GL12T-HE3-18

Voltage - Clamping (Max) @ Ipp:	24V
Supplier Device Package:	SOT-23
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	2.5pF @ 1MHz
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	300W
Current - Peak Pulse (10/1000µs):	5A (8/20µs)
Series:	Automotive, AEC-Q101
Voltage - Breakdown (Min):	13.3V
Voltage - Reverse Standoff (Typ):	12V (Max)
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

TVS (Transient Voltage Suppressor) diodes are commonly used in the field of power electronics, for the purpose of protecting sensitive electronic components from high voltage transients. The GL12T-HE3-18 is an example of a TVS diode that can be used for such applications. This article will explain the application field and working principle of GL12T-HE3-18.

Profile

The GL12T-HE3-18 is an ultra-fast bidirectional TVS diode designed to protect against transient voltage spikes up to 18V. It offers superior performance over its predecessor, the GL12T-HE2, with a clamping voltage of 17.4V @ 1.5A. It is also capable of absorbing energy up to 170mJ. This diode has an ESD rating of 25kV, indicating that it can withstand high levels of electrostatic discharge. Furthermore, the GL12T-HE3-18 has a low leakage current of 0.2nA and a low capacitance of 0.1pF. With its low power drain capability, this diode is also ideal for applications that require low power consumption.

Application Field

The GL12T-HE3-18 is primarily used to protect sensitive electronic components from transient voltage spikes. This diode is well-suited for a variety of power electronic applications, such as automotive, industrial, and consumer electronics. It is also suitable for point of sale terminals, communication systems, and other equipment where protection from high voltage transients is needed. Moreover, this diode can be used for general protection from highly transient external ESD events, as well as lightning strikes.

Working Principle

When a transient voltage spike is detected, the GL12T-HE3-18 will clamp the current flowing through it to the specified voltage level (18V). When the transient voltage subsides, the diode will immediately cease conducting current, allowing the protected circuit to function normally. In addition to its sensitive voltage triggering mechanism, the diode also has a high peak current capacity, allowing it to effectively suppress overloaded voltage surges. The diode also has a high storage capacity, allowing it to absorb energy up to the specified level (170mJ).

Conclusion

In conclusion, the GL12T-HE3-18 is an ultra-fast bidirectional TVS diode designed to protect electronic components from transient voltage spikes up to 18V. This diode offers superior performance over its predecessor, and can be used in a variety of power electronic applications. Its fast response time, high peak current capacity, and high storage capacity makes it an ideal choice for protecting sensitive electronic components from transient voltage spikes.

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