MAP4KE300AE3

Voltage - Clamping (Max) @ Ipp:	414V
Supplier Device Package:	DO-204AL (DO-41)
Package / Case:	DO-204AL, DO-41, Axial
Mounting Type:	Through Hole
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	400W
Current - Peak Pulse (10/1000µs):	1A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	285V
Voltage - Reverse Standoff (Typ):	256V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

MAP4KE300AE3 is a transient voltage suppressor (TVS) diode designed to protect sensitive electronic components from voltage transients induced by lightning and other transient voltage events. TVS devices are used in a variety of applications, including automotive, industrial, medical and consumer applications. This article discusses the application field and working principle of MAP4KE300AE3.

Application field of MAP4KE300AE3

MAP4KE300AE3 is an ultra low capacitance silicon TVS diode suitable for many applications requiring fast, reliable, and ultra-low capacitance protection from transient voltage events. Its high body diode eases EMI/RFI filtering requirements and its low capacitance improves the system’s signal integrity.In automotive applications, MAP4KE300AE3 is used in Communication BUS Lines (CAN, LIN, K-Line, etc.), electronic control units, multimedia and entertainment systems, engine control, and light emitting diode (LED) lights. It is also used to protect power supplies, radio frequency (RF) circuits, and protection from high voltage and electrostatic discharge (ESD) in medical device applications. MAP4KE300AE3 is ideal for protection of signal and power bus lines from transient voltage threats in industrial communication and control systems.

Working Principle of MAP4KE300AE3

MAP4KE300AE3 is a silicon TVS diode that offers industry-leading protection in a ultra-low capacitance and ultra-tiny footprint. It can handle surge pulses up to 400W (10/1000µs). The device also has a PMOS (PMOS) body diode protection which helps to ease EMI/RMI filtering requirements.The basic operating principle of a TVS diode is simple. A voltage surge caused by lightning or other transient voltage events causes a large current to flow through the diode’s terminals. The diode then acts as a gatekeeper, allowing only a predetermined amount of current to pass through, protecting the connected device from damage.When an incoming surge voltage is above the diode’s clamping voltage, it will turn on and start conducting current, thus limiting the voltage between its terminals and thus protecting other components from overvoltage conditions. As soon as the power pulse is over, the diode will turn off again.

Conclusion

In this article, we discussed the application field and working principle of MAP4KE300AE3, a transient voltage suppressor (TVS) diode. In automotive applications, MAP4KE300AE3 is used to protect electronic control units, multimedia and entertainment systems, engine control, and LED lights, while in medical applications it is used to protect power supplies, RF circuits, and protection from high voltage and ESD. The working principle of a TVS diode is that it acts as a gatekeeper, allowing only a predetermined amount of current to pass through, protecting the connected device from damage.

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