SMAJ300E3/TR13

Current - Peak Pulse (10/1000µs):	--
Base Part Number:	SMAJ300
Supplier Device Package:	DO-214AC (SMA)
Package / Case:	DO-214AC, SMA
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	500W
Series:	--
Voltage - Clamping (Max) @ Ipp:	--
Voltage - Breakdown (Min):	--
Voltage - Reverse Standoff (Typ):	300V
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 of TVS -Diodes

Transient Voltage Suppressors (TVS) diodes are widely used in industries to protect electrical components from voltage transients, which can occur frequently under voltage surges caused by turns-on and turns-off of power supply systems. TVS diodes are semiconductor components that are capable of being used for surge protection in a wide variety of applications. They are typically used in circuits to protect against voltages exceeding the breakdown voltage of the device. TVS diodes are available in a wide range of styles and sizes for various applications.

SMAJ300E3/TR13 Application Field

The SMAJ300E3/TR13 Transient Voltage Suppressor is an ultra low to medium freewheeling diode used for ESD protection. It is used in a wide variety of applications in both commercial and industrial fields. In commercial settings, the device is used to protect sensitive electronic equipment from power spikes and surges. In industrial settings, it is used to protect low voltage circuits from electrical transients that can occur when switches are operated.The SMAJ300E3/TR13 is an uni-directional device, providing protection of one side of a circuit against voltages exceeding one or two times its breakdown voltage. The device is designed for low to medium-load applications with operations up to 300V. It offers excellent protection from high-energy discharges such as ESD.

Working Principle

When under normal operating conditions, the TVS diode acts as an open circuit and does not interfere with the normal flow of voltage and current. Under normal operating conditions, the diode does not conduct and therefore does not affect normal operation of the circuit.When a voltage transient is encountered, the reverse recovery characteristics of the diode allow it to bypass current to a safe level. This allows the TVS diode to quickly absorb the extra energy due to the transient, and protect the circuit. The TVS diode will act as a short-circuit during the absorption stage, limiting the voltage at the protected element to a safe level. Once the transient is complete, the diode reverts back to an open circuit state and ceases to conduct any current. The advantage of these components is that they are designed to absorb only the excess energy present during the transient, instead of blocking the entire transient.

Conclusion

The SMAJ300E3/TR13 Transient Voltage Suppressor (TVS) diode is a uni-directional device used in a wide variety of applications for protection against voltage transients. It is designed for low to medium-load applications with operations up to 300V. Its reverse recovery characteristics and ability to absorb only the excess energy present during the transient make it an excellent choice for surge protection.

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