BOURNS MF-NSML400-2 Resettable Fuses - PPTC 6V 4A-HD, 50A MAX
The BOURNS MF-NSML400-2 is a high-quality, resettable polymer PTC fuse designed for circuit protection applications. Manufactured in China, this device offers reliable overcurrent protection with a low resistance profile and robust environmental characteristics.
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{"id":10013808034109,"title":"MF-NSML400-2","handle":"mf-nsml400-2","description":"\u003ch3\u003eBOURNS MF-NSML400-2 Resettable Fuses - PPTC 6V 4A-HD, 50A MAX\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS MF-NSML400-2 is a high-quality, resettable polymer PTC fuse designed for circuit protection applications. Manufactured in China, this device offers reliable overcurrent protection with a low resistance profile and robust environmental characteristics.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MF-NSML400-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e BOURNS\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 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 REEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-bo\/mfnsml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMF-NSML Series Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResettable PPTC fuse rated at 6V and 4A, with a maximum trip current of 50A\u003c\/li\u003e\n\u003cli\u003eDesigned for circuit protection in electronic devices such as USB ports, mobile phones, digital cameras, game consoles, and PC motherboards\u003c\/li\u003e\n\u003cli\u003eRoHS compliant, ensuring environmentally friendly manufacturing\u003c\/li\u003e\n\u003cli\u003eSuitable for applications requiring high current capacity and low resistance\u003c\/li\u003e\n\u003cli\u003ePackage delivered on reel for automated assembly processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eV max. Volts\u003c\/th\u003e\n\u003cth\u003eI max. Amps\u003c\/th\u003e\n\u003cth\u003eIhold (A)\u003c\/th\u003e\n\u003cth\u003eItrip (A)\u003c\/th\u003e\n\u003cth\u003eResistance (Ω)\u003c\/th\u003e\n\u003cth\u003eMax. Time To Trip (Seconds)\u003c\/th\u003e\n\u003cth\u003eTripped Power Dissipation (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMF-NSML400\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e0.0015\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEnvironmental and Testing Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Temperature Range: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003eStorage Conditions: Max +40°C \/ 70% RH before opening; Max +40°C \/ 10% RH after opening\u003c\/li\u003e\n\u003cli\u003eResistance Change after Aging: ±10% typical resistance change at 1000 hours @ 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging: ±15% resistance change after 100 hours @ 85°C, 85% RH\u003c\/li\u003e\n\u003cli\u003eThermal Shock: ±30% resistance change after 20 cycles between +85°C and -40°C\u003c\/li\u003e\n\u003cli\u003eCompliance: RoHS, cUL (E174545), R 50302873\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for circuit protection in various electronic applications including battery packs, USB ports, HDMI sources, and mobile devices\u003c\/li\u003e\n\u003cli\u003ePackage includes a reel with 5,000 pieces for efficient manufacturing\u003c\/li\u003e\n\u003cli\u003eRefer to the datasheet for detailed dimensions and soldering recommendations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number \u003cem\u003eMF-NSML400-2\u003c\/em\u003e for more details.\u003c\/p\u003e\n\u003cp\u003eFor legal disclaimers and additional information, visit \u003ca href=\"http:\/\/www.bourns.com\/docs\/legal\/disclaimer.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBourns Legal Disclaimer\u003c\/a\u003e.\u003c\/p\u003e","published_at":"2025-08-10T22:29:08+05:30","created_at":"2025-08-10T22:29:08+05:30","vendor":"Waldom Electonics","type":"Circuit Protection","tags":["4A","50A","6V","BOURN","Circuit","IMPORT_CSV","PPTC","WLDM"],"price":3742,"price_min":3742,"price_max":3742,"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":50579031163197,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MF-NSML400-2","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"MF-NSML400-2","public_title":null,"options":["Default Title"],"price":3742,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"MF-NSML400-2","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-NSML400-2_49735426_7ff03b3c.jpg?v=1754845151"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-NSML400-2_49735426_7ff03b3c.jpg?v=1754845151","options":["Title"],"media":[{"alt":null,"id":45766179389757,"position":1,"preview_image":{"aspect_ratio":1.53,"height":200,"width":306,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-NSML400-2_49735426_7ff03b3c.jpg?v=1754845151"},"aspect_ratio":1.53,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-NSML400-2_49735426_7ff03b3c.jpg?v=1754845151","width":306}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eBOURNS MF-NSML400-2 Resettable Fuses - PPTC 6V 4A-HD, 50A MAX\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS MF-NSML400-2 is a high-quality, resettable polymer PTC fuse designed for circuit protection applications. Manufactured in China, this device offers reliable overcurrent protection with a low resistance profile and robust environmental characteristics.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MF-NSML400-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e BOURNS\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 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 REEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-bo\/mfnsml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMF-NSML Series Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResettable PPTC fuse rated at 6V and 4A, with a maximum trip current of 50A\u003c\/li\u003e\n\u003cli\u003eDesigned for circuit protection in electronic devices such as USB ports, mobile phones, digital cameras, game consoles, and PC motherboards\u003c\/li\u003e\n\u003cli\u003eRoHS compliant, ensuring environmentally friendly manufacturing\u003c\/li\u003e\n\u003cli\u003eSuitable for applications requiring high current capacity and low resistance\u003c\/li\u003e\n\u003cli\u003ePackage delivered on reel for automated assembly processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eV max. Volts\u003c\/th\u003e\n\u003cth\u003eI max. Amps\u003c\/th\u003e\n\u003cth\u003eIhold (A)\u003c\/th\u003e\n\u003cth\u003eItrip (A)\u003c\/th\u003e\n\u003cth\u003eResistance (Ω)\u003c\/th\u003e\n\u003cth\u003eMax. Time To Trip (Seconds)\u003c\/th\u003e\n\u003cth\u003eTripped Power Dissipation (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMF-NSML400\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e0.0015\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEnvironmental and Testing Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Temperature Range: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003eStorage Conditions: Max +40°C \/ 70% RH before opening; Max +40°C \/ 10% RH after opening\u003c\/li\u003e\n\u003cli\u003eResistance Change after Aging: ±10% typical resistance change at 1000 hours @ 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging: ±15% resistance change after 100 hours @ 85°C, 85% RH\u003c\/li\u003e\n\u003cli\u003eThermal Shock: ±30% resistance change after 20 cycles between +85°C and -40°C\u003c\/li\u003e\n\u003cli\u003eCompliance: RoHS, cUL (E174545), R 50302873\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for circuit protection in various electronic applications including battery packs, USB ports, HDMI sources, and mobile devices\u003c\/li\u003e\n\u003cli\u003ePackage includes a reel with 5,000 pieces for efficient manufacturing\u003c\/li\u003e\n\u003cli\u003eRefer to the datasheet for detailed dimensions and soldering recommendations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number \u003cem\u003eMF-NSML400-2\u003c\/em\u003e for more details.\u003c\/p\u003e\n\u003cp\u003eFor legal disclaimers and additional information, visit \u003ca href=\"http:\/\/www.bourns.com\/docs\/legal\/disclaimer.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBourns Legal Disclaimer\u003c\/a\u003e.\u003c\/p\u003e"}
I'm particularly impressed with how carefully the header pins are packed for the RP2350-PiZero, they arrived in perfect condition without any bent pins, which has been a persistent issue with other competitors. This attention to packaging detail really stands out.
I also received the latest A4 revision of the RP2350, which shows you maintain current inventory, that's really valuable for customers who want the most up to date components.
The delivery was quick and hassle free throughout. I'll definitely be recommending you to others!
App feedback: The discounts offered through the app are a nice bonus, but the component search function could be improved to match the ease of use on the website version. The rest of the app functions work well.
