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MF-USML200/12-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 12V 2A 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)：2:00 AM
- Current - Trip (It)：4:00 AM
- Current - Max：50 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：5 mOhms
- Resistance - Post Trip (R1) (Max)：40 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)：0.031" (0.80mm)
- Lead Spacing：-
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Overview
The Bourns MF-USML200/12-2 is a high-temperature polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-USM Series. It features a hold current of 2.0A and a trip current of 4.0A, with a maximum voltage rating of 12VDC. The device operates within an ambient temperature range of -40°C to +85°C and can withstand peak operating temperatures up to 125°C. Designed for surface-mount applications, it utilizes a compact SMD package to provide overcurrent protection in space-constrained circuits.
Feature Summary
- High-temperature polymeric construction suitable for demanding thermal environments
- Surface-mount design optimized for automated assembly processes
- Resettable functionality eliminates the need for manual replacement after fault conditions
Applications
- Portable electronic devices requiring compact overcurrent protection
- Battery-powered equipment circuits
- Consumer electronics internal power lines
Procurement Notes
Verify the specific suffix codes against official Bourns documentation to confirm exact electrical ratings and packaging configurations. Ensure compatibility with your board's thermal management requirements given the high-temperature classification. Cross-reference the datasheet for reflow soldering profiles to prevent component damage during assembly.
Selection Notes
Select this component when circuit protection must endure elevated ambient temperatures beyond standard PPTC limits. Evaluate the hold and trip currents against the normal operating load to ensure reliable non-tripping during steady-state operation while providing adequate fault response. Confirm that the low voltage rating aligns with the system's DC supply rails.
Part Context
This part belongs to the MF-USM Series of high-temperature resettable fuses manufactured by Bourns Inc. The series is engineered to address the limitations of standard PPTC devices in high-heat applications, offering robust performance where conventional components might fail or drift out of specification due to thermal stress.
Replacement Considerations
Consult official Bourns substitution guides for verified equivalents. Generic PPTC replacements may not match the specific high-temperature polymer formulation or the precise trip characteristics required for this application.
