MA1.5KE91A

Voltage - Clamping (Max) @ Ipp:	125V
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):	12A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	86.5V
Voltage - Reverse Standoff (Typ):	77.8V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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An important part of electronic circuits is transient voltage suppression (TVS) diodes, which provide protection against transients by regulating high voltage signals. The MA1.5KE91A is a common TVS diode, used in a wide variety of applications for its superior performance in suppressing voltage transients. This article examines the application fields and working principle of the MA1.5KE91A.The MA1.5KE91A is a compact, surface mount TVS diode, suitable for use in high-voltage, high-frequency applications. It offers excellent transient voltage clamping, excellent clamping response time, and a low holding current. The diode can be used in a variety of applications, in which it performs the important function of protecting the circuit from excessive voltage transients.Some of the typical applications of the MA1.5KE91A include protection of charging ports, USB ports, Ethernet ports, power supplies, and data lines. It is also used in automotive applications such as ESD protection, battery protection, and power distribution systems. The TVS diode also finds its use in industrial, telecommunications, and consumer electronics applications as it provides excellent protection against high-voltage transients.In terms of physical construction, the MA1.5KE91A consists of an anode and cathode connected to a Zener diode junction, enclosed in an encapsulated package. The diode operates on the principle of an avalanche breakdown, wherein high voltage transients cause a decrease in the diode voltage, triggering the conduction of current. It acts as an electronic short circuit, absorbing the excess voltage and limiting current flow, thus protecting the circuit from damage caused by high-voltage transients.The MA1.5KE91A can withstand repetitive surges of up to 1.5kV without damage. It also features a fast clamp response time of around 1.0ns for 15A pulses of 8/20μs duration. This ensures that the diode responds quickly and effectively to suppress voltage transients, minimizing the risks of damage to connected circuits.The MA1.5KE91A is widely used due to its high surge current capability, low breakdown voltage, and fast clamp response time. It is a reliable protection device for a wide variety of applications, due to its superior performance in clamping voltage transients. The diode offers excellent protection against high voltage transients, making it an ideal choice for protecting sensitive electronic circuits.

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