V421NA34

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS (transient voltage suppressors) or varistors are engineered to deliver a high maximum thermal capacity over a wide temperature range. MOVs (metal oxide varistors) also provide overvoltage protection, commonly referred to as surge protection. This article examines the V421NA34 model application field and working principle.The V421NA34 model is positioned as a mid-level varistor designed to reduce exposure to lightning overvoltage surges. It is designed to provide overvoltage protection while not generating too much heat or current. It is suitable for AC or DC circuits, as well as pulsed applications, making it extremely versatile.The core component of the V421NA34 is a varistor known as a Metal Oxide Varistor (MOV). This is a diode-conductive ceramic material capable of withstanding exceptionally high voltages. In the V421NA34, it is used in a series configuration combining two MOVs in parallel. This protects against high transients by allowing the voltage to flow through, resulting in a minimal amount of energy dissipating into the varistor material itself.The MOV is triggered when the voltage reaches a specific threshold. When this happens, the device conducts and limits the voltage, thus reducing the risk of electrolysis, overheating, or circuit damage. The V421NA34 has a higher breakdown voltage than most other MOVs, and it can withstand a wide temperature range without becoming inoperative.The V421NA34 is rated for a maximum capacitance of 12 pF and a maximum operating temperature of +125°C. The device has a nominal DC voltage rating of 12V, and a surge voltage rating of 35V @ 10 Ω. It is rated to protect delicate circuits from both direct (thermal) over-voltage and indirect (electrical) over-voltages. It is designed to be used in an environment with limited air flow, such as a telecoms equipment rack, server room, or a TV/turner box.Essentially, the V421NA34 model is designed to protect against both thermal and electrical transient voltage surges. The MOV component of the device is designed to divert voltage away from critical components by conducting the unwanted voltage away from the circuit. This allows for additional protection from both direct and indirect surges.The V421NA34 model is a valuable component for any electrical system. It is relatively inexpensive, easy to use and highly effective in preventing damage caused by transient voltage surges. With its ability to effectively withstand a wide range of temperatures and frequencies, the V421NA34 is an excellent choice for providing reliable protection against sudden voltage fluctuations.

The specific data is subject to PDF, and the above content is for reference