V47MA2A

Varistor Voltage (Typ):	47V
Package / Case:	SOD-83A Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	210pF @ 1MHz
Number of Circuits:	1
Energy:	0.19J
Current - Surge:	40A
Varistor Voltage (Max):	57V
Series:	MA
Varistor Voltage (Min):	37V
Maximum DC Volts:	34V
Maximum AC Volts:	27V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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The V47MA2A is a voltage-dependent, nonlinear resistor that is used as a protection component in electronic circuits. It can protect sensitive devices such as integrated circuits from overvoltage and power surges. The device is also known as a metal oxide varistor (MOV) or surge protection device (SPD).The V47MA2A is a two-terminal varistor that is constructed of a ceramic material with a special granular zinc-oxide (ZnO) filling. The ZnO within the ceramic structure exhibits a nonlinear voltage-current characteristic which makes it an ideal device for protection applications. The V47MA2A is designed to conduct excessive current when the applied voltage exceeds a certain threshold. This threshold is referred to as the “trip” voltage, which is usually designed to be between the normal operating voltage range of circuit components and the maximum allowed voltage. When the V47MA2A is exposed to a sufficient overvoltage, it triggers a nonlinear change in its electrical properties which results in a rapid increase in conductive current. This current acts as a short circuit which quickly dissipates any excess energy which may be damaging to the protected circuitry. The device basically “shorts out” the excessive energy, in turn eliminating the damaging effects of the surge. The V47MA2A is commonly used in applications where a surge protection component is needed, such as in telecom systems, power supply, and audio/video equipment. It is especially useful in protecting sensitive components from the effects of electrostatic discharge (ESD) and lightning. The device’s ability to dissipate a huge amount of energy in a very short interval makes it an attractive choice for these applications.The V47MA2A has a wide range of operating voltages, ranging from 14V to 275V, and a wide dynamic resistance range of 0.002 Ω to 0.08 Ω. This allows it to be used in a variety of protection applications. The device also has a low leakage current, making it ideal for circuits with low power consumption. The V47MA2A is designed to clamp the overvoltage to a safe level, and then allow the current to flow. This allows the protected device to remain completely operable during and after a surge or surge event. The device is also designed to operate in a wide temperature range, from -40°C to 125°C. This makes it suitable for a variety of applications, including automotive, military, and industrial. In summary, the V47MA2A is a two-terminal varistor which is designed to protect sensitive circuits from the damaging effects of overvoltage and power surges. It is constructed of a ceramic material with a granular ZnO filling, and is designed to run in a wide temperature range. The device has a wide dynamic resistance range and a low leakage current, making it an attractive choice for surge protection applications.

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