MA1.5KE400AE3

Voltage - Clamping (Max) @ Ipp:	548V
Supplier Device Package:	DO-204AR
Package / Case:	DO-204AR, Axial
Mounting Type:	Through Hole
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	4A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	380V
Voltage - Reverse Standoff (Typ):	324V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

A Transient Voltage Suppression (TVS) diode, also known as a suppressor, is an ideal protective device for limiting transient overvoltages, such as high-energy pulses from an EMP (electromagnetic pulse), lightning, electrostatic discharges, or inductive load switching. The MA1.5KE400AE3 is a member of the 400W Peak Power TVS Diode family from Bourns. This device is composed of a TVS diode in a DO-204 package, and is designed to protect sensitive electronic equipment from voltage spikes.

MA1.5KE400AE3 Application Field

The MA1.5KE400AE3 is an ideal solution for protecting against lightning, electromagnetic pulse (EMP), inductive load switching, and electrostatic discharges. It is also ideally suited for overvoltage protection of microprocessors, I/O ports, DSPs, and other digital, analog, and mixed-signal devices. Additionally, it is suitable for use in Telecom, IT and Industrial equipment, where fail-safe protection is required under extreme overvoltage conditions.

MA1.5KE400AE3 Working Principle

The MA1.5KE400AE3 is designed around the principle of a Zener diode, where the breakdown voltage is much higher than the usual Zener voltage. When a high voltage spike or surge is detected, the diode\'s Zener breakdown voltage is exceeded, resulting in a very low resistance between anode and cathode. This in turn causes a large current to flow through the diode that is clamped to the breakdown voltage. The current is then diverted away, protecting against the voltage spike and protecting the downstream components from voltage damage.

Conclusion

The MA1.5KE400AE3 TVS Diode from Bourns is an ideal solution to protect sensitive electronic equipment from voltage spikes. It is designed for use in Telecom, IT, and Industrial equipment where a fail-safe protection is required under extreme overvoltage conditions. It employs the concept of a Zener diode, where the breakdown voltage is much higher than a typical Zener voltage, and once exceeded by a voltage spike or surge, a very low resistance between anode and cathode is created, resulting in a large current being diverted safely away from the sensitive components.

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