Equivalent & Substitute Parts for MF72-004D13

Part Overview

The MF72-004D13 is an Inrush Current Limiter (ICL) manufactured by Cantherm, rated for 4 Ohms ±20% at 5 A with a 0.610" (15.50mm) diameter form factor. This component is classified as Active product status with full ROHS3 compliance and REACH unaffected designation. Identifying equivalent substitute parts ensures continuity in design implementations where the primary part may face supply constraints or require alternative sourcing options while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

MF72-004D13

CanthermIn Stock: 1378MF72-004D13 Datasheet

Current PartRFQ

B57211P0409M301

EPCOS - TDK ElectronicsIn Stock: 3966B57211P0409M301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the MF72-004D13 is determined by strict equivalence across the following critical parameters:

• Electrical Characteristics: Resistance value (4 Ohms) and tolerance (±20%) must be identical. Maximum steady-state current rating (5 A) must be equal or greater. Resistance at operating current (120 mOhms nominal) establishes thermal performance baseline.
• Mechanical Compatibility: Lead spacing (0.295" / 7.50mm) is fixed for PCB mounting. Diameter variance is acceptable within the dimensional range that accommodates the same mounting footprint and thermal dissipation requirements.
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status are mandatory for equivalent substitution in regulated markets.

The identified substitute part B57211P0409M301 meets all critical electrical parameters while maintaining the required lead spacing and compliance certifications. The diameter reduction from 15.50mm to 13.00mm represents a secondary physical characteristic that does not compromise functional equivalence for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both the MF72-004D13 and B57211P0409M301 carry Active product status, indicating current manufacturing support and availability. Both parts satisfy ROHS3 compliance requirements and maintain REACH unaffected designation, suitable for implementation in regulated industries including automotive, industrial, and consumer electronics applications.

The B57211P0409M301 substitute demonstrates 118 mOhms resistance at operating current compared to 120 mOhms for the original part, representing a 1.7% variance within acceptable thermal performance boundaries. The reduced diameter (13.00mm versus 15.50mm) results in a more compact form factor while preserving all critical electrical parameters and lead spacing geometry.

Selection between these parts depends on inventory availability, lead time requirements, and geometric space constraints within the final assembly. Both parts are functionally equivalent for applications requiring 4 Ohm inrush current limiting at 5 A steady-state conditions.

Frequently Asked Questions (FAQ)

Q: Can the B57211P0409M301 be used as a direct replacement for MF72-004D13?

A: Yes. Both parts share identical electrical specifications (4 Ohms ±20%, 5 A maximum steady-state current), equivalent lead spacing (7.50mm), and matching regulatory compliance certifications (ROHS3, REACH unaffected). The 2.50mm reduction in diameter does not affect electrical performance or PCB mounting compatibility.

Q: What accounts for the resistance variance at operating current between these parts?

A: The MF72-004D13 exhibits 120 mOhms while B57211P0409M301 measures 118 mOhms at operating current. This 2 mOhm difference (1.7% variance) falls within normal manufacturing tolerances and produces negligible thermal performance impact in practical applications.

Q: Are there any compliance differences between these parts?

A: No. Both parts carry identical regulatory designations: ROHS3 Compliant, REACH Unaffected, and EAR99 ECCN classification. They are interchangeable from a compliance standpoint in regulated markets.

Q: Does the smaller diameter of B57211P0409M301 affect thermal performance?

A: The resistance at operating current differs by only 2 mOhms (1.7%), indicating negligible thermal performance variance. The reduced diameter may provide a slight thermal dissipation advantage in some applications due to improved surface-area-to-volume ratio characteristics.

Q: What should be verified before implementing a substitute part?

A: Confirm that the physical form factor (13.00mm diameter for B57211P0409M301) fits within available PCB layout space. Verify that lead spacing (7.50mm, identical for both parts) aligns with existing PCB footprints. Both parts are functionally equivalent without additional validation requirements.