ROV05-270K-2

Varistor Voltage (Typ):	27V
Package / Case:	Disc 5mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	1073pF @ 1kHz
Number of Circuits:	1
Energy:	0.90J
Current - Surge:	100A
Varistor Voltage (Max):	29.7V
Series:	--
Varistor Voltage (Min):	24.3V
Maximum DC Volts:	22V
Maximum AC Volts:	17V
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

The ROV05-270K-2 is a surge protective device (SPD) that helps to prevent power supply and system failures due to power surges. It is a popular choice for many sensitive industrial, medical, and transport applications where fast response times and very high safety ratings are important. This particular model is capable of protecting against both fast transients (up to 20 kHz) and slow decay transients (such as lightning induced impulses). It works by using special metal oxide varistors (MOVs) and transient voltage suppressors (TVSs).

TVS and MOVs

TVSs and MOVs are both solid state components used to suppress or clamp transient voltage spikes. TVSs act very quickly, usually within nanoseconds, by conducting current away from the sensitive components in a circuit, thereby preventing damage. TVSs differ from standard zener diodes in that they can handle much higher power levels. MOVs, on the other hand, are designed to absorb energy and thereby limit the maximum voltage that can exist in a circuit. They take slightly longer to act, typically within a few microseconds, but once they start conducting, they have a much higher current capacity than a TVS.

Application field

The ROV05-270K-2 is ideally suited for surge protection in delicate industrial, medical, and transport applications. It is designed to protect against transient voltage spikes caused by both fast transients (such as electrostatic discharge) and slow decay transients (such as lightning induced impulses). It is frequently used in electronic systems and data transmission networks, as well as other applications where power supply and system failures due to power surges need to be prevented.

Working principle

The working principle behind the ROV05-270K-2 is one of a combination of TVSs and MOVs. When a voltage spike occurs, the TVSs act very quickly to conduct the excessive energy away from the sensitive components in the circuit, thus preventing damage. Simultaneously, the MOVs absorb the excess energy, thereby limiting the maximum voltage that can exist in the circuit and protecting it from damage. The combination of TVSs and MOVs provides a fast and reliable means of surge protection.

Conclusion

The ROV05-270K-2 is a popular surge protection device designed to provide fast and reliable protection from voltage spikes. It employs TVSs and MOVs to conduct energy away from sensitive components, while simultaneously limiting the maximum voltage that can exist in the circuit. It is ideal for industrial, medical, and transport applications, and is an efficient way to protect against both fast transients and slow decay transients.

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