PICOSMDC012S-2 Equivalent & Substitute Parts

Part Overview

The PICOSMDC012S-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. in the PolySwitch® picoSMD series. This component provides overcurrent protection in surface mount 0805 (2012 Metric) package format with a maximum voltage rating of 15V and hold current of 120 mA. The part is Active status and widely used in circuit protection applications requiring automatic reset functionality. Substitute parts are identified to provide equivalent protection characteristics when the primary part is unavailable or when design requirements permit alternative electrical parameters within the same package and voltage class.

Substiute Parts

PICOSMDC012S-2

Littelfuse Inc.In Stock: 2346PICOSMDC012S-2 Datasheet

Current PartRFQ

0805L010YR

Littelfuse Inc.In Stock: 2283740805L010YR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PICOSMDC012S-2 is determined by the following critical parameters:

Voltage Compatibility: Maximum voltage rating must be 15V or greater to maintain circuit protection integrity.

Package Compatibility: Physical package must be 0805 (2012 Metric) surface mount to ensure PCB footprint compatibility and assembly process alignment.

Current Rating Tolerance: Hold current (Ih) and trip current (It) values must fall within acceptable ranges for the protected circuit. The PICOSMDC012S-2 specifies 120 mA hold current and 300 mA trip current.

Polymeric PTC Type: Component must be a Polymeric PTC Resettable Fuse to provide automatic reset functionality after fault condition clearance.

Regulatory Compliance: Parts must maintain ROHS3 compliance and appropriate agency approvals (CSA, TUV, UL, or equivalent).

The substitute part 0805L010YR meets these criteria with identical voltage rating (15V), identical package format (0805 Concave), compatible polymeric PTC construction, and equivalent regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Both PICOSMDC012S-2 and 0805L010YR are Active status components from Littelfuse Inc. with ROHS3 compliance and equivalent regulatory approvals (CSA, TUV, UL certifications present or equivalent cURus, TUV certifications). Both components are suitable for 15V circuit protection applications in 0805 surface mount package format.

The primary electrical difference is the hold current specification: PICOSMDC012S-2 provides 120 mA hold current while 0805L010YR provides 100 mA hold current. This difference affects the maximum continuous current the fuse will allow before thermal trip activation. Selection between these parts depends on whether the protected circuit requires the higher 120 mA hold current rating or can operate within the 100 mA specification of the substitute.

Both parts share identical trip current (300 mA), identical voltage rating (15V), identical package format, and identical operating temperature range, ensuring mechanical and thermal compatibility in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can 0805L010YR directly replace PICOSMDC012S-2 on existing PCBs?

A: Yes, from a mechanical and thermal perspective. Both components use identical 0805 (2012 Metric) Concave surface mount package format with matching footprints and assembly requirements. Electrical compatibility depends on circuit requirements for hold current specification.

Q: What is the significance of the 20 mA difference in hold current between these parts?

A: Hold current (Ih) is the maximum continuous current the fuse allows without thermal activation. PICOSMDC012S-2 permits up to 120 mA continuous operation, while 0805L010YR permits up to 100 mA. If the protected circuit draws more than 100 mA during normal operation, 0805L010YR may cause nuisance trips. Verify circuit current requirements before substitution.

Q: Are both parts suitable for the same voltage applications?

A: Yes. Both components have identical maximum voltage rating of 15V and identical operating temperature range of -40°C to 85°C, making them suitable for equivalent voltage class applications.

Q: What regulatory certifications apply to both parts?

A: PICOSMDC012S-2 carries CSA, TUV, and UL approvals. 0805L010YR carries cURus and TUV approvals. Both maintain ROHS3 compliance. Verify specific certification requirements for your application before selection.

Q: Do these parts have different initial resistance values?

A: Yes. PICOSMDC012S-2 specifies minimum initial resistance of 1.5 Ohms, while 0805L010YR specifies minimum initial resistance of 1 Ohm. Post-trip resistance also differs: 9 Ohms maximum for PICOSMDC012S-2 versus 6 Ohms maximum for 0805L010YR. These differences may affect circuit behavior during fault conditions and recovery.

Q: What is the trip current specification and does it differ between parts?

A: Both parts specify identical trip current (It) of 300 mA. This is the fault current threshold at which the fuse activates thermal protection. No difference exists between parts for this parameter.