HC5-3R3-R Equivalent & Substitute Parts

Part Overview

The HC5-3R3-R is a 3.3 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, rated for 11 A continuous current with a maximum DC resistance of 5.6 mOhm. This component is designed for surface mount applications in nonstandard package configurations. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

HC5-3R3-R

Eaton - Electronics DivisionIn Stock: 775HC5-3R3-R Datasheet

Current PartRFQ

HCF1305-3R3-R

Eaton - Electronics DivisionIn Stock: 257027HCF1305-3R3-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC5-3R3-R is based on the following critical electrical and mechanical parameters:

Inductance Value: Both the main part and substitute maintain 3.3 µH inductance at 100 kHz test frequency with ±20% tolerance, ensuring functional equivalence in circuits designed for this inductance specification.

Current Handling Capability: The substitute part HCF1305-3R3-R provides a higher continuous current rating of 13.2 A compared to the HC5-3R3-R's 11 A rating, allowing operation in applications requiring equal or lower current levels.

DC Resistance: The substitute exhibits lower DC resistance (4.9 mOhm Max versus 5.6 mOhm Max), resulting in reduced power dissipation and improved thermal performance in equivalent circuit applications.

Surface Mount Compatibility: Both components utilize identical surface mount package dimensions (12.50mm x 12.50mm), with the substitute featuring a slightly lower seated height (5.00mm versus 5.30mm), maintaining mechanical compatibility with standard PCB layouts.

Operating Temperature Range: The substitute supports an extended lower temperature limit (-40°C versus -25°C), providing broader environmental operating capability.

Product Status: The substitute HCF1305-3R3-R maintains active product status with established supply chain availability, addressing the obsolescence of the HC5-3R3-R.

Parameter Comparison

Engineering Selection Recommendations

The HCF1305-3R3-R is a direct functional substitute for the obsolete HC5-3R3-R based on matched inductance value, tolerance, and surface mount package dimensions. The substitute provides superior electrical performance through lower DC resistance and higher continuous current rating, enabling operation across a broader temperature range.

The substitute part maintains active product status with substantial inventory availability (256,921 pieces), ensuring procurement reliability for new designs and legacy system support. The component is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

The primary design consideration is the change from shielded to unshielded construction. Applications requiring electromagnetic shielding to prevent coupling with adjacent circuit elements must evaluate the unshielded drum core design of the substitute against specific EMI/RFI performance requirements. For applications where shielding is not a functional requirement, the HCF1305-3R3-R provides equivalent or superior performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the HCF1305-3R3-R directly replace the HC5-3R3-R in existing PCB layouts?

A: Yes. Both components share identical surface mount package dimensions (12.50mm x 12.50mm). The substitute features a maximum seated height of 5.00mm compared to 5.30mm for the original part, providing additional clearance margin in space-constrained applications.

Q: What is the impact of the shielded-to-unshielded design change?

A: The HC5-3R3-R features shielded construction, while the HCF1305-3R3-R uses an unshielded drum core design. Shielding reduces electromagnetic field radiation and susceptibility to external fields. Applications requiring EMI/RFI isolation must assess whether unshielded operation meets circuit performance specifications.

Q: Does the lower DC resistance of the substitute affect circuit operation?

A: The HCF1305-3R3-R exhibits 4.9 mOhm maximum DC resistance versus 5.6 mOhm for the HC5-3R3-R. Lower resistance reduces I²R power dissipation and thermal generation, improving efficiency. This change is beneficial for thermal management and does not negatively impact circuit functionality.

Q: Is the higher current rating of the substitute a concern?

A: No. The substitute's 13.2 A continuous current rating exceeds the original 11 A specification, providing additional design margin. Applications operating at or below 11 A experience no adverse effects from the higher-rated component.

Q: What are the compliance differences between the two parts?

A: The HCF1305-3R3-R is ROHS3 compliant and REACH unaffected. The HC5-3R3-R compliance status is not specified. For applications subject to ROHS3 or REACH regulations, the substitute ensures regulatory compliance.

Q: Are there temperature range considerations for substitution?

A: The substitute supports operation from -40°C to 125°C, compared to -25°C to 125°C for the original part. The extended lower temperature capability of the substitute provides additional environmental operating margin without limiting upper temperature performance.

Q: What is the saturation current difference between the parts?

A: The HC5-3R3-R has Isat of 13 A, while the HCF1305-3R3-R has Isat of 12.5 A. Both values exceed their respective continuous current ratings, maintaining adequate saturation margin for normal circuit operation. The 0.5 A difference does not impact practical application performance.