The EPCOS B72225S4581K101 is a high-performance through-hole mounted varistor designed for circuit protection applications. Manufactured in China (COO: CN) by EPCOS, a TDK Group company, this leaded metal oxide varistor (SIOV) series offers reliable surge current handling and voltage clamping capabilities to safeguard electronic circuits against transient voltage spikes.
Key Features
High surge current rating up to 20 kA, suitable for demanding surge protection scenarios
Wide operating voltage range from 130 V RMS to 750 V RMS
Very high energy absorption capacity of 800 Joules
UL approval to UL 1449 (file number E321126 – exception 580 V)
Compliance with IEC, CSA, VDE standards
Epoxy resin coating with UL 94 V-0 flame retardant properties
Lead terminals: tinned wire for reliable electrical connection
Note: Please review cautions and warnings in the datasheet before installation. For detailed specifications and application guidance, refer to the provided datasheet link.
{"id":10026129195325,"title":"B72225S4581K101","handle":"b72225s4581k101","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EPCOS B72225S4581K101 is a high-performance through-hole mounted varistor designed for circuit protection applications. Manufactured in China (COO: CN) by EPCOS, a TDK Group company, this leaded metal oxide varistor (SIOV) series offers reliable surge current handling and voltage clamping capabilities to safeguard electronic circuits against transient voltage spikes.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh surge current rating up to 20 kA, suitable for demanding surge protection scenarios\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range from 130 V RMS to 750 V RMS\u003c\/li\u003e\n\u003cli\u003eVery high energy absorption capacity of 800 Joules\u003c\/li\u003e\n\u003cli\u003eUL approval to UL 1449 (file number E321126 – exception 580 V)\u003c\/li\u003e\n\u003cli\u003eCompliance with IEC, CSA, VDE standards\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eLead terminals: tinned wire for reliable electrical connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Ratings (TA = 105°C)\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum RMS Voltage (V RMS)\u003c\/td\u003e\n\u003ctd\u003e130 ... 750 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum DC Voltage (V DC)\u003c\/td\u003e\n\u003ctd\u003e170 ... 1060 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Surge Current (8\/20 µs, 1 time A)\u003c\/td\u003e\n\u003ctd\u003e20,000 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Surge Current (8\/20 µs, 15 times A)\u003c\/td\u003e\n\u003ctd\u003e10,000 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Energy W max (2 ms)\u003c\/td\u003e\n\u003ctd\u003e185 ... 1025 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power P max\u003c\/td\u003e\n\u003ctd\u003e1.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical Characteristics (at 25°C)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV v (1 mA) V\u003c\/th\u003e\n\u003cth\u003e∆V v (1 mA) %\u003c\/th\u003e\n\u003cth\u003ev c,max (i) c V\u003c\/th\u003e\n\u003cth\u003ei c A\u003c\/th\u003e\n\u003cth\u003eC typ (1 kHz) pF\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4581K101\u003c\/td\u003e\n\u003ctd\u003e940 V\u003c\/td\u003e\n\u003ctd\u003e±10%\u003c\/td\u003e\n\u003ctd\u003e1580 V\u003c\/td\u003e\n\u003ctd\u003e150 A\u003c\/td\u003e\n\u003ctd\u003e1650 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical Dimensions \u0026amp; Weight\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal Diameter (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003ctd\u003e5.2 ... 22.2 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDimensional Drawings\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003e±\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ee\u003c\/td\u003e\n\u003ctd\u003e12.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ea (typical)\u003c\/td\u003e\n\u003ctd\u003e3.4 ... 6.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ew max\u003c\/td\u003e\n\u003ctd\u003e27.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eth max\u003c\/td\u003e\n\u003ctd\u003e5.7 ... 11.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eh max\u003c\/td\u003e\n\u003ctd\u003e31.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003el min\u003c\/td\u003e\n\u003ctd\u003e25.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ed\u003c\/td\u003e\n\u003ctd\u003e±0.05 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePackage Type: Black (BLK)\u003c\/li\u003e\n\u003cli\u003eUOM: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4581k101.pdf\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Please review cautions and warnings in the datasheet before installation. For detailed specifications and application guidance, refer to the provided datasheet link.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-15T01:48:23+05:30","created_at":"2025-08-15T01:48:25+05:30","vendor":"Waldom Electonics","type":"Circuit Protection","tags":["780V","Circuit","EPCOS","IMPORT_CSV","Varistors","WLDM"],"price":40191,"price_min":40191,"price_max":40191,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50621555900733,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B72225S4581K101","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"B72225S4581K101","public_title":null,"options":["Default Title"],"price":40191,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"B72225S4581K101","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/53136593.jpg?v=1755202705"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/53136593.jpg?v=1755202705","options":["Title"],"media":[{"alt":null,"id":45844307673405,"position":1,"preview_image":{"aspect_ratio":1.0,"height":420,"width":420,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/53136593.jpg?v=1755202705"},"aspect_ratio":1.0,"height":420,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/53136593.jpg?v=1755202705","width":420}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EPCOS B72225S4581K101 is a high-performance through-hole mounted varistor designed for circuit protection applications. Manufactured in China (COO: CN) by EPCOS, a TDK Group company, this leaded metal oxide varistor (SIOV) series offers reliable surge current handling and voltage clamping capabilities to safeguard electronic circuits against transient voltage spikes.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh surge current rating up to 20 kA, suitable for demanding surge protection scenarios\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range from 130 V RMS to 750 V RMS\u003c\/li\u003e\n\u003cli\u003eVery high energy absorption capacity of 800 Joules\u003c\/li\u003e\n\u003cli\u003eUL approval to UL 1449 (file number E321126 – exception 580 V)\u003c\/li\u003e\n\u003cli\u003eCompliance with IEC, CSA, VDE standards\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eLead terminals: tinned wire for reliable electrical connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Ratings (TA = 105°C)\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum RMS Voltage (V RMS)\u003c\/td\u003e\n\u003ctd\u003e130 ... 750 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum DC Voltage (V DC)\u003c\/td\u003e\n\u003ctd\u003e170 ... 1060 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Surge Current (8\/20 µs, 1 time A)\u003c\/td\u003e\n\u003ctd\u003e20,000 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Surge Current (8\/20 µs, 15 times A)\u003c\/td\u003e\n\u003ctd\u003e10,000 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Energy W max (2 ms)\u003c\/td\u003e\n\u003ctd\u003e185 ... 1025 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power P max\u003c\/td\u003e\n\u003ctd\u003e1.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical Characteristics (at 25°C)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV v (1 mA) V\u003c\/th\u003e\n\u003cth\u003e∆V v (1 mA) %\u003c\/th\u003e\n\u003cth\u003ev c,max (i) c V\u003c\/th\u003e\n\u003cth\u003ei c A\u003c\/th\u003e\n\u003cth\u003eC typ (1 kHz) pF\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4581K101\u003c\/td\u003e\n\u003ctd\u003e940 V\u003c\/td\u003e\n\u003ctd\u003e±10%\u003c\/td\u003e\n\u003ctd\u003e1580 V\u003c\/td\u003e\n\u003ctd\u003e150 A\u003c\/td\u003e\n\u003ctd\u003e1650 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePhysical Dimensions \u0026amp; Weight\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal Diameter (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003ctd\u003e5.2 ... 22.2 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDimensional Drawings\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003e±\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ee\u003c\/td\u003e\n\u003ctd\u003e12.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ea (typical)\u003c\/td\u003e\n\u003ctd\u003e3.4 ... 6.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ew max\u003c\/td\u003e\n\u003ctd\u003e27.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eth max\u003c\/td\u003e\n\u003ctd\u003e5.7 ... 11.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eh max\u003c\/td\u003e\n\u003ctd\u003e31.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003el min\u003c\/td\u003e\n\u003ctd\u003e25.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ed\u003c\/td\u003e\n\u003ctd\u003e±0.05 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePackage Type: Black (BLK)\u003c\/li\u003e\n\u003cli\u003eUOM: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4581k101.pdf\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Please review cautions and warnings in the datasheet before installation. For detailed specifications and application guidance, refer to the provided datasheet link.\u003c\/p\u003e\u003cbr\u003e"}
