SMLJ78E3/TR13 Circuit Protection

Current - Peak Pulse (10/1000µs):	21.6A
Base Part Number:	SMLJ78
Supplier Device Package:	DO-214AB
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	300W
Series:	--
Voltage - Clamping (Max) @ Ipp:	139V
Voltage - Breakdown (Min):	86.7V
Voltage - Reverse Standoff (Typ):	78V
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 suppressor (TVS) diodes are solid state semiconductor devices used to protect electrical and electronic systems from damage caused by voltage transient. When a transient voltage is applied to the input of a TVS diode, the diode acts as a short circuit and absorbs excess current. When the transient voltage dissipates, the diode reverts to its normal operation, allowing the current to flow normally and protect the circuit. The SMLJ78E3/TR13 is a type of TVS diode and it has the following characteristics and application fields. The SMLJ78E3/TR13 is designed to protect circuit components from damage due to electrical surge events with minimum clamping voltage. It is an unidirectional Transient Voltage Suppressor, able to operate at a low capacitance and high surge current capability. It has an ultra-low capacitance of 2.1pF and a low clamping voltage of 13.4V. It also has a fast response time – its trr (reverse recovery time) is 10nS and its qrr (total dynamic avalanche charge) is 98nC. Its operating temperature range is -55°C to 150°C. The most common application field of SMLJ78E3/TR13 is in consumer electronics such as telecommunications equipment, automotive electronics, notebook computers, general-purpose consumer devices and digital appliances. It is also used in industrial equipment such as uninterruptible power supplies, UPS, instrumentation and industrial control systems as well as surveillance and security systems. It is ideal for applications that require low capacitance, fast response time and low clamping voltages. The SMLJ78E3/TR13 diode works on the principle of surge absorption. When a transients voltage is applied to the input of the diode, it acts as a short circuit, absorbing the current of the incoming surge. The diode is designed to activate and clamp the voltage at a low level and then dissipates the transient energy as heat. This helps to protect the circuit from overvoltage damage. In summary, the SMLJ78E3/TR13 is a type of TVS diode designed to protect circuit components from voltage transients. It has an ultra-low capacitance of 2.1pF and a low clamping voltage of 13.4V, and a fast response time. It is widely used in consumer and industrial electronics, and it works on the principle of surge absorption.

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