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MINISMDC075F/24-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 24V 750MA 1812
- Series：PolySwitch®, miniSMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：24V
- Current - Hold (Ih) (Max)：750 mA
- Current - Trip (It)：1.5 A
- Current - Max：40 A
- Time to Trip：300 ms
- Resistance - Initial (Ri) (Min)：90 mOhms
- Resistance - Post Trip (R1) (Max)：290 mOhms
- 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：0.181" L x 0.128" W (4.60mm x 3.24mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.057" (1.46mm)
- Lead Spacing：-
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Overview
The Littelfuse MINISMDC075F/24-2 is a PolySwitch miniSMDC series polymer PTC resettable fuse designed for surface mount applications. It features a hold current of 0.75 A and a trip current of 1.5 A with a maximum trip time of 0.3 seconds. The device operates at a maximum voltage of 24 V DC and has a maximum fault current rating of 40 A. Electrical characteristics include a minimum initial resistance of 90 mΩ and a maximum post-trip resistance of 290 mΩ, with a power dissipation of 0.8 W. The component measures 3.41 mm in length, 1.46 mm in width, and 4.83 mm in height, utilizing tin-plated terminals.
Feature Summary
- Provides automatic circuit protection through reversible polymer positive temperature coefficient technology
- Offers compact surface mount footprint suitable for space-constrained electronic designs
- Ensures reliable operation across specified industrial temperature ranges
Applications
- Overcurrent protection for portable consumer electronics
- Circuit safeguarding in automotive communication modules
- Protection interfaces for industrial control systems
Procurement Notes
Verify the specific suffix designation to confirm voltage ratings and electrical parameters, as variations exist within the miniSMDC family. Confirm RoHS compliance status and moisture sensitivity levels prior to assembly. Ensure storage conditions meet manufacturer guidelines to preserve solderability and performance integrity during procurement and handling processes.
Selection Notes
Select this component when a 24 V DC rated resettable fuse with a 0.75 A hold current is required. Compare against the MINISMDC075F-2 variant which utilizes a 13.2 V DC rating to ensure voltage compatibility. Evaluate thermal derating requirements based on ambient operating temperatures to maintain effective circuit protection capabilities under load conditions.
Part Context
This part belongs to the Littelfuse miniSMDC series, representing a specialized line of polymer PTC devices engineered for high-density surface mount integration. The series provides alternative solutions to traditional fusible links by offering reusable overcurrent protection mechanisms compatible with automated pick-and-place manufacturing processes.
Replacement Considerations
- MINISMDC075F-2
FAQ
What is the maximum fault current rating for this component?
The MINISMDC075F/24-2 supports a maximum fault current of 40 A.
Does this device support reusability after tripping?
Yes, it is a polymer PTC resettable fuse that automatically returns to a low-resistance state once the overload condition is removed and the device cools down.
