SA7.5-E3/54

Series:	TransZorb®
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Type:	Zener
Unidirectional Channels:	1
Voltage - Reverse Standoff (Typ):	7.5V
Voltage - Breakdown (Min):	8.33V
Voltage - Clamping (Max) @ Ipp:	14.3V
Current - Peak Pulse (10/1000µs):	35A
Power - Peak Pulse:	500W
Power Line Protection:	No
Applications:	General Purpose
Capacitance @ Frequency:	--
Operating Temperature:	-55°C ~ 175°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AC, DO-15, Axial
Supplier Device Package:	DO-204AC (DO-15)

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SA7.5-E3/54 Application Field and Working Principle

TVS - (Transient Voltage Suppression) diodes are used to protect both the electronic circuits and components from any malfunction due to overvoltage or high transient voltage. These diodes are used in power system protection, computer and appliance the surge protection, telecommunications equipment surge protection and automotive electronic system protection.The SA7.5-E3/54 is a sensitive transient voltage suppression diode which provides the necessary protection to the electronic devices. The connected devices, such as resistors, capacitors, transformers, and semiconductor devices, are protected against over voltage and surges up to a surge figure determined by the breakdown voltage of the diode.

Working Principle

The SA7.5-E3/54 is a uni-directional TVS diode. When the incoming surge currents reach a specific voltage, the diode enters in its breakdown region and starts clamping the overvoltage. This action is determined by the breakdown voltage which is a steady-state voltage where an avalanche occurs. This breakdown voltage is represented by the peak pulse power of the TVS diode.The working of the SA7.5-E3/54 is based on the PN junction of the diode. In the off state, the PN junction created allows redistribution of the charge carriers on either side of the junction. With a surge voltage, the current increases exponentially and the avalanche occurs which causes the breakdown of the junction. This creates a low impedance network between the anode and cathode and the overvoltage or surge is forced to flow from anode to cathode.

Protection Functions

The SA7.5-E3/54 has several protective functions which make it ideal for protecting sensitive electronic components from overvoltage and surges. Some of the features of the diode are:1. Fast Response Time: The diode has a fast response time which means that it can detect and suppress the surge within a few nanoseconds.2. Low Clamping Voltage: The diode has been designed with a low clamping voltage which means that it will not damage the electronic components during operation.3. Wide Operating Range: The diode is able to work over a wide range of temperatures and voltages.4. Over current Protection: The diode has been designed with an over-current protection by providing limiting resistors.5. High Power Handling Capability: The diode is able to handle high power surges of up to 1000 watts.

Applications

The SA7.5- E3/54 TVS diode has many applications because of its features and protection functions. It is often used in the following applications:1. Power Supply Protection: TVS diodes can be used to protect power supplies from transient voltage and surge currents in a wide range of industries.2. Computer and Appliance Surge Protection: The diode can be used to protect computer and appliances from any overvoltage surge during operation.3. Telecommunications Equipment Protection: The diode can be used to protect telecommunications equipment from faulty wiring and high voltages in the system.4. Automotive Electronic System Protection: The diode can be used to protect automotive and other commercial vehicles from corrosive currents and transients in the system.5. High Frequency Electronic Equipment Protection: The diode can be used to protect high frequency electronic equipment from any transient currents in the circuit.

Conclusion

The SA7.5-E3/54 is an ideal TVS diode for protecting sensitive electronic components from overvoltage or surge. The diode has a fast response time, low clamping voltage, wide operating range, over-current protection and high power handling capability. The diode can be used in a wide range of applications such as power supplies, computers and appliances, telecommunication equipment, automotive electronics, and high frequency electronic equipment.

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