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MINISMDC030F-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 300MA 1812
- Series：PolySwitch®, miniSMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：300 mA
- Current - Trip (It)：600 mA
- Current - Max：40 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：200 mOhms
- Resistance - Post Trip (R1) (Max)：1.75 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1812 (4532 Metric), Concave
- Size / Dimension：0.179" L x 0.128" W (4.55mm x 3.24mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.035" (0.89mm)
- Lead Spacing：-
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Overview
The Littelfuse MINISMDC030F-2 is a PolySwitch resettable fuse from the miniSMDC series, designed for surface mount applications. It features a maximum voltage rating of 30 VDC and a trip current of 600 mA. The device maintains a hold current of 300 mA with a typical resistance of 1.75 Ohms. It supports a maximum rated current of 40 A and operates within a temperature range of -40°C to +85°C. The component measures 4.73 mm in length, 3.41 mm in width, and 0.89 mm in height, conforming to the 1812 package style.
Feature Summary
- Provides automatic circuit protection through positive temperature coefficient polymer technology that increases resistance during overcurrent events.
- Offers reliable reset functionality after fault conditions clear, eliminating the need for manual replacement or tool usage.
- Designed for compact surface mount integration with standardized dimensions compatible with automated pick-and-place assembly processes.
Applications
- Portable electronic devices requiring space-efficient overcurrent protection
- Battery-powered equipment circuits needing resettable safety components
- Communication hardware interfaces protected against transient faults
Procurement Notes
Verify the specific manufacturer part number matches the required electrical specifications before ordering. Confirm compliance with relevant regulatory standards such as RoHS if applicable to your project requirements. Ensure the selected packaging format aligns with your manufacturing line capabilities. Check datasheet details for moisture sensitivity levels to determine proper storage and handling procedures during assembly.
Selection Notes
Choose this component when circuit design demands a low-profile surface mount solution with moderate current holding capabilities. Evaluate the thermal environment to ensure operation remains within the specified temperature limits. Consider the trip current threshold relative to normal operating loads to prevent nuisance tripping during standard usage scenarios.
Part Context
This device belongs to the miniSMDC family of PolySwitch resettable fuses manufactured by Littelfuse. The series provides various current ratings tailored for different protection needs while maintaining consistent physical footprints. These components serve as alternatives to traditional fusible links in modern electronics where serviceability and repeated fault tolerance are prioritized.
Replacement Considerations
MINISMDC030F/24-2
FAQ
What is the maximum working voltage for this component?
The maximum working voltage rating is 30 VDC.
Does this fuse require tools for replacement after activation?
No, it resets automatically once the fault condition is removed and the device cools down.
