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):	3.7A
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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SA85A application field and working principle

The SA85A is an example of a TVS - Diode, and it has a distinctive field of application and operating principle. This article will discuss the application field and work principle of the SA85A.

Application field of SA85A

The SA85A is a device designed to protect any device working with a voltage higher than, or lower than, the designated working voltage. It is often used in applications where there are potential damage from Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), or any surge voltage coming from outside, in part due to the non-linear properties of the TVS diode.These surges occur in two directions when the current passes through the TVS diode. The first direction is when the peak current passes through the diode from high voltage to low voltage, and the second is when the peak current passes through the diode from low voltage to high voltage.The SA85A consists of a semiconductor junction and has an operating temperature range from -55°C to 150°C. It also has a peak impulse current rating of 2000A, and its peak pulse power dissipation rating of equal to or greater than 600W. Its temperature coefficient is designated at 100PPM/°C, and its typical junction capacitance is around 2000pF. It also has an insulation resistance of 1000MΩ, and its clamping voltage is specified at 8V. The diode also has a package size of 0.2" x 0.2" x 0.11" which make it extremely compact and efficient for many applications.

Working principle of SA85A

The working principle of the SA85A involves the passage of an electrical current through it. The current passes through the diode in two ways; either from high voltage to low voltage, or low voltage to high voltage. When the voltage reaching the diode is above the specified operating voltage, then the voltage is “clamped” at a specified amount, and the excess voltage is dissipated as heat. When the voltage reaching the diode is below the specified operating voltage, then the SA85A acts as a short-circuit, forming a conducting channel between the two sides.Due to its non-linear properties, the SA85A can absorb huge amounts of the electrical energy coming from outside. This increases the service life of the device as it can dissipate the energy more efficiently than traditional devices. Also, as it is a TVS diode, it can be used to protect against possible damage from Electrostatic Discharge (ESD), Electrical Fast Transient (EFT), and other surge voltages, making it a great protection for electronic devices.

Conclusion

In conclusion, the SA85A is an effective TVS - Diode with a great application field and working principle. It is designed to protect any device working with a voltage higher than, or lower than, the designated working voltage. It can absorb huge amounts of the electrical energy coming from outside and is effective in protecting against possible damage from Electrostatic Discharge (ESD), Electrical Fast Transient (EFT) and other surge voltages. The SA85A is a great protection for electronic devices due to its reliability and efficiency.

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