Introducing the EPCOS B72225S4251K101, a high-performance leaded varistor designed for circuit protection applications. Manufactured in China, this device offers reliable surge suppression and voltage clamping capabilities, making it ideal for protecting electronic circuits from transient voltage spikes.
High-energy SuperioR series E4 varistor for robust surge protection
Wide operating voltage range from 130 V RMS to 750 V RMS
Very high surge current rating up to 20 kA
UL approval to UL 1449 (file number E321126 – exception 580 V)
Compliance with IEC 62368-1, IEC 60950-1, and IEC 61051-2 standards
Epoxy resin coating with UL 94 V-0 flame retardant properties
Leaded round construction with tinned wire terminals
Electrical Specifications (at TA = 25°C):
Ordering Code
V RMS (V)
V DC (V)
I max (8/20 µs) (A)
I n (8/20 µs) 15x (A)
W max (2 ms) (J)
P max (W)
B72225S4251K101
250
170
20000
10000
185
1.0
Characteristics:
Ordering Code
V v (1 mA) (V)
∆V v (1 mA) (%)
v c,max (i) c (V)
i c (A)
C typ (1 kHz) (pF)
B72225S4251K101
390
±10
600
150
2100
Physical Dimensions & Weight:
Nominal Diameter (mm)
Weight (g)
25
5.2 ... 22.2
Dimensional Details:
Dimensions
±
e (mm)
a (mm)
w (mm)
th (mm)
h (mm)
l (mm)
d (mm)
B72225S4131K101 to B72225S4751K101
±
12.7
3.4 – 6.5
27.5
5.7 – 11.7
31.0
25.0
1.0
Note: This product is suitable for applications requiring high surge current handling and reliable circuit protection. For detailed lead configuration and packaging options, refer to the datasheet.
For more detailed specifications and technical data, please consult the datasheet.
Disclaimers and safety cautions are included in the datasheet. Please review all safety and handling instructions before use.
{"id":10024180941117,"title":"B72225S4251K101","handle":"b72225s4251k101","description":"\u003ch3\u003eElectronics - Varistors 250VAC 10% 25mm SuperioR\u003c\/h3\u003e\n\u003cp\u003eIntroducing the EPCOS B72225S4251K101, a high-performance leaded varistor designed for circuit protection applications. Manufactured in China, this device offers reliable surge suppression and voltage clamping capabilities, making it ideal for protecting electronic circuits from transient voltage spikes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B72225S4251K101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e EPCOS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Black (BLK)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Circuit Protection | Varistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4251k101.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-energy SuperioR series E4 varistor for robust surge protection\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range from 130 V RMS to 750 V RMS\u003c\/li\u003e\n\u003cli\u003eVery high surge current rating up to 20 kA\u003c\/li\u003e\n\u003cli\u003eUL approval to UL 1449 (file number E321126 – exception 580 V)\u003c\/li\u003e\n\u003cli\u003eCompliance with IEC 62368-1, IEC 60950-1, and IEC 61051-2 standards\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eLeaded round construction with tinned wire terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Specifications (at TA = 25°C):\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV RMS (V)\u003c\/th\u003e\n\u003cth\u003eV DC (V)\u003c\/th\u003e\n\u003cth\u003eI max (8\/20 µs) (A)\u003c\/th\u003e\n\u003cth\u003eI n (8\/20 µs) 15x (A)\u003c\/th\u003e\n\u003cth\u003eW max (2 ms) (J)\u003c\/th\u003e\n\u003cth\u003eP max (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4251K101\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e170\u003c\/td\u003e\n\u003ctd\u003e20000\u003c\/td\u003e\n\u003ctd\u003e10000\u003c\/td\u003e\n\u003ctd\u003e185\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCharacteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\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\u003eB72225S4251K101\u003c\/td\u003e\n\u003ctd\u003e390\u003c\/td\u003e\n\u003ctd\u003e±10\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Dimensions \u0026amp; Weight:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\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\u003c\/td\u003e\n\u003ctd\u003e5.2 ... 22.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDimensional Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003e±\u003c\/th\u003e\n\u003cth\u003ee (mm)\u003c\/th\u003e\n\u003cth\u003ea (mm)\u003c\/th\u003e\n\u003cth\u003ew (mm)\u003c\/th\u003e\n\u003cth\u003eth (mm)\u003c\/th\u003e\n\u003cth\u003eh (mm)\u003c\/th\u003e\n\u003cth\u003el (mm)\u003c\/th\u003e\n\u003cth\u003ed (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4131K101 to B72225S4751K101\u003c\/td\u003e\n\u003ctd\u003e±\u003c\/td\u003e\n\u003ctd\u003e12.7\u003c\/td\u003e\n\u003ctd\u003e3.4 – 6.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003ctd\u003e5.7 – 11.7\u003c\/td\u003e\n\u003ctd\u003e31.0\u003c\/td\u003e\n\u003ctd\u003e25.0\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: This product is suitable for applications requiring high surge current handling and reliable circuit protection. For detailed lead configuration and packaging options, refer to the datasheet.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications and technical data, please consult the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4251k101.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDisclaimers and safety cautions are included in the datasheet. Please review all safety and handling instructions before use.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-14T03:07:17+05:30","created_at":"2025-08-14T03:07:17+05:30","vendor":"Waldom Electonics","type":"Circuit Protection","tags":["250VAC","25mm","Circuit","EPCOS","IMPORT_CSV","Varistors","WLDM"],"price":32846,"price_min":32846,"price_max":32846,"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":50617668731197,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B72225S4251K101","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"B72225S4251K101","public_title":null,"options":["Default Title"],"price":32846,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"B72225S4251K101","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/B72225S4251K101_56547998_6270a898.jpg?v=1755121041"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/B72225S4251K101_56547998_6270a898.jpg?v=1755121041","options":["Title"],"media":[{"alt":null,"id":45826644803901,"position":1,"preview_image":{"aspect_ratio":1.19,"height":200,"width":238,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/B72225S4251K101_56547998_6270a898.jpg?v=1755121041"},"aspect_ratio":1.19,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/B72225S4251K101_56547998_6270a898.jpg?v=1755121041","width":238}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eElectronics - Varistors 250VAC 10% 25mm SuperioR\u003c\/h3\u003e\n\u003cp\u003eIntroducing the EPCOS B72225S4251K101, a high-performance leaded varistor designed for circuit protection applications. Manufactured in China, this device offers reliable surge suppression and voltage clamping capabilities, making it ideal for protecting electronic circuits from transient voltage spikes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B72225S4251K101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e EPCOS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Black (BLK)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Circuit Protection | Varistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4251k101.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-energy SuperioR series E4 varistor for robust surge protection\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range from 130 V RMS to 750 V RMS\u003c\/li\u003e\n\u003cli\u003eVery high surge current rating up to 20 kA\u003c\/li\u003e\n\u003cli\u003eUL approval to UL 1449 (file number E321126 – exception 580 V)\u003c\/li\u003e\n\u003cli\u003eCompliance with IEC 62368-1, IEC 60950-1, and IEC 61051-2 standards\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eLeaded round construction with tinned wire terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Specifications (at TA = 25°C):\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV RMS (V)\u003c\/th\u003e\n\u003cth\u003eV DC (V)\u003c\/th\u003e\n\u003cth\u003eI max (8\/20 µs) (A)\u003c\/th\u003e\n\u003cth\u003eI n (8\/20 µs) 15x (A)\u003c\/th\u003e\n\u003cth\u003eW max (2 ms) (J)\u003c\/th\u003e\n\u003cth\u003eP max (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4251K101\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e170\u003c\/td\u003e\n\u003ctd\u003e20000\u003c\/td\u003e\n\u003ctd\u003e10000\u003c\/td\u003e\n\u003ctd\u003e185\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCharacteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\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\u003eB72225S4251K101\u003c\/td\u003e\n\u003ctd\u003e390\u003c\/td\u003e\n\u003ctd\u003e±10\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Dimensions \u0026amp; Weight:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\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\u003c\/td\u003e\n\u003ctd\u003e5.2 ... 22.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDimensional Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003e±\u003c\/th\u003e\n\u003cth\u003ee (mm)\u003c\/th\u003e\n\u003cth\u003ea (mm)\u003c\/th\u003e\n\u003cth\u003ew (mm)\u003c\/th\u003e\n\u003cth\u003eth (mm)\u003c\/th\u003e\n\u003cth\u003eh (mm)\u003c\/th\u003e\n\u003cth\u003el (mm)\u003c\/th\u003e\n\u003cth\u003ed (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72225S4131K101 to B72225S4751K101\u003c\/td\u003e\n\u003ctd\u003e±\u003c\/td\u003e\n\u003ctd\u003e12.7\u003c\/td\u003e\n\u003ctd\u003e3.4 – 6.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003ctd\u003e5.7 – 11.7\u003c\/td\u003e\n\u003ctd\u003e31.0\u003c\/td\u003e\n\u003ctd\u003e25.0\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: This product is suitable for applications requiring high surge current handling and reliable circuit protection. For detailed lead configuration and packaging options, refer to the datasheet.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications and technical data, please consult the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-eps\/eps-b72225s4251k101.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDisclaimers and safety cautions are included in the datasheet. Please review all safety and handling instructions before use.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
