SA85A R0G Circuit Protection

Voltage - Clamping (Max) @ Ipp:	137V
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):	3.8A
Series:	SA
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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TVS - Diodes

Transient Voltage Suppression (TVS) diodes are semiconductor devices designed to protect electronic components from voltage transient spikes and surges. They are also known as protection diodes or Transil diodes. The SA85A R0G is a unidirectional surge protection diode device manufactured by ON Semiconductor.

Application Field

The SA85A R0G TVS diode is used for a variety of different applications, including fiber-optic communications systems, automotive entertainment systems, automobiles, home automation, and industrial and commercial systems. This particular device is used in applications requiring robust protection against voltage and current transients, such as:

• Overvoltage protection and routing of excessive current.
• Lightning and surge protection.
• Data signal/power line filtering.
• DC line protection.
• Mouse/keyboard/peripheral and USB protection.
• Telecommunications systems.

The SA85A R0G is suitable for use in harsh environments, as it operates over a temperature range of -55 to +125 C, making it highly reliable and resilient in extreme temperatures.

Working Principle

The SA85A R0G TVS diode is designed to provide effective clamping of transient surges and protect sensitive devices from voltage and current spikes. When the diode is connected in series with the protected device, it will start to conduct any excess current once the breakdown voltage of the diode is reached. This limits the amount of voltage seen by the protected device to the diode’s breakdown voltage, thus providing a clamping or limiting effect and preventing higher voltages from reaching the device.The exact breakdown voltage of the SA85A R0G is dependent on the current flow and the internal resistance of the diode. The device also has a maximum power dissipation rating of 8.5W, and a peak pulse current rating of 6A. It also has a capacitance of 25pF and an ESD protection of 4000V.In summary, the SA85A R0G TVS diode is an effective and reliable device for providing protection against transient voltage surges, and is suitable for use in a variety of different applications and environments. Its paper-thin design means that it is very discreet and can be incorporated into any system without taking up a lot of space.

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