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MICROSMD150F-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 1.5A 1210
- Series：PolySwitch®, microSMD
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1.5 A
- Current - Trip (It)：3:00 AM
- Current - Max：40 A
- Time to Trip：1 s
- Resistance - Initial (Ri) (Min)：40 mOhms
- Resistance - Post Trip (R1) (Max)：110 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.048" (1.22mm)
- Lead Spacing：-
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Overview
The MICROSMD150F-2 is a surface-mount polymer PTC resettable fuse from the microSMD series. It features a 6VDC maximum voltage rating and a 1.5A hold current. The trip current is specified at 3A, with a maximum fault current (Imax) of 40A. Initial resistance is typically 40 mOhms, rising to a maximum of 110 mOhms after tripping. The component operates within a temperature range of -40°C to +85°C and is housed in a 1210 (3225 metric) package.
Feature Summary
- Utilizes polymer technology for automatic reset functionality following fault conditions.
- Designed for surface-mount assembly in compact electronic circuits.
- Provides overcurrent protection with rapid response characteristics.
Applications
- Portable consumer electronics circuit protection
- Battery pack safeguarding systems
- Interface circuit overcurrent defense
Procurement Notes
Verify RoHS compliance status as historical data indicates non-compliance for some variants. Confirm moisture sensitivity level (MSL 2A) handling requirements during storage and assembly. Ensure supplier documentation matches the specific suffix designation for accurate electrical parameters.
Selection Notes
Select this component when space-constrained designs require a 1.5A protection threshold. The 1210 footprint offers a balance between current capacity and board area. Verify that the 6VDC rating aligns with the system's operating voltage to ensure reliable performance without premature tripping.
Part Context
This part belongs to Littelfuse's PolySwitch microSMD family, engineered for high-density applications. It serves as a direct replacement for discontinued legacy parts like the MICROSMD150-2, maintaining similar electrical characteristics while offering updated manufacturing standards and availability.
Replacement Considerations
The MICROSMD150F-2 is the active successor to the obsolete MICROSMD150-2. Cross-brand alternatives such as Bourns MF-USMF150-2 may be considered but require verification of package dimensions and thermal performance compatibility.
