1.5KE51A-G Circuit Protection

Voltage - Clamping (Max) @ Ipp:	70.1V
Supplier Device Package:	DO-201
Package / Case:	DO-201AA, DO-27, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	21.4A
Series:	--
Voltage - Breakdown (Min):	48.45V
Voltage - Reverse Standoff (Typ):	43.6V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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TVS-Diodes: 1.5KE51A-G Application Field and Working Principle

TVS-diodes are high quality, high power semiconductor devices designed to protect sensitive electronic components and systems from damage caused by transients with high peak currents and high energy levels. The 1.5KE51A-G is a unidirectional, ultra-low capacitance, transient voltage suppression diode designed to protect sensitive semiconductor components from the damaging effects of electrostatic discharge (ESD). In this article, we will discuss the application field and working principle of the 1.5KE51A-G.

Application Field

The 1.5KE51A-G is specifically designed for use in a variety of harsh environments, including automobiles, aeronautical, and telecommunications systems. In these environments, its ultra-low capacitance ensures fast recovery and reliable overvoltage protection. It is ideal for use in systems where transient voltages may reach levels high enough to cause irreparable damage to sensitive components.

Working Principle

The 1.5KE51A-G operates using the principle of avalanche breakdown. When the junction of the diode reaches breakdown voltage, current begins to ‘avalanche’ through the diode, and a voltage limiting effect occurs. This voltage limiting effect reduces the voltage across the junction to a safe level, thus protecting the circuit from overvoltage. When the current across the junction reaches its maximum peak, the current is diverted through the diode, reducing the voltage to a safe level. Since the diode is not dissipating any power during this interim period, it does not heat up, thus preventing damage to the surrounding components.The 1.5KE51A-G is a versatile TVS-diode, designed to protect sensitive components from transient overvoltage. Its ultra-low capacitance allows fast recovery and reliable protection against dangerous overvoltage, making it ideal for use in a wide range of applications. It works using the principle of avalanche breakdown, enabling it to quickly limit the voltage across the junction and divert the current, preventing damage to sensitive components.

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