Select varistor
Varistor is a pressure limiting protection device. Can absorb excess voltage, protection of sensitive components in the circuit.
There are many reasons for choosing a varistor.The response time of the varistor is ns level, its response speed, to meet the electronic circuit over-voltage protection requirements. Varistor is mainly used in transient overvoltage protection, similar to the voltammetric characteristics of a semiconductor regulator. Its protection characteristics, impact resistance characteristics of long life, working voltage life, stable performance. Varistor is widely used in household appliances and other electronic products, for over-voltage protection, lightning protection, suppression of inrush current, absorption peak pulse, voltage limiter, high voltage interrupter, noise reduction, the protective effect of semiconductor components and the like.
What is the varistor
The main material of the varistor is the metal oxide (mov), it contains ceramic blocks consisting of zinc oxide particles and a small amount of other metal oxides or polymers. A resistive device having a non-linear voltammetric characteristic, varistor referred to as vdr, the varistor is called a "surge absorber" sometimes referred to as "surge suppressor.
Now the "zinc oxide" (zno) varistor, its main material has divalent elements zinc (zn) and hexavalent element oxygen (o) formed. Mainly used in the circuit to withstand overvoltage when the voltage clamp, absorb the excess voltage to protect sensitive devices.
Characteristics of varistor
Variable resistance voltage range: 18v-1800v
A variety of surge capacity: standard, high surge,
Ultra-high surge
High current handling and energy absorption capacity
Monomer flow can reach 70ka or even higher
Fast response time fast
Low leakage current
Applications: power systems, surge suppressors, security systems, motor protection, automotive electronics systems, household appliances.
JVA - Zinc Oxide Varistors Specifications Varistor Voltage (Threshold Voltage) 18V ~ 1800V JVA-Zinc-Oxide-Varistors Working Voltage (Max. Allowable Voltage) AC(rms) 11VAC ~ 1000VAC DC 14VDC ~ 1465VDC Peak Current for 8/20 S Current Wave General Type 100A ~ 6500A Hi-energy Type 250A ~ 10 000A Energy Range For 10/1000 S Current Wave General Type 0.4J ~ 625J Hi-energy Type 0.6J ~ 990J Operation Ambient Temperature Range -40 ~ +85 Storage Temperature Range -55 ~ +125 Insulation Resistance >1000 M Hi-Pot (Leads to Coating) 2500 VDC for 1 min. Typical Response Time
Zinc Oxide Min 86.5, 90 and 95%
Zinc >55%
We are a direct supplier of Zinc Oxide min 50% original of Vietnam, C/O is provided.Quantity available: 3,000 Ton/ Month, Payment: T/T or L/C, Looking for a serious buyer from worldwide
Zinc Oxide Potential Functions: Cosmetics & Sports Nutrition Potential Functions: Colourant Thickener Potential Applications: Bakery Paints Seasonings Cereals Personal Care Skin Care Confectionary Protein Drinks Snack Foods Dairy Protein Powders Metal Finishing Ready Meals
Zinc oxide is white powder, with good hiding power and tinting power, widely used in printing & dyeing, rubber, coating, ceramics, feeds, cosmetics, pharmacy,ink, cable, electronics, phosphor, catalysts. 1. The product has small particle size, large specific surface area, strong adhesion and hiding power, which can greatly improve the efficacy of the coating. 2. The product has a small proportion and is not easy to form precipitation in the use or final product. 3. The product also has the function of shielding ultraviolet rays, and can play an anti-aging role in the coating.
Zinc Oxide USP is mainly used in food industry as a dietary ingredient and as a nutrient. Zinc is an important antioxidant nutrient. It is necessary for protein synthesis, wound healing, for blood stability, normal tissue function, and aids in the digestion and metabolism of phosphorus. It also governs the contractility of muscles and maintains the body's alkaline balance. Zinc Oxide is also used in a variety of products like plastics, ceramics, glass, cement, rubbers, paints, pigments, lubricants, adhesives, sealants, batteries, ferrites, flame-retardant, and bandages. It is commonly used in personal care products like baby powders, diaper rash creams, calamine creams, antiseptic ointments, and anti-dandruff shampoos and sunscreens. It is used as an additive in the production of concrete, and as an additive in food products (breakfast cereals).USP, or United States Pharmacopeia, grade chemicals comply with the standards of the United States Pharmacopeia and National Formulary (USP-NF). USP Grade chemicals are fit for use in food, drugs, and medicines. They are subject to stringent testing and are typically required to have the highest level of purity. Specifications ZnO: 99.9 Min Lead Pb: 0.002 Max Cadmium Cd: 0.001 Max Iron Fe: 0.0005 Max Copper Cu : 0.0003 Max Tin Sn: 0.0001 Max Zinc Zn: 80.26 Min Manganese Mn: 0.0001 Max Chromium Cr: 0.0001 Max Cobalt Co:0.0001 Max Mercury Hg:0.0001 Max Molybdenum Mo:0.0001 Max Nickel Ni:0.0001 Max Selenium Se:0.0001 Max Meet USP Standard Packing 55.115 lb bag, 40 bags per pallet
use: 1, in the rubber and tire industry, zinc oxide is essential additives, can also be used natural rubber, synthetic rubber latex and vulcanizing agent and a reinforcing agent and a coloring agent. 2, in the chemical industry, zinc oxide is widely used as a catalyst, desulfurization agent, such as methanol synthesis catalyst, as when ammonia desulfurization agent. 3, in the paint industry, zinc oxide addition tinting strength and hiding power, is the paint preservatives and brightening agent 4, in the glass industry, zinc oxide used in specialty glass products. 5, in the ceramic industry, zinc oxide used as a flux. 6, in printing and dyeing industry, zinc oxide used as resists. 7, in the electronics industry, the main additive main raw material zinc oxide varistor is, but also magnetic, optical and other materials. Physical properties: non-toxic, odorless, white or yellowish, light powder, easily absorbing moisture. Molecular formula: ZnO Molecular weight: 81.39 (at 2011 international quality, pollution and acid exposure and atomic weight) Specifications: net weight 25KGS or 50KGS Packaging: Outsourcing color covered plastic woven bags lined with polyethylene film Storage: Avoid damage, moisture, contamination and contact with acids Export-related: Small 20-foot container loaded volume: 20 tons (free use of pallet) Customs code: 2817001000
use: 1, in the rubber and tire industry, zinc oxide is essential additives, can also be used natural rubber, synthetic rubber latex and vulcanizing agent and a reinforcing agent and a coloring agent. 2, in the chemical industry, zinc oxide is widely used as a catalyst, desulfurization agent, such as methanol synthesis catalyst, as when ammonia desulfurization agent. 3, in the paint industry, zinc oxide addition tinting strength and hiding power, is the paint preservatives and brightening agent 4, in the glass industry, zinc oxide used in specialty glass products. 5, in the ceramic industry, zinc oxide used as a flux. 6, in printing and dyeing industry, zinc oxide used as resists. 7, in the electronics industry, the main additive main raw material zinc oxide varistor is, but also magnetic, optical and other materials. Physical properties: non-toxic, odorless, white or yellowish, light powder, easily absorbing moisture. Molecular formula: ZnO Molecular weight: 81.39 (at 2011 international quality, pollution and acid exposure and atomic weight) Specifications: net weight 25KGS or 50KGS Packaging: Outsourcing color covered plastic woven bags lined with polyethylene film Storage: Avoid damage, moisture, contamination and contact with acids Export-related: Small 20-foot container loaded volume: 20 tons (free use of pallet) Customs code: 2817001000
