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MICROASMDCH035F-2
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Product Detailed Parameters
- Description：PPTC-MINI-PSW
- Series：SMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：350 mA
- Current - Trip (It)：1.05 A
- Current - Max：20 A
- Time to Trip：10 ms
- Resistance - Initial (Ri) (Min)：400 mOhms
- Resistance - Post Trip (R1) (Max)：2.2 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Ratings：AEC-Q200
- 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 Littelfuse MICROASMDCH035F-2 is a polymer PTC self-resetting fuse from the microASMD series, designed for surface-mount applications. It features a maximum voltage rating of 30 VDC and a hold current (Ih) of 350 mA. The trip current (It) is specified at 1.05 A, with a maximum fault current rating of 20 A. The device has an initial resistance minimum of 600 mOhms and a post-trip resistance maximum of 1.3 Ohms. It operates within a temperature range of -40°C to +125°C and is housed in a 1210 (3225 metric) package.
Feature Summary
- Provides overcurrent protection through automatic reset functionality upon cooling after fault removal.
- Constructed using polymer technology for reliable performance in compact surface-mount layouts.
- Complies with automotive qualification standards for use in demanding electronic environments.
Applications
- Protection of portable electronics and multimedia devices
- Circuit safeguarding in automotive electronics systems
- Overcurrent protection for computer peripheral interfaces
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number with official Littelfuse documentation. Ensure that the specific suffix matches the required electrical characteristics and packaging configuration. Confirm compliance with relevant environmental regulations such as RoHS before integration into final assemblies.
Selection Notes
Select this component when circuit design requires a 30 VDC rated resettable fuse with a 350 mA holding current. Consider the 1210 footprint constraints and the high-temperature operational capability up to 125°C. Evaluate the trip current threshold against the normal operating load to ensure proper protection coordination.
Part Context
This device belongs to the microASMD family of PolySwitch resettable fuses, which are engineered for space-constrained surface-mount applications. The series offers various voltage and current ratings to support diverse circuit protection needs across consumer, industrial, and automotive sectors while maintaining small physical dimensions.
Replacement Considerations
Direct substitutes include other Littelfuse microASMD variants with matching 30 VDC and 350 mA specifications, such as the RF5161-000 equivalent. Verify that alternative parts maintain identical package dimensions and thermal characteristics to ensure board compatibility.
