any application that requires reliable protection against transients.

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