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MF-USML350/6-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 3.5A 1210
- Series：Multifuse®, MF-USML/X
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- 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：-
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Overview
The Bourns MF-USML350/6-2 is a surface-mount PPTC resettable fuse from the USM series, designed for overcurrent protection in compact electronic circuits. It features a low-profile package suitable for automated assembly processes. The component provides reliable circuit interruption upon detecting excessive current flow and automatically resets once the fault condition is removed and the device cools down. This specific model is engineered to meet stringent space constraints while maintaining robust thermal performance standards required for modern consumer and industrial electronics applications.
Feature Summary
- Surface-mount technology enables efficient placement on printed circuit boards
- Automatic reset functionality restores circuit continuity after fault clearance
- Low profile design accommodates tight spatial requirements within assemblies
Applications
- Portable electronic devices requiring compact overcurrent protection
- Consumer electronics with limited board space constraints
- Industrial control systems needing reliable circuit safeguarding
Procurement Notes
Verify the exact part number suffix against official Bourns documentation to ensure correct voltage and current ratings. Confirm RoHS compliance status if required by your manufacturing standards. Check for any specific handling instructions related to surface-mount reflow soldering profiles. Ensure the selected variant matches your circuit's operational temperature range and hold current requirements precisely.
Selection Notes
Choose this component when space-saving surface-mount packaging is mandatory for overcurrent protection. Consider the specific trip time characteristics and maximum working voltage limits of the USM series relative to your circuit's normal operating conditions. Evaluate the thermal environment to ensure the device can dissipate heat effectively during both normal operation and fault states without affecting nearby components.
Part Context
This part belongs to Bourns' USM series of surface-mount polymeric positive temperature coefficient devices. These components are widely utilized across various industries for protecting sensitive electronic circuits from damage caused by overcurrent conditions. The series offers a balance of performance, size, and reliability, making it a common choice for engineers designing modern electronic products where traditional axial leads are impractical.
Replacement Considerations
Consult official Bourns substitution guides for compatible alternatives within the same series or family. Verify that any substitute part maintains identical mounting dimensions and electrical characteristics. Cross-reference datasheets to ensure equivalent thermal and electrical performance metrics before implementing any replacement strategy.
