V175LA10A

Varistor Voltage (Typ):	270V
Package / Case:	Disc 14mm
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 85°C (TA)
Capacitance @ Frequency:	700pF @ 1MHz
Number of Circuits:	1
Energy:	55J
Current - Surge:	4.5kA
Varistor Voltage (Max):	297V
Series:	LA
Varistor Voltage (Min):	243V
Maximum DC Volts:	225V
Maximum AC Volts:	175V
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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V175LA10A Application Field and Working Principle

Transient voltage suppressors (TVS) have become increasingly important components in the world of electronics due to their ability to temporarily absorb and dissipate large pulses of current released from overvoltage utilities. This not only protects sensitive electronic components from damage caused by electrical surges, but also prevents false triggers or errors in logic circuits that could otherwise distort or invalidate data. The V175LA10A is a Metal-Oxide Varistor (MOV) specially designed to protect a wide range of applications from high-energy transients. It combines low leakage current with excellent clamping capability and surge protection over a wide range of frequency, voltage, and power levels.

What is a Varistor?

A varistor is a type of electronic component that acts like a variable resistor and is used for electrical protection against overvoltages and overcurrents. Varistors are also known as Varistor Suppressors, Voltage Dependent Resistors (VDRs), or surge protectors and are typically made from a ceramic material filled with particles of zinc oxide. When subjected to a higher voltage, the zinc oxide particles are attracted towards the terminals of the varistor, forming a low resistance between them. This effectively "clamps" the overvoltage and prevents it from harming any underlying circuitry.

Working Principle of the V175LA10A

The V175LA10A operates by means of a Zinc Oxide-based non-linear element. When a high voltage is applied across the varistor, the zinc oxide particles in it become polarized and form a remarkably low-resistance path between the two terminals of the varistor. This effectively limits the voltage and clamps it at a maximum value, which is determined by the resistance of the varistor at a particular given current.In the case of the V175LA10A, the maximum peak pulse current is rated at 10A while the maximum clamping voltage is 175V. This device is hence suitable for applications that require protection from high voltage transients. Furthermore, the V175LA10A offers lower than 5mα leakage current which ensures that the protected circuit is not affected by the protection.

Applications of the V175LA10A

With its excellent surge protection, the V175LA10A is suitable for a wide range of applications. It is commonly seen in TVs, solar power inverters, battery chargers, and other electronic devices where voltage overshoots and short-term current spikes occur. It is also used in automotive applications like engines and headlight control systems.One of the advantages of the V175LA10A is that it is a low cost varistor that provides excellent protection at a low cost point. This makes it an ideal solution for low-cost applications such as consumer electronics and toys.

Conclusion

In conclusion, the V175LA10A is an extremely efficient and reliable transient voltage suppressor (TVS) that can provide excellent protection against overvoltages and short-term surges. Its low-cost design makes it suitable for a wide range of applications, from TVs to automotive systems and consumer electronics. Its low leakage current also ensures that the protected circuit is not affected by the protection.

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