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MF-USHT020KX-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 200MA 1210
- Series：Multifuse®, MF-USHT
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：200 mA
- Current - Trip (It)：1:00 AM
- Current - Max：20 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：600 mOhms
- Resistance - Post Trip (R1) (Max)：5 Ohms
- Operating Temperature：-40°C ~ 125°C
- Grade：Automotive
- Qualification：AEC-Q200
- 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)：0.033" (0.85mm)
- Lead Spacing：-
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Overview
The MF-USHT020KX-2 is a high-temperature surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the Bourns MF-USHT series. It features a 1210 (3225 metric) package with a hold current of 200 mA and a trip current of 1 A. The device supports a maximum voltage of 36 VDC and a maximum rated current of 20 A, with an initial resistance of 5 Ohms. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- High-temperature polymer construction for reliable circuit protection in demanding thermal environments
- Surface-mount design compatible with standard SMD/SMT assembly processes
- Resettable functionality eliminates the need for manual replacement after fault conditions
Applications
- Overcurrent protection for portable electronic devices
- Protection circuits in automotive electronics
- Industrial instrumentation power lines
- Telecommunications equipment input stages
Procurement Notes
Verify the specific suffix 'KX-2' against the manufacturer's official datasheet to confirm exact packaging configuration and compliance status. Ensure the selected variant matches the required 36VDC rating and 1210 footprint for your PCB layout. Cross-reference the RoHS declaration with the latest product change notifications to guarantee regulatory adherence for your target market.
Selection Notes
Select this component when applications require overcurrent protection at voltages up to 36VDC with a hold current of 200mA. The 1210 package offers a compact solution for space-constrained designs. Consider the -40°C to +125°C operating range for environments with significant thermal variations. Ensure the trip current of 1A aligns with the normal operating current of the protected circuit to prevent nuisance tripping.
Part Context
This part belongs to the Bourns Multifuse MF-USHT series, which specializes in high-temperature PPTC resettable fuses. The series is designed to provide robust circuit protection in applications where standard polymeric fuses may fail due to elevated ambient temperatures. The MF-USHT line expands Bourns' portfolio of surface-mount protection devices for modern electronics.
Replacement Considerations
Consult the official Bourns selection guide for direct replacements within the MF-USHT series that match the 200mA hold current and 36VDC voltage rating. Verify that any substitute maintains the 1210 package dimensions and -40°C to +125°C temperature range specifications.
