PFSM.030.2 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The PFSM.030.2 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 60V maximum voltage with a 300 mA hold current. This surface mount component is designed for overcurrent protection in electronic circuits and is currently in active production status. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified tolerances.

Substiute Parts

PFSM.030.2

SCHURTER Inc.In Stock: 1328PFSM.030.2 Datasheet

Current PartRFQ

2920L030DR

Littelfuse Inc.In Stock: 194012920L030DR Datasheet

DirectRFQ

0ZCF0030FF2C

Bel Fuse Inc.In Stock: 428450ZCF0030FF2C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PFSM.030.2 is determined by strict alignment of the following critical parameters:

• Voltage rating: 60V maximum
• Hold current (Ih): 300 mA maximum
• Trip current (It): 600 mA
• Time to trip: 3 seconds
• Post-trip resistance (R1): 4.8 Ohms maximum
• Operating temperature: -40°C to 85°C
• Surface mount configuration
• 2-SMD or 2920 (7351 Metric) package compatibility
• RoHS3 compliance

The substitute parts listed below meet all critical electrical parameters and package requirements. Physical dimensions may vary within acceptable tolerances for PCB assembly compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three components are active production parts with RoHS3 compliance and regulatory approvals from cURus and TUV. The 0ZCF0030FF2C from Bel Fuse includes AEC-Q200 automotive qualification, providing additional assurance for applications requiring automotive-grade reliability standards.

Physical dimension variations exist between the main part and substitute options. The PFSM.030.2 has a maximum thickness of 3.18mm, while the Littelfuse 2920L030DR and Bel Fuse 0ZCF0030FF2C are thinner at 1.25mm and 1.15mm respectively. PCB layout and component placement clearances must be verified to accommodate these thickness differences.

All electrical parameters—voltage rating, hold current, trip current, trip time, and post-trip resistance—are identical across all three parts, ensuring functional equivalence in circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 2920L030DR or 0ZCF0030FF2C be used as direct replacements for the PFSM.030.2?

A: Yes, both parts meet all critical electrical specifications. However, physical dimensions differ, particularly thickness. PCB footprint compatibility and component clearance must be verified before substitution.

Q: What is the significance of the 2920 (7351 Metric) package designation?

A: The 2920 package is a standardized surface mount form factor. The PFSM.030.2 uses a 2-SMD designation, while the substitute parts use the 2920 (7351 Metric) designation. Both are compatible with standard PCB assembly processes, though physical dimensions vary slightly.

Q: Are there differences in initial resistance (Ri) between these parts?

A: Yes. The PFSM.030.2 has a minimum initial resistance of 900 mOhms, while the 2920L030DR specifies 1.2 Ohms and the 0ZCF0030FF2C specifies 1 Ohm. These differences do not affect substitution eligibility, as post-trip resistance (4.8 Ohms maximum) is the critical parameter for circuit protection function.

Q: Which part has the best automotive qualification?

A: The 0ZCF0030FF2C from Bel Fuse includes AEC-Q200 certification, meeting automotive industry reliability standards. The other parts carry cURus and TUV approvals suitable for general industrial and consumer applications.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: The PFSM.030.2 has MSL listed as Not Applicable. The 2920L030DR and 0ZCF0030FF2C both specify MSL 2A (4 Weeks), indicating standard moisture handling requirements for surface mount components.