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13. PPTC Fuse for USB Port Protection

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MICROSMD075F-2
Component
DigiKey Part NoMICROSMD075F-2TR-ND
Mfr Part NoMICROSMD075F-2
ManufacturerLittelfuse Inc.

PTC RESET FUSE 6V 750MA 1210

Polymeric PTC Resettable Fuse 6V 750 mA Ih Surface Mount 1210 (3225 Metric), Concave

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EW

Response By EW AI

✅ Component type/category matches: PTC resettable fuse in DigiKey category Circuit Protection - PTC Resettable Fuses.
✅ Manufacturer matches AVL requirement: Littelfuse Inc.
✅ Type matches: Polymeric.
✅ Current - Hold (Ih) is 750 mA, which is within the required 500 mA to 750 mA range and suitable for a 500 mA USB port with thermal derating margin.
✅ Voltage - Max is 6 V, meeting the minimum ≥6 V requirement for a 5 V USB rail.
✅ Current - Max is 40 A, exceeding the required ≥5 A.
✅ Mounting Type matches: Surface Mount.
✅ Package / Case matches: 1210 (3225 Metric), Concave, which is an acceptable 1210 variant.
✅ Operating Temperature is -40°C to 85°C, meeting the required range.
✅ RoHS compliance matches: ROHS3 Compliant.

All required specifications are satisfied. This Littelfuse MICROSMD075F-2 is approved for USB host port 5 V overcurrent protection.
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