PFNF.075.2 Polymeric PTC Resettable Fuse 6V 750mA 1206 Equivalent & Substitute Parts

Part Overview

The PFNF.075.2 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 6V maximum voltage with 750mA hold current. This surface mount component in 1206 (3216 Metric) package format is designed for overcurrent protection in electronic circuits. The part maintains active product status with 3589 units in current inventory. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options for applications requiring identical or compatible electrical and mechanical specifications.

Substiute Parts

PFNF.075.2

SCHURTER Inc.In Stock: 3642PFNF.075.2 Datasheet

Current PartRFQ

NANOSMDC075F-2

Littelfuse Inc.In Stock: 55451NANOSMDC075F-2 Datasheet

SimilarRFQ

NANOSMDC150F-2

Littelfuse Inc.In Stock: 143600NANOSMDC150F-2 Datasheet

SimilarRFQ

PTS12066V075

Eaton - Electronics DivisionIn Stock: 12195PTS12066V075 Datasheet

SimilarRFQ

MF-NSMF075-2

Bourns Inc.In Stock: 27310MF-NSMF075-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for PFNF.075.2 are classified based on strict electrical and mechanical parameter alignment:

Direct Electrical Equivalents maintain identical voltage (6V), hold current (750mA), trip current (1.5A), and time to trip (100ms) specifications. These parts are mechanically compatible within the 1206 package format with concave configuration and operate across the same temperature range (-40°C ~ 85°C).

Parametric Equivalents share the same voltage rating, hold current, trip current, and time to trip parameters but may exhibit minor variations in initial resistance (Ri) and post-trip resistance (R1) within acceptable engineering tolerances, or differ in physical dimensions by less than 0.005" in length or width.

Non-Equivalent Parts such as NANOSMDC150F-2 are listed for reference only. This part operates at 1.5A hold current and 3A trip current, representing a higher current rating unsuitable for direct substitution in circuits designed for 750mA hold current operation.

Parameter Comparison

Engineering Selection Recommendations

NANOSMDC075F-2 (Littelfuse Inc.) is a direct electrical equivalent with identical voltage, hold current, trip current, and time to trip specifications. Physical dimensions are within 0.001" of the original part. Initial resistance is 10mOhms lower and post-trip resistance is 100mOhms lower, both within acceptable engineering tolerance. This part holds active product status with 55400 units in inventory and carries CSA, TUV, and UL certifications. Moisture sensitivity level is rated 2A (4 Weeks).

PTS12066V075 (Eaton - Electronics Division) maintains identical electrical specifications across all critical parameters. Physical dimensions vary by 0.002" in length and 0.002" in width, with thickness 0.005" greater than the original. This part is supplied in Tape & Reel packaging, holds active product status with 12107 units available, and carries cURus and TUV certifications. Moisture sensitivity level is rated 1 (Unlimited), indicating superior moisture resistance.

MF-NSMF075-2 (Bourns Inc.) is a parametric equivalent with identical electrical specifications and physical dimensions matching the original part exactly. Initial and post-trip resistance values are identical to PFNF.075.2. This part holds active product status with 27200 units in inventory, carries AEC-Q200 automotive qualification, and maintains cURus and TUV certifications. Moisture sensitivity level is rated 1 (Unlimited).

NANOSMDC150F-2 (Littelfuse Inc.) is not recommended as a direct substitute. This part operates at 1.5A hold current and 3A trip current, representing a higher current rating class. Time to trip is 300ms, significantly longer than the 100ms specification of PFNF.075.2. This part is listed for reference in applications requiring higher current protection thresholds.

Frequently Asked Questions (FAQ)

Q: Can NANOSMDC075F-2 be used as a direct replacement for PFNF.075.2?

A: Yes. Both parts share identical voltage (6V), hold current (750mA), trip current (1.5A), and time to trip (100ms) specifications. Physical dimensions are within 0.001" tolerance. The lower post-trip resistance of NANOSMDC075F-2 (300mOhms vs 400mOhms) is within acceptable engineering parameters for this component class.

Q: What is the difference between PTS12066V075 and PFNF.075.2?

A: Electrical specifications are identical. PTS12066V075 has physical dimensions 0.002" larger in length and width, with 0.005" greater thickness. Both parts are rated for the same voltage, current, and temperature range. The dimensional variation is within standard manufacturing tolerance for 1206 package components.

Q: Why is NANOSMDC150F-2 listed if it cannot substitute PFNF.075.2?

A: NANOSMDC150F-2 is listed as a reference part for applications requiring higher current protection. At 1.5A hold current versus 750mA, this part operates in a different current rating class and is not suitable for circuits designed around the 750mA specification of PFNF.075.2.

Q: Are all substitute parts RoHS compliant?

A: PFNF.075.2, NANOSMDC075F-2, and MF-NSMF075-2 are ROHS3 compliant. PTS12066V075 is RoHS compliant. All parts meet environmental compliance requirements for their respective standards.

Q: What packaging options are available for these parts?

A: PFNF.075.2 and PTS12066V075 are supplied in Tape & Reel (TR) packaging. NANOSMDC075F-2 and MF-NSMF075-2 are supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging selection depends on assembly process requirements and volume specifications.

Q: Do all substitute parts operate across the same temperature range?

A: Yes. PFNF.075.2, NANOSMDC075F-2, PTS12066V075, and MF-NSMF075-2 all operate across -40°C to 85°C temperature range, ensuring thermal compatibility in equivalent applications.