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MF-USMF020-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 200MA 1210
- Series：Multifuse®, MF-USMF
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：200 mA
- Current - Trip (It)：400 mA
- Current - Max：10:00 AM
- Time to Trip：20 ms
- Resistance - Initial (Ri) (Min)：400 mOhms
- Resistance - Post Trip (R1) (Max)：5 Ohms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.033" (0.85mm)
- Lead Spacing：-
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Overview
The Bourns MF-USMF020-2 is a surface-mount PPTC resettable fuse from the Multifuse USMF series, designed for circuit protection in compact electronic assemblies. It features a 1812 (4532 metric) package with SMD/SMT termination. Key electrical parameters include a hold current of 200 mA and a trip current of 400 mA. The device supports a maximum voltage of 60 VDC and offers a high fault current rating of 40 A. Initial resistance is specified at 6 ohms. The component operates within a temperature range of -40°C to +85°C.
Feature Summary
- Provides automatic circuit recovery after fault conditions without manual replacement
- Utilizes polymer positive temperature coefficient technology for rapid response to overcurrent events
- Designed for surface-mount assembly on printed circuit boards
Applications
- Portable consumer electronics protection
- Computer peripheral interface circuits
- Battery pack overcurrent safeguarding
Procurement Notes
Verify that the suffix '-2' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm RoHS compliance status through the official manufacturer datasheet or certification documents prior to integration into environmentally regulated products.
Selection Notes
Select this component when circuit design requires a 200 mA holding current with a 60 VDC maximum working voltage. Ensure the PCB layout accommodates the 1812 footprint dimensions. Evaluate thermal management requirements as the device dissipates power during normal operation and fault states.
Part Context
This part belongs to the Bourns Multifuse USMF series, which focuses on small-form-factor circuit protection solutions. The series targets applications where space constraints limit the use of traditional fuses while maintaining reliable overcurrent protection capabilities for low-voltage digital and analog circuits.
Replacement Considerations
Cross-reference with other USMF series variants such as MF-USMF010-2 or MF-USMF040-2 if different current ratings are needed. Verify package compatibility and electrical parameter alignment before substituting.
