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MICROASMDCH010F-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)：100 mA
- Current - Trip (It)：300 mA
- Current - Max：20 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：1 Ohms
- Resistance - Post Trip (R1) (Max)：7.5 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 MICROASMDCH010F-2 is a PolySwitch resettable PPTC fuse designed for surface-mount applications. It features a hold current of 100 mA and a trip current of 300 mA, with a maximum voltage rating of 30 VDC. The device offers a maximum fault current capacity of 20 A and an initial resistance of 7.5 Ohms. Packaged in a 1210 (3225 metric) SMD/SMT footprint, it operates within a temperature range of -40°C to +125°C. Power dissipation is rated at 800 mW, classifying it as a high-temperature variant suitable for demanding circuit protection environments.
Feature Summary
- Provides automatic overcurrent protection through polymer positive temperature coefficient technology
- Designed for high-temperature operation up to 125°C
- Supports surface-mount installation via SMD/SMT termination
Applications
- Overcurrent protection for portable electronic devices
- Protection of data ports and cable connectors
- Circuit safeguarding in automotive electronics
Procurement Notes
Verify the exact part number against official Littelfuse documentation to ensure compatibility with specific design requirements. Confirm that the 1210 package dimensions and electrical ratings align with the target PCB layout and thermal management strategy. Cross-reference datasheet specifications for hold and trip currents to validate performance under expected operating conditions.
Selection Notes
Select this component when a compact SMD solution is required for circuits operating at voltages up to 30 VDC. The 100 mA hold current makes it suitable for low-power signal lines or peripheral protection. Ensure the application environment supports the specified -40°C to +125°C operating range and that the 7.5 Ohm resistance does not adversely affect signal integrity or power delivery.
Part Context
This component belongs to the microASMDCH series of resettable fuses from Littelfuse. It is engineered to provide reliable overcurrent protection in space-constrained designs. The series utilizes polymer PTC technology to automatically interrupt excessive current flow and reset once the fault condition is removed, offering a reusable alternative to traditional one-time fuses.
Replacement Considerations
Check for direct substitutes within the same family, such as variants with different hold currents or voltage ratings. Verify that any replacement maintains the 1210 package size and meets the required 30 VDC and 100 mA specifications. Consult official Littelfuse cross-reference guides for confirmed compatible part numbers.
