ROV20H121K-S-2

Varistor Voltage (Typ):	120V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TA)
Capacitance @ Frequency:	3800pF @ 1kHz
Number of Circuits:	1
Energy:	88J
Current - Surge:	10kA
Varistor Voltage (Max):	132V
Series:	--
Varistor Voltage (Min):	108V
Maximum DC Volts:	100V
Maximum AC Volts:	75V
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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The ROV20H121K-S-2 is a TVS - Varistors, MOVs. The device is designed to protect critical electronic circuits from transient voltage events, and effectively transfers large energy from the circuits to protect them from damage. The device features high non-linearity, fast response to lightning surge conditions, and low capacitance for multi-buck and multi-boost applications. Applications of ROV20H121K-S-2 include telecom/data lines, lightning surge protective devices, automotive, industrial, and medical applications. The high capacitance values ensure protection of components from EMI/RFI. The device also has excellent capability to absorb massive energy. The low capacitance is an advantage in applications in AC power lines where there is potential for large voltage transients.How ROV20H121K-S-2 WorksWhen a high voltage transient event occurs, TVS - Varistors, MOVssuch as the ROV20H121K-S-2 begin to conduct current through their semiconducting material. This flow of current induces a low impedance across the device, which, in turn, limits the voltage between its two electrical terminals. This travel of current also produces a localized increase in the temperature of the device’s semiconductor material. This thermal energy limits the protection provided by the device and eventually dissipates as the transient passes. Once the transient voltage exceeds the specified break-over voltage, the MOV acts as an open circuit so the surge current is diverted. The MOV\'s capacitance further improves its surge protection capability by storing the energy generated by the transient and then sharing it with associated circuit components, such as ICs and transistors. The MOV acts as a buffer in surge protection scenarios. The components of the ROV20H121K-S-2 include two electrodes, a semiconductor material, and an over-voltage protection element with a triac. It is configured with a Zener diode that limits the current delivered to the triac. This limitation ensures that the triac is not driven into a continuous conduction region.ROV20H121K-S-2 has a surge current rating of 20A and a maximum working voltage of 121kV, ensuring reliable protection from transients. It has a low capacitance rate and a response time of less than 1ns, making it ideal for multi-buck and multi-boost applications. It also has excellent ESD protection capability. In summary, the ROV20H121K-S-2 TVS - Varistors, MOVs offer a variety of features and benefits for industrial and medical applications. With its fast response time, high surge current rating, excellent ESD protection and low capacitance, the device is an invaluable component for transient voltage protection.

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