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MINIASMDC125F/16-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 16V 1.25A 1812
- Series：PolySwitch®, miniASMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：1.25 A
- Current - Trip (It)：2.5 A
- Current - Max：100 A
- Time to Trip：400 ms
- Resistance - Initial (Ri) (Min)：50 mOhms
- Resistance - Post Trip (R1) (Max)：140 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- 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)：0.019" (0.48mm)
- Lead Spacing：-
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Overview
The MINIASMDC125F/16-2 is a polymeric PTC resettable fuse from the PolySwitch miniASMDC series, designed for surface mount overcurrent protection. It features a 16V maximum voltage rating and a 1.25A hold current (Ih). The device trips at 2.5A and withstands a maximum fault current of 100A. With an initial resistance of 0.05 Ohms and a trip time of 400 ms, it operates within a -40°C to 85°C range. This component is AEC-Q200 qualified and housed in a compact 1812 (4532 Metric) concave package.
Feature Summary
- Polymeric construction provides reliable resettable overcurrent protection without manual replacement.
- Concave 1812 surface mount package design facilitates automated assembly and space-constrained layouts.
- AEC-Q200 qualification ensures automotive-grade reliability and performance consistency.
Applications
- Automotive electronic circuit protection
- Portable consumer electronics power lines
- Industrial control board overcurrent safeguarding
Procurement Notes
Verify the specific suffix /16-2 against official Littelfuse documentation to confirm voltage and current ratings. Ensure the procurement channel sources genuine components with valid traceability records. Confirm that the delivered parts match the required AEC-Q200 automotive grade specifications. Check for any recent obsolescence notices or lifecycle changes before finalizing orders.
Selection Notes
Select this component when a low-profile 1812 footprint is required for high-reliability applications. The 1.25A hold current suits circuits with steady-state loads near this threshold. Consider the 0.05 Ohm initial resistance for minimal voltage drop impact. The 100A max current capability allows handling significant surge events typical in automotive environments.
Part Context
This part belongs to the PolySwitch miniASMDC series, which focuses on compact form factors for modern electronics. It complements larger SMD fuses by offering similar protection in a reduced 1812 package. The series targets markets requiring robust, resettable protection where space is limited but automotive standards apply.
Replacement Considerations
Public confirmed substitute: MF-SM125-2 (Bourns Inc.). Verify electrical compatibility including hold current, voltage rating, and package dimensions before substitution.
