NANOSMDC150-2 Equivalent & Substitute Parts

Part Overview

The NANOSMDC150-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse, part of the PolySwitch® nanoSMD series. This component provides overcurrent protection with a 6V maximum voltage rating and 1.5A hold current in a 1206 (3216 Metric) surface mount package. The NANOSMDC150-2 is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Voltage - Max	6V
Current - Hold (Ih) (Max)	1.5 A
Current - Trip (It)	3 A
Current - Max	100 A
Time to Trip	300 ms
Resistance - Initial (Ri) (Min)	40 mOhms
Resistance - Post Trip (R1) (Max)	110 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	1206 (3216 Metric), Concave
Approval Agency	CSA, TUV, UL

Substitute Part Grouping Explanation

Substitution of the NANOSMDC150-2 is determined by strict equivalence across the following critical parameters:

Voltage rating: 6V maximum
Current hold specification: 1.5A (Ih)
Current trip specification: 3A (It)
Maximum current capacity: 100A
Time to trip: 300 ms
Initial resistance: 40 mOhms minimum
Post-trip resistance: 110 mOhms maximum
Operating temperature range: -40°C to 85°C
Mounting configuration: Surface mount
Package form factor: 1206 (3216 Metric), Concave
Regulatory certifications: CSA, TUV, UL

The NANOSMDC150F-2 meets all these electrical and mechanical specifications, making it a direct functional equivalent for the obsolete NANOSMDC150-2.

Parameter Comparison

Parameter	NANOSMDC150-2	NANOSMDC150F-2	Match
Voltage - Max	6V	6V	✓
Current - Hold (Ih) (Max)	1.5 A	1.5 A	✓
Current - Trip (It)	3 A	3 A	✓
Current - Max	100 A	100 A	✓
Time to Trip	300 ms	300 ms	✓
Resistance - Initial (Ri) (Min)	40 mOhms	40 mOhms	✓
Resistance - Post Trip (R1) (Max)	110 mOhms	110 mOhms	✓
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	1206 (3216 Metric), Concave	1206 (3216 Metric), Concave	✓
Approval Agency	CSA, TUV, UL	CSA, TUV, UL	✓
Product Status	Obsolete	Active	—
RoHS Status	RoHS non-compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

The NANOSMDC150F-2 is the direct substitute for the obsolete NANOSMDC150-2. Both components are manufactured by Littelfuse and share identical electrical and mechanical specifications across all critical parameters. The NANOSMDC150F-2 maintains active product status with current manufacturing support and improved compliance posture. The component carries ROHS3 compliance, whereas the original NANOSMDC150-2 is RoHS non-compliant. Both components hold equivalent regulatory certifications from CSA, TUV, and UL. The NANOSMDC150F-2 is available in Cut Tape (CT) and Digi-Reel® packaging formats with substantial inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the NANOSMDC150F-2 be used as a direct replacement for the NANOSMDC150-2?

A: Yes. The NANOSMDC150F-2 is electrically and mechanically equivalent to the NANOSMDC150-2 across all specified parameters, including voltage rating, current hold and trip specifications, resistance characteristics, operating temperature range, and package form factor.

Q: What is the primary difference between these two part numbers?

A: The NANOSMDC150-2 is obsolete with no active manufacturing support. The NANOSMDC150F-2 is an active product with current availability and improved RoHS3 compliance status.

Q: Are there any dimensional differences between the two components?

A: Both components use the 1206 (3216 Metric) Concave package. Minor dimensional variations exist in width (0.065" vs. 0.063") and thickness (0.055" vs. 0.035"), but these fall within standard package tolerances and do not affect PCB footprint compatibility or functional performance.

Q: What certifications apply to the NANOSMDC150F-2?

A: The NANOSMDC150F-2 carries CSA, TUV, and UL approvals, matching the certification profile of the original NANOSMDC150-2.

Q: Is the NANOSMDC150F-2 available in standard packaging formats?

A: Yes. The NANOSMDC150F-2 is supplied in Cut Tape (CT) and Digi-Reel® packaging configurations with high inventory availability.

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