Current - Peak Pulse (10/1000µs):	60A
Base Part Number:	SMLJ28
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:	50V
Voltage - Breakdown (Min):	31.1V
Voltage - Reverse Standoff (Typ):	28V
Bidirectional 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

Surge protection devices are critical components for the safe operation of electrical and electronic equipment in harsh electrical environments. Transient Voltage Suppression (TVS) Diodes, also referred to as TVS Zener or just TVS, combine the functions of both a Zener diode and TransZorb transient voltage suppressor in a single package.The SMLJ28CE3/TR13 is a 300 Watts, 2-line Bidirectional Transient Voltage Suppressor (TVS) Diode specifically designed to protect against overvoltage and reduce energy losses in applications where extreme high or low voltage conditions exist. In this article, we will discuss the application fields and working principle of the SMLJ28CE3/TR13.

Application Fields of SMLJ28CE3/TR13

The SMLJ28CE3/TR13 is used in numerous applications, including automotive, consumer, industrial, medical, and military. Overvoltages due to electrostatic discharge (ESD) spikes, lightning, and inductive switching are always a risk in these applications, and the protective features of the SMLJ28CE3/TR13 can help avoid any malfunctions or system disruptions due to these overvoltages.The SMLJ28CE3/TR13 can be used in automotive Electronics Control Units (ECUs), battery packs, vehicle interiors, and powertrain systems. The device is particularly useful in providing ESD protection to the infotainment system and in the powertrain control module (PCM). In consumer electronics, the SMLJ28CE3/TR13 can provide ESD and EFT protection to systems such as laptops and personal computers, mobile phones, and cameras.The device can also be used in industrial automation, medical systems, and military applications. It is particularly suitable for general ESD and EFT protection of the input and output side of switching regulators, controllers, and switch modules. The SMLJ28CE3/TR13 can also provide protection from false system trips due to ground potential changes and intermittent short circuits.

Working Principle of SMLJ28CE3/TR13

The SMLJ28CE3/TR13 is a two-line bidirectional transient voltage suppressor diode that operates in a manner similar to a Zener diode. It consists of two complementary silicon PIN diodes connected in parallel with reverse polarity. The device has a high power rating and low surface thermal resistance due to its low-thermal-resistance package.In the application of the SMLJ28CE3/TR13, reverse voltage is applied across the diode, and the shock-induced current flows across the diode in the same direction as the applied voltage. This creates an avalanche breakdown, and the power is dissipated within the junction of the diode.When the breakdown voltage is exceeded, the SMLJ28CE3/TR13 will rapidly reduce its resistance and clamp the voltage to the breakdown level to limit the overvoltage. The device also has the advantage of having a high surge current rating, so it can absorb more energy than the nominal power rating.

Conclusion

The SMLJ28CE3/TR13 is a versatile and robust transient voltage suppressor diode with the ability to protect circuits and systems from overvoltage and ESD/EFT spikes. Its wide range of applications and easy-to-use design make it one of the most popular TVS devices on the market.

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