BOURNS MF-USML230-2 Resettable Fuses - PPTC 6V 2.30A-HD 50A MAX
The BOURNS MF-USML230-2 is a high-performance, resettable PPTC (Polymer Positive Temperature Coefficient) fuse designed for circuit protection applications. Manufactured in China, this low ohmic device offers reliable overcurrent protection for various electronic systems.
Environmental Operating Temperature Range: -40°C to +85°C
Passive Aging Resistance Change: ±10% after 1000 hours at 85°C
Humidity Aging Resistance Change: ±15% after 100 hours at 85% R.H.
Vibration and Thermal Shock Resistance: No change as per MIL-STD standards
Electrical Specifications
Model
V max. Volts
I max. Amps
Ihold
Itrip
Resistance
Max. Time To Trip
Tripped Power Dissipation
MF-USML230
6
50
2.30
4.60
0.0045 Ohms
8 seconds
0.8 Watts
Environmental & Mechanical Characteristics
Operating Temperature: -40°C to +85°C
Storage Conditions: Before Opening - +40°C max, 70% RH max; After Opening - +40°C max, 10% RH max
Reel Packaging: 5000 pcs per reel
Passive Aging: Resistance change within ±10% after 1000 hours at 85°C
Humidity Aging: Resistance change within ±15% after 100 hours at 85% R.H.
Vibration & Thermal Shock: No change as per MIL-STD
RoHS Compliant: Yes
Application Areas
Thermal protection for Li-ion and polymer battery packs
Game consoles
PC motherboards
USB port protection - USB 2.0, 3.0 & OTG
Mobile phones
Digital cameras
Additional Information
For detailed specifications and testing procedures, please refer to the datasheet. Users should verify device performance in their specific applications. The product is RoHS compliant and UL certified (File Number: E174545). Please note that the MF-USML230-2 cannot be wave or hand soldered; refer to the datasheet for soldering recommendations.
Legal Disclaimers: This product complies with RoHS Directive 2015/863. For more legal information, see disclaimer.
Datasheet was not processed, please search the internet for the part number for more details.
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{"id":10019817292093,"title":"MF-USML230-2","handle":"mf-usml230-2","description":"\u003ch3\u003eBOURNS MF-USML230-2 Resettable Fuses - PPTC 6V 2.30A-HD 50A MAX\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS MF-USML230-2 is a high-performance, resettable PPTC (Polymer Positive Temperature Coefficient) fuse designed for circuit protection applications. Manufactured in China, this low ohmic device offers reliable overcurrent protection for various electronic systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MF-USML230-2\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\/mfusml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMF-USML 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\u003eVoltage Rating: 6V\u003c\/li\u003e\n\u003cli\u003eMaximum Continuous Current (Imax): 2.30A at 23°C\u003c\/li\u003e\n\u003cli\u003eHold Current (Ihold): 2.30A at 23°C\u003c\/li\u003e\n\u003cli\u003eTrip Current (Itrip): 4.60A at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Resistance: 0.0045 Ohms at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Trip Time: 8 seconds at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Power Dissipation: 0.8 Watts\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003cli\u003eEnvironmental Operating Temperature Range: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003ePassive Aging Resistance Change: ±10% after 1000 hours at 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging Resistance Change: ±15% after 100 hours at 85% R.H.\u003c\/li\u003e\n\u003cli\u003eVibration and Thermal Shock Resistance: No change as per MIL-STD standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003ctable\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\u003c\/th\u003e\n\u003cth\u003eItrip\u003c\/th\u003e\n\u003cth\u003eResistance\u003c\/th\u003e\n\u003cth\u003eMax. Time To Trip\u003c\/th\u003e\n\u003cth\u003eTripped Power Dissipation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMF-USML230\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2.30\u003c\/td\u003e\n\u003ctd\u003e4.60\u003c\/td\u003e\n\u003ctd\u003e0.0045 Ohms\u003c\/td\u003e\n\u003ctd\u003e8 seconds\u003c\/td\u003e\n\u003ctd\u003e0.8 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEnvironmental \u0026amp; Mechanical Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Temperature: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003eStorage Conditions: Before Opening - +40°C max, 70% RH max; After Opening - +40°C max, 10% RH max\u003c\/li\u003e\n\u003cli\u003eReel Packaging: 5000 pcs per reel\u003c\/li\u003e\n\u003cli\u003ePassive Aging: Resistance change within ±10% after 1000 hours at 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging: Resistance change within ±15% after 100 hours at 85% R.H.\u003c\/li\u003e\n\u003cli\u003eVibration \u0026amp; Thermal Shock: No change as per MIL-STD\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Areas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermal protection for Li-ion and polymer battery packs\u003c\/li\u003e\n\u003cli\u003eGame consoles\u003c\/li\u003e\n\u003cli\u003ePC motherboards\u003c\/li\u003e\n\u003cli\u003eUSB port protection - USB 2.0, 3.0 \u0026amp; OTG\u003c\/li\u003e\n\u003cli\u003eMobile phones\u003c\/li\u003e\n\u003cli\u003eDigital cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and testing procedures, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-bo\/mfusml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e. Users should verify device performance in their specific applications. The product is RoHS compliant and UL certified (File Number: E174545). Please note that the MF-USML230-2 cannot be wave or hand soldered; refer to the datasheet for soldering recommendations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLegal Disclaimers:\u003c\/strong\u003e This product complies with RoHS Directive 2015\/863. For more legal information, see \u003ca href=\"http:\/\/www.bourns.com\/docs\/legal\/disclaimer.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edisclaimer\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eDatasheet was not processed, please search the internet for the part number for more details.\u003c\/p\u003e","published_at":"2025-08-11T17:20:18+05:30","created_at":"2025-08-11T17:20:19+05:30","vendor":"Waldom Electonics","type":"Circuit Protection","tags":["30A","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":50608492347709,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MF-USML230-2","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"MF-USML230-2","public_title":null,"options":["Default Title"],"price":3742,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"MF-USML230-2","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-USML230-2_49868046_a647be08.jpg?v=1754913022"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-USML230-2_49868046_a647be08.jpg?v=1754913022","options":["Title"],"media":[{"alt":null,"id":45783839244605,"position":1,"preview_image":{"aspect_ratio":1.485,"height":200,"width":297,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-USML230-2_49868046_a647be08.jpg?v=1754913022"},"aspect_ratio":1.485,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/MF-USML230-2_49868046_a647be08.jpg?v=1754913022","width":297}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eBOURNS MF-USML230-2 Resettable Fuses - PPTC 6V 2.30A-HD 50A MAX\u003c\/h3\u003e\n\u003cp\u003eThe BOURNS MF-USML230-2 is a high-performance, resettable PPTC (Polymer Positive Temperature Coefficient) fuse designed for circuit protection applications. Manufactured in China, this low ohmic device offers reliable overcurrent protection for various electronic systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MF-USML230-2\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\/mfusml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMF-USML 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\u003eVoltage Rating: 6V\u003c\/li\u003e\n\u003cli\u003eMaximum Continuous Current (Imax): 2.30A at 23°C\u003c\/li\u003e\n\u003cli\u003eHold Current (Ihold): 2.30A at 23°C\u003c\/li\u003e\n\u003cli\u003eTrip Current (Itrip): 4.60A at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Resistance: 0.0045 Ohms at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Trip Time: 8 seconds at 23°C\u003c\/li\u003e\n\u003cli\u003eMaximum Power Dissipation: 0.8 Watts\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003cli\u003eEnvironmental Operating Temperature Range: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003ePassive Aging Resistance Change: ±10% after 1000 hours at 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging Resistance Change: ±15% after 100 hours at 85% R.H.\u003c\/li\u003e\n\u003cli\u003eVibration and Thermal Shock Resistance: No change as per MIL-STD standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003ctable\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\u003c\/th\u003e\n\u003cth\u003eItrip\u003c\/th\u003e\n\u003cth\u003eResistance\u003c\/th\u003e\n\u003cth\u003eMax. Time To Trip\u003c\/th\u003e\n\u003cth\u003eTripped Power Dissipation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMF-USML230\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2.30\u003c\/td\u003e\n\u003ctd\u003e4.60\u003c\/td\u003e\n\u003ctd\u003e0.0045 Ohms\u003c\/td\u003e\n\u003ctd\u003e8 seconds\u003c\/td\u003e\n\u003ctd\u003e0.8 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEnvironmental \u0026amp; Mechanical Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Temperature: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003eStorage Conditions: Before Opening - +40°C max, 70% RH max; After Opening - +40°C max, 10% RH max\u003c\/li\u003e\n\u003cli\u003eReel Packaging: 5000 pcs per reel\u003c\/li\u003e\n\u003cli\u003ePassive Aging: Resistance change within ±10% after 1000 hours at 85°C\u003c\/li\u003e\n\u003cli\u003eHumidity Aging: Resistance change within ±15% after 100 hours at 85% R.H.\u003c\/li\u003e\n\u003cli\u003eVibration \u0026amp; Thermal Shock: No change as per MIL-STD\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Areas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermal protection for Li-ion and polymer battery packs\u003c\/li\u003e\n\u003cli\u003eGame consoles\u003c\/li\u003e\n\u003cli\u003ePC motherboards\u003c\/li\u003e\n\u003cli\u003eUSB port protection - USB 2.0, 3.0 \u0026amp; OTG\u003c\/li\u003e\n\u003cli\u003eMobile phones\u003c\/li\u003e\n\u003cli\u003eDigital cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and testing procedures, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-bo\/mfusml.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edatasheet\u003c\/a\u003e. Users should verify device performance in their specific applications. The product is RoHS compliant and UL certified (File Number: E174545). Please note that the MF-USML230-2 cannot be wave or hand soldered; refer to the datasheet for soldering recommendations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLegal Disclaimers:\u003c\/strong\u003e This product complies with RoHS Directive 2015\/863. For more legal information, see \u003ca href=\"http:\/\/www.bourns.com\/docs\/legal\/disclaimer.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edisclaimer\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eDatasheet was not processed, please search the internet for the part number for more details.\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.
