PFNF.150.2 Polymeric PTC Resettable Fuse 6V 1.5A 1206

Part Overview

The PFNF.150.2 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., designed for surface mount applications in the 1206 (3216 Metric) package. This component provides overcurrent protection with a 6V maximum voltage rating and 1.5A hold current specification. The part is active in production status with ROHS3 compliance and cURus/TUV approvals. Equivalent substitute parts are necessary when primary inventory is unavailable or when alternative manufacturer sourcing is required for supply chain optimization.

Key Parameters

Parameter	Value
Manufacturer Part Number	PFNF.150.2
Manufacturer	SCHURTER Inc.
Series	PFNF
Product Type	Polymeric PTC Resettable Fuse
Voltage - Max	6V
Current - Hold (Ih)	1.5 A
Current - Trip (It)	3 A
Package / Case	1206 (3216 Metric), Concave
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Approval Agencies	cURus, TUV

Substitute Part Grouping Explanation

Substitute parts for the PFNF.150.2 are qualified based on the following critical parameters that must align with the original specification:

Voltage Rating: Maximum voltage must be 6V or higher
Current - Hold (Ih): Must match 1.5A specification
Package / Case: Must be 1206 (3216 Metric) form factor
Mounting Type: Must be Surface Mount
Operating Temperature Range: Must support -40°C ~ 85°C minimum
Product Status: Must be Active in production
Compliance: Must maintain ROHS3 compliance

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct replacement in circuit designs without modification to PCB layouts or assembly processes.

Parameter Comparison

Parameter	PFNF.150.2 (SCHURTER)	NANOSMDC150F-2 (Littelfuse)	PTS12066V150 (Eaton)	NANOSMDC200F-2 (Littelfuse)	NANOSMDC075F-2 (Littelfuse)
Voltage - Max	6V	6V	6V	6V	6V
Current - Hold (Ih)	1.5 A	1.5 A	1.5 A	2 A	750 mA
Current - Trip (It)	3 A	3 A	3 A	4 A	1.5 A
Current - Max	100 A	100 A	100 A	100 A	100 A
Time to Trip	1 s	300 ms	300 ms	1.5 s	100 ms
Resistance - Initial (Ri)	30 mOhms (Min)	40 mOhms (Min)	40 mOhms (Min)	20 mOhms (Min)	90 mOhms (Min)
Resistance - Post Trip (R1)	130 mOhms (Max)	110 mOhms (Max)	120 mOhms (Max)	72 mOhms (Max)	300 mOhms (Max)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	1206 (3216 Metric), Concave	1206 (3216 Metric), Concave	1206 (3216 Metric), Concave	1206 (3216 Metric), Concave	1206 (3216 Metric), Concave
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agencies	cURus, TUV	CSA, TUV, UL	cURus, TUV	CSA, TUV, UL	CSA, TUV, UL

Engineering Selection Recommendations

Direct Equivalents (1.5A Hold Current)

NANOSMDC150F-2 (Littelfuse) and PTS12066V150 (Eaton) are direct functional equivalents to the PFNF.150.2. Both maintain identical voltage and hold current ratings with the same 1206 package form factor. Both parts are active in production status with ROHS3 compliance. NANOSMDC150F-2 carries CSA, TUV, and UL approvals, while PTS12066V150 carries cURus and TUV approvals, matching the original part's certification profile.

Higher Current Rating Alternative

NANOSMDC200F-2 (Littelfuse) provides a 2A hold current specification with 4A trip current. This part is suitable for applications requiring higher current protection thresholds while maintaining the same 6V voltage rating and 1206 package. The part is active in production with ROHS3 compliance and CSA, TUV, UL approvals.

Lower Current Rating Alternative

NANOSMDC075F-2 (Littelfuse) provides a 750mA hold current specification with 1.5A trip current. This part is suitable for applications requiring lower current protection thresholds. The part is active in production with ROHS3 compliance and CSA, TUV, UL approvals.

All substitute parts maintain surface mount compatibility and operating temperature specifications consistent with the original PFNF.150.2 design requirements.

Frequently Asked Questions (FAQ)

Q: Can NANOSMDC150F-2 be used as a direct replacement for PFNF.150.2?

A: Yes. Both parts share identical voltage (6V), hold current (1.5A), trip current (3A), and package specifications (1206 Concave). Both are active production parts with ROHS3 compliance. The primary difference is the time-to-trip specification (300ms vs 1s) and approval agency certifications.

Q: What is the difference between the 1.5A and 2A versions?

A: The NANOSMDC200F-2 (2A hold current) provides higher overcurrent protection threshold compared to the 1.5A versions. Selection depends on the circuit's maximum allowable continuous current. The 2A version trips at 4A versus 3A for the 1.5A versions.

Q: Are all substitute parts available in the same packaging format?

A: All listed substitute parts use the 1206 (3216 Metric) surface mount package. However, packaging options differ: PFNF.150.2 and PTS12066V150 are supplied in Tape & Reel (TR), while Littelfuse nanoSMD parts are supplied in Cut Tape (CT) & Digi-Reel format. PCB assembly compatibility remains identical.

Q: What certifications do the substitute parts carry?

A: NANOSMDC150F-2, NANOSMDC200F-2, and NANOSMDC075F-2 carry CSA, TUV, and UL approvals. PTS12066V150 carries cURus and TUV approvals, matching the original PFNF.150.2 certification profile.

Q: Can NANOSMDC075F-2 be used if lower current protection is needed?

A: NANOSMDC075F-2 is suitable only if the circuit design requires 750mA hold current protection. This part has different trip characteristics (1.5A trip vs 3A) and should only be selected when the application specifically requires lower current thresholds.

Q: What is the impact of different time-to-trip specifications?

A: Time-to-trip values (100ms to 1.5s) indicate how quickly the fuse responds to overcurrent conditions. PFNF.150.2 has 1s response time, while NANOSMDC150F-2 and PTS12066V150 respond in 300ms. Selection should align with circuit protection requirements and transient tolerance specifications.

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