ChipApex | Global Electronic Components Supplier
MF-USML350/12-2
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：PTC RESET FUSE 12V 3.5A 1210
- Series：Multifuse®, MF-USML/X
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：12V
- Current - Hold (Ih) (Max)：3.5 A
- Current - Trip (It)：7:00 AM
- Current - Max：50 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：2 mOhms
- Resistance - Post Trip (R1) (Max)：22 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.101" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.047" (1.20mm)
- Lead Spacing：-
Download product information
Overview
The Bourns MF-USML350/12-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse designed for circuit protection. It belongs to the USML series, characterized by its compact form factor and suitability for high-density PCB layouts. The component functions as a self-resetting overcurrent protector, offering reliable performance in applications requiring precise current limiting without permanent damage after fault clearance.
Feature Summary
- Provides automatic circuit interruption during overcurrent conditions
- Self-resetting functionality eliminates need for manual replacement
- Surface-mount construction enables automated assembly processes
Applications
- Portable electronic device battery packs
- USB peripheral port protection
- Consumer electronics internal circuit safeguarding
Procurement Notes
Verify the specific suffix codes against official Bourns documentation to ensure correct voltage and current ratings. Confirm RoHS compliance status and lead times directly with authorized distributors. Cross-reference the full part number to avoid confusion with similar series variants that may differ in package size or trip characteristics.
Selection Notes
Select this component based on the required hold current and trip current specifications for the target application. Ensure the maximum working voltage rating exceeds the system's operating voltage. Consider the physical footprint constraints of the PCB design to confirm compatibility with the surface-mount package dimensions provided in the datasheet.
Part Context
This part is part of the Bourns USML series of surface-mount PPTC devices. These components are engineered for modern electronics where space is limited. The series offers various current ratings and package options to suit diverse protection needs in compact consumer and industrial devices.
Replacement Considerations
Consult official Bourns substitution guides for equivalent parts. Verify that any substitute matches the original hold current, trip current, and maximum voltage ratings. Ensure the replacement maintains the same surface-mount package type for mechanical compatibility.
