The LITTLEFUSE LF1206L400SLWR is a high-performance PTC resettable fuse designed for circuit protection applications requiring ultra low internal resistance and automatic reset capabilities. Manufactured in Taiwan, this device offers reliable overcurrent protection with a maximum fault current of 50A and is suitable for various electronic devices and peripherals.
Key Features & Benefits
Ultra low internal resistance for minimal voltage drop
Very thin profile and miniature size to save board space
Allows higher hold current in a smaller, lower profile package compared to standard PPTC devices
Fast response to fault currents for enhanced protection
UL recognized and TUV approved
RoHS compliant, lead-free, and halogen-free
Product Specifications
Part Number
LF1206L400SLWR
Manufacturer
LITTLEFUSE
Country of Origin
TW
UOM
EA
ECCN
EAR99
Product Type
Circuit Protection
Category
Circuit Protection | PPTC Resettable Fuses
Package Type
Reel
Datasheet
For detailed electrical characteristics and application information, please refer to the datasheet.
Applications
USB peripherals including USB 3.0 / 2.0 ports
Li-ion / Li-Polymer battery packs
Smartphones, tablets, and notebooks
LCD / LED HDTVs
Computer peripherals, digital cameras, and video cameras
Hard disk drives and game consoles
Additional Information
The device is packaged on a reel for easy automated placement and is recognized for its high reliability and performance in protecting electronic circuits against overcurrent conditions. All specifications are subject to change without notice. For more technical resources, accessories, and samples, please visit the respective links.
Note: The datasheet was not processed; please search the internet for the part number LF1206L400SLWR for more details.
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{"id":10019664429373,"title":"1206L400SLWR","handle":"1206l400slwr","description":"\u003ch3\u003eProduct Description: LITTLEFUSE LF1206L400SLWR PTC Resettable Fuse 4A\u003c\/h3\u003e\n\u003cp\u003eThe LITTLEFUSE LF1206L400SLWR is a high-performance PTC resettable fuse designed for circuit protection applications requiring ultra low internal resistance and automatic reset capabilities. Manufactured in Taiwan, this device offers reliable overcurrent protection with a maximum fault current of 50A and is suitable for various electronic devices and peripherals.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra low internal resistance for minimal voltage drop\u003c\/li\u003e\n\u003cli\u003eVery thin profile and miniature size to save board space\u003c\/li\u003e\n\u003cli\u003eAllows higher hold current in a smaller, lower profile package compared to standard PPTC devices\u003c\/li\u003e\n\u003cli\u003eFast response to fault currents for enhanced protection\u003c\/li\u003e\n\u003cli\u003eUL recognized and TUV approved\u003c\/li\u003e\n\u003cli\u003eRoHS compliant, lead-free, and halogen-free\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eLF1206L400SLWR\u003c\/th\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eLITTLEFUSE\u003c\/th\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003cth\u003eTW\u003c\/th\u003e\n\u003cth\u003eUOM\u003c\/th\u003e\n\u003cth\u003eEA\u003c\/th\u003e\n\u003cth\u003eECCN\u003c\/th\u003e\n\u003cth\u003eEAR99\u003c\/th\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003cth\u003eCircuit Protection\u003c\/th\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003cth\u003eCircuit Protection | PPTC Resettable Fuses\u003c\/th\u003e\n\u003cth\u003ePackage Type\u003c\/th\u003e\n\u003cth\u003eReel\u003c\/th\u003e\n\u003cth\u003eDatasheet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor detailed electrical characteristics and application information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-lf\/lf-1206l400slwr.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUSB peripherals including USB 3.0 \/ 2.0 ports\u003c\/li\u003e\n\u003cli\u003eLi-ion \/ Li-Polymer battery packs\u003c\/li\u003e\n\u003cli\u003eSmartphones, tablets, and notebooks\u003c\/li\u003e\n\u003cli\u003eLCD \/ LED HDTVs\u003c\/li\u003e\n\u003cli\u003eComputer peripherals, digital cameras, and video cameras\u003c\/li\u003e\n\u003cli\u003eHard disk drives and game consoles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eThe device is packaged on a reel for easy automated placement and is recognized for its high reliability and performance in protecting electronic circuits against overcurrent conditions. All specifications are subject to change without notice. For more technical resources, accessories, and samples, please visit the respective links.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number \u003cem\u003eLF1206L400SLWR\u003c\/em\u003e for more details.\u003c\/p\u003e","published_at":"2025-08-11T14:55:03+05:30","created_at":"2025-08-11T14:55:03+05:30","vendor":"Waldom Electonics","type":"Circuit Protection","tags":["IMPORT_CSV","WLDM"],"price":20512,"price_min":20512,"price_max":20512,"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":50608081994045,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"1206L400SLWR","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"1206L400SLWR","public_title":null,"options":["Default Title"],"price":20512,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"1206L400SLWR","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/1206L400SLWR_45232535_95dd9fd0.jpg?v=1754904307"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/1206L400SLWR_45232535_95dd9fd0.jpg?v=1754904307","options":["Title"],"media":[{"alt":null,"id":45782102638909,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/1206L400SLWR_45232535_95dd9fd0.jpg?v=1754904307"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/1206L400SLWR_45232535_95dd9fd0.jpg?v=1754904307","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description: LITTLEFUSE LF1206L400SLWR PTC Resettable Fuse 4A\u003c\/h3\u003e\n\u003cp\u003eThe LITTLEFUSE LF1206L400SLWR is a high-performance PTC resettable fuse designed for circuit protection applications requiring ultra low internal resistance and automatic reset capabilities. Manufactured in Taiwan, this device offers reliable overcurrent protection with a maximum fault current of 50A and is suitable for various electronic devices and peripherals.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra low internal resistance for minimal voltage drop\u003c\/li\u003e\n\u003cli\u003eVery thin profile and miniature size to save board space\u003c\/li\u003e\n\u003cli\u003eAllows higher hold current in a smaller, lower profile package compared to standard PPTC devices\u003c\/li\u003e\n\u003cli\u003eFast response to fault currents for enhanced protection\u003c\/li\u003e\n\u003cli\u003eUL recognized and TUV approved\u003c\/li\u003e\n\u003cli\u003eRoHS compliant, lead-free, and halogen-free\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eLF1206L400SLWR\u003c\/th\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eLITTLEFUSE\u003c\/th\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003cth\u003eTW\u003c\/th\u003e\n\u003cth\u003eUOM\u003c\/th\u003e\n\u003cth\u003eEA\u003c\/th\u003e\n\u003cth\u003eECCN\u003c\/th\u003e\n\u003cth\u003eEAR99\u003c\/th\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003cth\u003eCircuit Protection\u003c\/th\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003cth\u003eCircuit Protection | PPTC Resettable Fuses\u003c\/th\u003e\n\u003cth\u003ePackage Type\u003c\/th\u003e\n\u003cth\u003eReel\u003c\/th\u003e\n\u003cth\u003eDatasheet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor detailed electrical characteristics and application information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-lf\/lf-1206l400slwr.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUSB peripherals including USB 3.0 \/ 2.0 ports\u003c\/li\u003e\n\u003cli\u003eLi-ion \/ Li-Polymer battery packs\u003c\/li\u003e\n\u003cli\u003eSmartphones, tablets, and notebooks\u003c\/li\u003e\n\u003cli\u003eLCD \/ LED HDTVs\u003c\/li\u003e\n\u003cli\u003eComputer peripherals, digital cameras, and video cameras\u003c\/li\u003e\n\u003cli\u003eHard disk drives and game consoles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eThe device is packaged on a reel for easy automated placement and is recognized for its high reliability and performance in protecting electronic circuits against overcurrent conditions. All specifications are subject to change without notice. For more technical resources, accessories, and samples, please visit the respective links.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The datasheet was not processed; please search the internet for the part number \u003cem\u003eLF1206L400SLWR\u003c\/em\u003e for more details.\u003c\/p\u003e"}
Using this with SIM SIM8262E-M2 with Airtel 5g sim. Working seamlessly and getting download speed upto 450 mbps and upload speed upto 60 mbps. But with jio sim only 4g is working.
