The quality column will be the most interesting and the most concerned by new customers!The following are the main explanations of important technical parameters:

Insulation resistanceas the name implies, is the resistance of IR.Insulation. Infrared rays can actually protect electrical equipment from short circuits. IR valuUsually very high in the megaohm or megaohm range. The temperature coefficient depends on whether the dielectric is Class 1 or Class 2. pottery and porcelainCapacitors (especially two-stage capacitors) usually have higher dissipation factor and higher frequency dissipation coefficient. Dissipation coefficient (tanδ)or DF is defined as the ratio of ESR to capacitance reactance. It is the tangent of the dissipation factor, also known as the loss angle, and is usually expressed as a percentage.The accepted standard indicates the dissipation factor of aluminum at a specific frequency, usually 120Hz.Electrolytic and tantalum capacitors, and for thin film capacitors, it is 1 kHz, and for ceramic capacitors, it is 1 MHz. Partial discharge (PD)It is a small part of conductive electrodes.PD bridging the insulation by discharge or spark. PD can appear in the electric field of the insulation system, where two strengths between any points exceed the partial insulation material. The breakdown strength of PD can occur in the electrode of solid insulation in the gap, and bubbles are internally insulated by liquid or ambient gas (corona activity) due to pollutants or irregular surfaces across the insulation material. Insulation material： Letter (low temperature)Digital (high temperature)Letter (other cities)X = &minus;55&deg;C（&minus;67&deg;F）2 = +45&deg;C（+113&deg;F）E =&plusmn;4.7％Y = &minus;30&deg;C（&minus;22&deg;F）4 = +65&deg;C（+149&deg;F）F =&plusmn;7.5％Z = +10&deg;C（+50&deg;F）5 = +85&deg;C（+185&deg;F）P =&plusmn;10％ 6 = + 105&deg;C（+221&deg;F）R =&plusmn;15％ 7 = + 125&deg;C（+257&deg;F）S =&plusmn;22％ 8 = + 150&deg;C（+302&deg;F）T = +22-33％  U = +22&minus;56％  V = +22-82％For example, the operating temperature range of Z5U capacitor is+10 C to+85 C, and the capacitance variation is+22% to-56% at most. The working temperature range of X7R capacitor is −55°C to+125 C, and the maximum capacitance change is 15%.HVC's N4700 dielectric material: similar to other companies, electric porcelain determines the main characteristics of the hat. It took HVC three years and millions of dollars to invent N4700 strontium titanate.N4700 material has very good high frequency characteristics, excellent huge insulation resistance, minimal dissipation factor and ultra-long service life up to 20 years.  Technical specification comparison:In order to let customers know more about HVC projects, we compare the technical specifications of HVC with different existing technologies. The brands come from Europe and North America and talk about the United States.  Polynesian brand ê ******Only the ceramic disk cover is provided, which is the same as the dielectric material X5F of HVC.The dissipation factor X5F is 1.5%;The "dissipation factor" value of X5F component of HVC can be 1%.The highest possible voltage is shown in the catalogue of 30Kv and 2200pf;The product catalogue of HVC (conventional production) is 50Kv and 3300pf.The rated voltage flash memory test is 130%, like 30Kv, and the flicker test is 40KvDc.The dielectric strength of HVC can be 150% to 200%, which means that when the rated voltage is 30Kv, it can withstand the flash test of 45Kv to 60 kV VDC.Temperature characteristics: (NP0 to Z5U)Temperate characteristics of HVC: (N4700, Y5T, Y5U)European brand copy * * * * *：The price quoted is only the door handle capacitance.The maximum capacity of 10Kv is 8000pf, and HVC is the same 8000pf, and the same N4700 type material;The maximum capacity of 20kv is 4000pf, while HVC can be 10000pf.The maximum capacity of 30kv is 2700pf, while that of HVC is 3300pf.The maximum capacity of 40kv is 2000pf, while the HVC is the same 2000pf;The maximum capacity of 50kv is 1700pf, while that of HVC is 15000pf(Y5V) and 5000pf(Y5T).G * * * * *: Using N4700 material, the loss factor is less than 0.3%, while HVC always exists at 0.1%, never higher than 0.2%.G * * * * *: The insulation resistance is 10,000mOhm(N4700) minutes, while that of HVC is 200,000mOhm(N4700) minutes most of the time.Popular American brands * *:Quote only door handle capacitors, which are widely used in Polynesia in the North American market.For unknown dielectric materials, the maximum tangent of loss angle is 0.5%, while HVC majorly uses N4700 dielectric materials, and the loss factor is only XNUMX％% to 0.1%, and most of the time it is only 0.2%. North American famous brand H **:Widely sold in North America, Russia, Japan and other places.Capacitors and door handle capacitors.For ceramic disc caps, only Y5P and Y5U dielectric materials are available, and their temperature coefficients are not very good, while HVC quotes N4700 ceramic disc caps.Availability of the highest voltage capacitor, H*** shows 20Kv 4700pf(Y5U), while HVC provides 50KV 3300pf(Y5T).The minimum insulation resistance is 1000mOhm, while the IR of HVC can be 10mOhm, and the maximum dissipation coefficient is 5% (Y5p), while the maximum DF of HVC is 2% (Y5U, Y5V). European brand medium * * * *:World-famous company, providing different range of door handle capacitors, Y5U and insulation material N4700 grade. This big-name product pays great attention to partial discharge value, and their project may have a low AC voltage in rating, while HVC provides almost the same low pC quality level.Partial discharge value < 5pC @ AC rated voltage. And HVC can be the same < 5pC under similar conditions.N4700 material, insulation resistance > =1011 ohms, while HVC's own N4700 material should be doubled, with a minimum of 2x1011 ohms. Japan's world famous brand T **:This manufacturer is a world-class manufacturer of passive components, with a considerable production capacity.In factories all over the world, they also produce door handle capacitors and invented their own ceramic materials.Z5T, Y5P, Y5S, which only have soso temperature coefficient, have no N4700 material grade, and provide high frequency and high dielectric strength functions. Even more Y5S is a material without PB.However, to comply with RoHS "EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium and certain bromine-based flame retardants, PBB and PBDE, are not used except exempted applications" for high-voltage applications, and lead-free is not required. However, some serious customers cannot use lead-free products. The maximum voltage capacitance is only 50kv 2100pf, but 20kvAC 1080p can be seen, which can be roughly equal to 80kvDC.Although HVC can now manufacture 150kvDc(50kvAC) and 800pf products, our HVC has higher production capacity and can meet the higher-end application requirements.The insulation resistance is 100,000mOhm min, and the maximum IR of HVC is twice as low as that of 200,000mOhm. Price comparison is HVC and others.：From the above, we know that the quality level of HVC is quite high. We are among the world-famous brands Vishay, TDK, Murata, Morgan, etc … and we believe that the overall cost can be reduced by 20% to 30%. HVC and others of delivery date comparison：The standard production lead time of HVC door handle capacitors is 60 days (8 weeks), while it usually takes several weeks for top brands. More flexible HVC and others：HVC capacitors also provide flexible types of components, such as GIS (Gas Insulated Switchgear) customers.Usually, a small size of high capacitance is needed, and we provide unpackaged capacitance to meet strict requirements. Other manufacturers who are not as flexible as us may require a considerable quantity.