4554R-4R7M Fixed Inductor Equivalent & Substitute Parts

Part Overview

The 4554R-4R7M is a 4.7 µH unshielded ferrite core inductor manufactured by API Delevan Inc., rated for 4.3 A continuous current with a maximum DC resistance of 30 mOhm. This through-hole radial component operates across the temperature range of -40°C to 85°C and is ROHS3 compliant. The part is currently active in production with 1018 units in stock.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting the same functional requirements. Alternative sources may be necessary due to supply constraints, lead time considerations, or design flexibility requirements.

Substiute Parts

4554R-4R7M

API Delevan Inc.In Stock: 10624554R-4R7M Datasheet

Current PartRFQ

AIUR-03-4R7M

Abracon LLCIn Stock: 1587AIUR-03-4R7M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4554R-4R7M is determined by the following critical parameters:

Electrical Equivalence:

• Inductance value must be 4.7 µH
• DC resistance must not exceed 30 mOhm
• Current rating must support the application requirement of 4.3 A continuous operation
• Q factor and self-resonant frequency must remain within acceptable circuit performance margins

Physical Compatibility:

• Mounting type must be through-hole
• Package configuration must be radial, vertical cylinder to ensure PCB footprint compatibility
• Shielding characteristic must be unshielded to maintain consistent EMI behavior

Environmental & Compliance:

• Operating temperature range must encompass the application environment
• RoHS3 compliance is mandatory for regulatory adherence
• REACH unaffected status must be maintained

The AIUR-03-4R7M from Abracon LLC meets these substitution criteria with the following considerations documented in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (4554R-4R7M): The 4554R-4R7M remains the preferred selection for applications requiring the full 4.3 A continuous current rating across the extended temperature range of -40°C to 85°C. This part is active in production with adequate inventory (1018 units) and maintains ROHS3 compliance with REACH unaffected status.

Substitute Part (AIUR-03-4R7M): The AIUR-03-4R7M from Abracon LLC is electrically equivalent for applications where the continuous current requirement does not exceed 2.5 A. This substitute is suitable when:

• Application current is limited to 2.5 A maximum continuous operation
• Operating environment remains within -25°C to 85°C
• PCB layout accommodates the slightly larger physical dimensions (0.354" diameter, 0.472" height)
• Tighter inductance tolerance (±10%) provides design margin benefit

Both parts maintain identical electrical performance at the test frequency (7.96 MHz) with matching Q factor (20) and self-resonant frequency (51 MHz). Both are ROHS3 compliant and REACH unaffected.

Physical Compatibility Verification: PCB design must accommodate the dimensional differences. The substitute part is 0.014" larger in diameter and 0.039" taller than the primary part. Verify clearance in the component mounting area and any height-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the AIUR-03-4R7M be used as a direct replacement for the 4554R-4R7M?

A: Direct replacement is possible only if the application current does not exceed 2.5 A continuous. The 4554R-4R7M is rated for 4.3 A, while the AIUR-03-4R7M is rated for 2.5 A. If your circuit requires the full 4.3 A capability, the primary part must be used. Both parts are physically compatible with through-hole radial mounting and identical electrical characteristics at the test frequency.

Q: What is the difference in current rating between these parts?

A: The 4554R-4R7M has a continuous current rating of 4.3 A with no saturation current specified. The AIUR-03-4R7M has a continuous current rating of 2.5 A with a saturation current (Isat) of 4.3 A. The saturation point indicates the current level at which the inductor begins to lose inductance due to core saturation. For applications operating below 2.5 A, the substitute part is suitable.

Q: Are there temperature range differences?

A: Yes. The 4554R-4R7M operates from -40°C to 85°C, while the AIUR-03-4R7M operates from -25°C to 85°C. If your application requires operation below -25°C, the primary part must be used. Both parts support the standard upper temperature limit of 85°C.

Q: Do these parts have the same physical footprint?

A: Both parts use through-hole radial, vertical cylinder packaging. However, dimensions differ slightly. The 4554R-4R7M is 0.340" diameter and 0.433" height, while the AIUR-03-4R7M is 0.354" diameter and 0.472" height. Verify PCB layout clearance before substitution, particularly in space-constrained designs.

Q: What is the inductance tolerance difference?

A: The 4554R-4R7M has ±20% tolerance, while the AIUR-03-4R7M has ±10% tolerance. The substitute part provides tighter tolerance control, which may benefit circuit performance in applications sensitive to inductance variation.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 4554R-4R7M and AIUR-03-4R7M are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What is the DC resistance specification?

A: Both parts have identical maximum DC resistance of 30 mOhm. This parameter determines power dissipation in the inductor and is critical for thermal management in high-current applications.

Q: Do these inductors have the same electrical performance at operating frequency?

A: Yes. Both parts have identical Q factor (20 @ 7.96 MHz) and self-resonant frequency (51 MHz), ensuring equivalent circuit performance at the test frequency and in the intended operating bandwidth.