Marking codes. A number of different coding systems are used, but the most widely used utilises three numbers consisting of two significant figures and a multiplier. 1.5 Equivalent circuits Figure 5 shows the simplified equivalent circuit of a metal oxide varistor. Marking Marking is able to be read easily. 60pcs/box (101K~511K) 32pcs/box (561K~162K) Look around at likely parts on their web site. 158 159 Electrical Characteristics 160 161 10-V Series 162 Part No. 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. "A" is a metal oxide varistor, a device that protects a circuit from excessive voltage and voltage spikes from the mains supply. So peak voltage is 308V = 220V x 1.4 (VPeak = VRMS × √2) This MOV 10D471K is having 300V AC RMS rating. 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). Potentiometers values are often marked with a readable string indicating the total resistance, such as "100k" for a 100 kOhm potentiometer. Affected products . 200pcs/bag 2bags/box Visual Inspection. High Energy types are available in the 25, 32, 40, 60 and 80 mm versions. Varistors act as capacitors too, but the values generally differ from what would be expected of a capacitor with the same marking. 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. Please see the attached file. The 4-digit code is used for marking precision surface mount resistors. 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, … Coefficient V 1mA@125℃-V 1mA@25℃ V 1mA@25℃ × 1 100 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. NO. Littelfuse_5x20mm-IEC-Fuse-Cap-Marking_guide.pdf 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 … Additional SMD info 18. Many users ask us that MOV says marking as 470V so how is it suitable for 220V application. The word "varistor" is derived from variable resistor. Find the number code on the part and check to see if the device capacitance is a match. Unless specially, specified, temperature, relative humidity are 5 °C to 35 °C, 45 to 85% RH respectively. 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. 66 Max. the codes of 2 leaded length Blank Bulk Product Type TVR THINKING Varistor series 241 Body Size 07 Φ 7mm 10 Φ10mm 14 Φ14mm Φ20mm Varistor Voltage(V 1mA) 180 18x100V=18V 24x101V=240V 102 10x102V=1000V Tolerance of 1mA K ±10% R S Straight lead, epoxy coating Y kink lead, epoxy coating T L kink lead, epoxy coating Internal Control Code 01~ZZ The standard range of varistors with radial leads covers the diameters of 5, 7, 10, 14, 18 and 20 mm. The basic design of metal oxide varistors consists of Disc Varistors with Radial Leads and High Energy Varistors. Varistor Voltage Test Methods: Environmental conditions under which every measuring is done without doubt on the measuring results. 7.3 Capacitance and Tolerance Meet item 3. STANDARD MARKING Minimum marking shall consist of an abbreviated style designation and, when space is available, the manufacturer’s initials or company logo. Frequency : 1±0.1kHz Test Voltage : 1±0.2 V(rms) 7.4 Insulation Resistance(I.R.) 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 Varistors (MOVs) Radial Lead Varistors > LA Varistor Series Part Number Branding Model Size Disc Dia. The lead going diagonally across the face makes MOV the most likely. The bottom line of text indicates it was made by TDK. Test Voltage : Rated Voltage Time : 30±5 minutes through a suitable resistor 1MΩ. 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. Dimensional drawing in mm Type Name Ordering Code MT30K150M4 B72230M0151M401 MT30K320M4 B72230M0321M401 MT30K385M4 B72230M0381M401 A varistor is an electronic component with an electrical resistance that varies with the applied voltage. 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. AVAILABLE ON REQUEST (CUSTOM DESIGNS): Then just rule out what could be what. General technical information Please read Important notes Page 5 of 22 and Cautions and warnings. For an interim period shipments can include varistors with old and new markings. 5x20mm IEC Fuse Marking. The maximum energy within the varistor voltage change of ±10% when one impulse of 10/1000μs or 2ms is applied. Sometimes a 3 digit coding system similar to smd resistor coding is used. 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. Timescope Varistor Voltage (@ 1mA DC) Three figure SMD resistor marking code . 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 Affected are the B721*, B722*, B723* and B726* series of varistors. Let me explain The AC mains you get said 220V RMS. What is the fuse marking according to IEC standard 127 and how does this translates to Littelfuse's 5x20mm fuse offerings? 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 Manufacturers logos and URL Toronto, 2019 edition ... Si-Varistor Silicon voltage depending resistor Si-npn Silicon npn transistor Si-n/p Silicon npn and pnp transistors area So its … 1 6 0 M a x . 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. Sample schematic diagram 17. "B" is a 4.7nF capacitor rated at 2kV. 7.5 Varistor … 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 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 PRODUCT TYPE MODEL CITATION REVISION TOTAL PAGES RELEASED DATE. Varistor is a passive nonlinear two terminal solid state semiconductor device. The 4-digit code. Case drawings 19. Marking of CU varistors For further information please refer to the corresponding data sheet. 66 Max. When the resistors are marked, figures are used rather than the colour codes used in leaded components. 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. Varistors, also called metal-oxide varistors (MOVs), are used to protect sensitive circuits from a variety of overvoltage conditions. In this system the first digits indicate the … 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. 10D470K Varistor SPECIFICATIONS. 7.2. Ordering code Marking on varistor Marking on label 1 6 0 M a x . 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. SMD-code marking style 16. Varistor Voltage Temp. The maximum DC voltage that can be applied continuously in the specified environmental temperature range. 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. It could be a MOV (metal oxide varistor), but other component types are possible too. 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