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MINISMDC110-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 8V 1.1A 1812
- Series：PolySwitch®, miniSMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：8V
- Current - Hold (Ih) (Max)：1.1 A
- Current - Trip (It)：2.2 A
- Current - Max：100 A
- Time to Trip：300 ms
- Resistance - Initial (Ri) (Min)：40 mOhms
- Resistance - Post Trip (R1) (Max)：210 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：0.179" L x 0.128" W (4.55mm x 3.24mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.024" (0.62mm)
- Lead Spacing：-
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Overview
The Littelfuse MINISMDC110-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse belonging to the miniSMD series. It features a hold current of 1.1 A and a trip current of 2.2 A, rated for a maximum voltage of 8 VDC with a maximum fault current capacity of 100 A. The device exhibits an initial resistance of 210 mOhms and operates within a temperature range of -40°C to +85°C. Housed in a compact 1812 (4532 metric) package measuring 4.73 mm by 3.41 mm with a height of 0.62 mm, it provides reliable circuit protection in space-constrained applications.
Feature Summary
- Provides automatic circuit interruption upon overcurrent conditions through self-resetting polymer technology
- Offers high fault current tolerance up to 100 A for robust protection against short circuits
- Designed for direct surface mount integration into printed circuit boards
Applications
- Protection of portable electronic devices and battery-powered equipment
- Overcurrent safeguarding in automotive electronics and infotainment systems
- Circuit protection for telecommunications infrastructure and industrial control modules
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number MINISMDC110-2 with official Littelfuse documentation. Confirm that the specific suffix matches the required electrical ratings and package dimensions. Ensure compliance with RoHS directives and moisture sensitivity levels prior to assembly. Validate supplier credentials to guarantee genuine sourcing from authorized channels.
Selection Notes
Select this component when designing circuits requiring low-profile surface mount protection with an 8 VDC rating. The 1.1 A hold current suits moderate load applications, while the 210 mOhms resistance minimizes power loss during normal operation. Consider the 1812 footprint for board space optimization compared to larger radial or standard SMD alternatives.
Part Context
This device is part of the PolySwitch miniSMD family, engineered for high-density PCB layouts. It serves as a reusable alternative to traditional one-time fuses, reducing maintenance requirements. The series supports various voltage and current configurations, allowing designers to scale protection levels while maintaining consistent physical dimensions across different product lines.
Replacement Considerations
Publicly confirmed substitute part numbers include RF1911-000 and A56932-000. These identifiers represent equivalent components within the same product line and should be verified against datasheet specifications before implementation.
