The word "varistor" is derived from variable resistor. A number of different coding systems are used, but the most widely used utilises three numbers consisting of two significant figures and a multiplier. Three figure SMD resistor marking code . Varistors(SMD) Countermeasure for Surge and Static Electricity AVR Series AVR-M, AVRL Types Varistor (Variable resistor) is a nonlinear resistive element of the ... Varistor voltage and TDK internal code SHAPES AND DIMENSIONS/RECOMMENDED PC BOARD PAT-TERN Dimensions in mm So peak voltage is 308V = 220V x 1.4 (VPeak = VRMS × √2) This MOV 10D471K is having 300V AC RMS rating. Marking codes. Varistors act as capacitors too, but the values generally differ from what would be expected of a capacitor with the same marking. 1.5 Equivalent circuits Figure 5 shows the simplified equivalent circuit of a metal oxide varistor. Dimensional drawing in mm Type Name Ordering Code MT30K150M4 B72230M0151M401 MT30K320M4 B72230M0321M401 MT30K385M4 B72230M0381M401 Marking code 7 Brightking Logo 8 Varistor Voltage XXX Y: UL Accreditation Logo XXXKDXX 7 8 9:; < 9 CS A cred ita on L g; Disk Size < Internal control code Quantity Packaging Dimensions (Unit: mm) Quantity Bulk 252 Max. Let me explain The AC mains you get said 220V RMS. Ordering code Marking on varistor Marking on label Metal-Oxide Varistors (MOVs) Radial Lead Varistors > LA Varistor Series Part Number Branding Model Size Disc Dia. In this system the first digits indicate the … The 4-digit code. Visual Inspection. A varistor is an electronic component with an electrical resistance that varies with the applied voltage. High Energy types are available in the 25, 32, 40, 60 and 80 mm versions. Si-Varistor Silicon voltage depending resistor Si-npn Silicon npn transistor Si-n/p Silicon npn and pnp transistors area ... A weekly updated online database that includes now more 240.000 marking codes for different SMD and leaded, passive and active electronic components like fuses, diodes, thyristors, transistors and integrated circuits. One of the problems with SMD components is the lack of a marking standard, but most will always have capacitance and voltage rating + a manufacturer code or series number. 5x20mm IEC Fuse Marking. Withstanding Surge Current The maximum current within the varistor voltage change of ±10% with the standard impulse current (8/20μs) applied one time. Marking Marking is able to be read easily. Also known as a voltage-dependent resistor (VDR), it has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode.In contrast to a diode however, it has the same characteristic for both directions of traversing current. The standard range of varistors with radial leads covers the diameters of 5, 7, 10, 14, 18 and 20 mm. Marking code XXX Y XXXKXXX 7 8 9:; < = 7 Brightking Logo 8 Varistor Voltage 9 UL Accreditation Logo: Disk Size; Different internal structure (M / E / N) < Product Line Code (³ < ´ P D\ EH $ (a) thru Z(z)) = Date Code Quantity Packaging Dimensions (Unit: mm) Quantity Bulk 252 Max. Sample schematic diagram 17. Frequency : 1±0.1kHz Test Voltage : 1±0.2 V(rms) 7.4 Insulation Resistance(I.R.) The maximum DC voltage that can be applied continuously in the specified environmental temperature range. reading varistor codes Hi Everyone, I am currently trying to understand how to used a Triacs for AC control application and come across this component which is call a varistor. General technical information Please read Important notes Page 5 of 22 and Cautions and warnings. 66 Max. Test Voltage : Rated Voltage Time : 30±5 minutes through a suitable resistor 1MΩ. Many users ask us that MOV says marking as 470V so how is it suitable for 220V application. "B" is a 4.7nF capacitor rated at 2kV. Varistors provide over voltage protection to electrical and electronic circuits in contrast to circuit breakers or fuse which provide protection to circuits from over current. Metal Oxide Varistor:TVR-V Series Disc Type Varistor for Surge Protection (Medium Surge Series) THINKING ELECTRONIC INDUSTRIAL Co., LTD. 41 www.thinking.com.tw 2018.12 All specifications are subject to change without notice. Case drawings 19. The lead going diagonally across the face makes MOV the most likely. Artikelnummer / part number :Datum / Date :2006-06-29Bezeichnung :description :DIAM:10MMROHS CompliantA Elektrische Eigenschaften / electrical properties : datasheet search, datasheets, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, … NO. 7.3 Capacitance and Tolerance Meet item 3. Look around at likely parts on their web site. Varistor Voltage Temp. Metal Oxide Varistor B72230M ***M401 Thermal Protective Varistor MT30*** PPD VAR PD 2020-01-10 Please read Cautions and warnings and Page 3 of 10 Important notes at the end of this document. VDR Varistor 05D SERIES MARKING CODE 1SongLong Lishang Logo 2Disk Size 3CUL Accreditation Logo 4“Y” &“M” Product Line Code 5Varistor Voltage 6VDE Accreditation Logo 7Energy and frequency of combined wave “J” is High Surge Code,not “J” is Standard Surge “H” is … It's similar to the previous system, the only difference is the number of significant digits: the first three numbers will tell us the significant digits, and the fourth will be the multiplier, indicating the power of ten to which the three significant digits must be multiplied (or how many zeros to add). PRODUCT TYPE MODEL CITATION REVISION TOTAL PAGES RELEASED DATE. Please see the attached file. ITEM Main Material Coating Material Marking Appearance Zinc Oxide Epoxy Resin GNR, Part number, UL, CSA(or CUL) and VDE recognized component mark, Date code 200pcs/bag 2bags/box Coefficient V 1mA@125℃-V 1mA@25℃ V 1mA@25℃ × 1 100 Varistor Voltage Test Methods: Environmental conditions under which every measuring is done without doubt on the measuring results. Timescope Varistor Voltage (@ 1mA DC) VDR Metal Oxide Varistors Standard ADDITIONAL RESOURCES ORDERING INFORMATION The varistors are available in a number of packaging options: •Bulk • On tape and reel • On tape in ammopack (fanfold) The basic ordering code for each option is given in tables titled Varistors on Tape on Reel, Varistors on Tape in Ammopack and Varistors in Bulk. 66 Max. The maximum energy within the varistor voltage change of ±10% when one impulse of 10/1000μs or 2ms is applied. For an interim period shipments can include varistors with old and new markings. The basic design of metal oxide varistors consists of Disc Varistors with Radial Leads and High Energy Varistors. For example: MDC Z131 20UL Where: MDC - Company Initials Z - Zinc Oxide Varistor 131 - AC Voltage rating (130VAC) 20 - Rating code UL - UL recognition, if applicable Due to updated CSA standard, the marking will be changed on EPCOS varistors and labels that are produced from October 1, 2019. STANDARD MARKING Minimum marking shall consist of an abbreviated style designation and, when space is available, the manufacturer’s initials or company logo. Affected are the B721*, B722*, B723* and B726* series of varistors. 7.5 Varistor … It could be a MOV (metal oxide varistor), but other component types are possible too. Find the number code on the part and check to see if the device capacitance is a match. 1 6 0 M a x . AVAILABLE ON REQUEST (CUSTOM DESIGNS): The 4-digit code is used for marking precision surface mount resistors. 158 159 Electrical Characteristics 160 161 10-V Series 162 Part No. 60pcs/box (101K~511K) 32pcs/box (561K~162K) Unless specially, specified, temperature, relative humidity are 5 °C to 35 °C, 45 to 85% RH respectively. 1 6 0 M a x . Sometimes a 3 digit coding system similar to smd resistor coding is used. When the resistors are marked, figures are used rather than the colour codes used in leaded components. The bottom line of text indicates it was made by TDK. Affected products . "A" is a metal oxide varistor, a device that protects a circuit from excessive voltage and voltage spikes from the mains supply. So its … I am quite curious about this component and would like to seek further advise from anyone of you who have been using the varistor component. Then just rule out what could be what. Potentiometers values are often marked with a readable string indicating the total resistance, such as "100k" for a 100 kOhm potentiometer. SMD-code marking style 16. Marking Code VDE X XXX H Y XXXKDXXX ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ① Brightking Logo ② Varistor Voltage ③ UL Accreditation Logo ④ CSA Accreditation Logo ⑤ VDE Accreditation Logo ⑥“J”is High Surge Code, no“J”is Standard Surge ⑦ Disk Size ⑧“H”is Halogen Free Code, no“H”is Halogen Varistor is a passive nonlinear two terminal solid state semiconductor device. M etal O xide V aristOrsWORLD PRODUCTS INC. 19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.comRev. Marking Code VDE X XXX H Y XXXKDXXX ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ① Brightking Logo ② Varistor Voltage ③ UL Accreditation Logo ④ CSA Accreditation Logo ⑤ VDE Accreditation Logo ⑥“J”is High Surge Code, no“J”is Standard Surge ⑦ Disk Size ⑧“H”is Halogen Free Code, no“H”is Halogen Additional SMD info 18. What is the fuse marking according to IEC standard 127 and how does this translates to Littelfuse's 5x20mm fuse offerings? 10D470K Varistor SPECIFICATIONS. 7.2. Littelfuse_5x20mm-IEC-Fuse-Cap-Marking_guide.pdf This one clamps at 150v ac or about 220v dc and is usually located after the fuse between Live and Neutral, (Hot and Cold in America), in a power supply. Manufacturers logos and URL Toronto, 2019 edition ... 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