Equivalent & Substitute Parts for 73F223AF-RC

Part Overview

The Bourns 73F223AF-RC is a 2.2 mH unshielded drum core wirewound inductor rated for 150 mA with 12Ohm maximum DC resistance. This through-hole axial component operates across -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts with matching or superior electrical characteristics are necessary for ongoing design support and procurement continuity.

Substiute Parts

73F223AF-RC

Bourns Inc.In Stock: 102173F223AF-RC Datasheet

Current PartRFQ

4590R-225J

API Delevan Inc.In Stock: 9834590R-225J Datasheet

SimilarRFQ

B82145A1225J000

EPCOS - TDK ElectronicsIn Stock: 10141B82145A1225J000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73F223AF-RC is determined by the following mandatory parameters:

• Inductance value: 2.2 mH (exact match required)
• Inductance tolerance: ±5% (matching tolerance)
• Core type: Ferrite drum core, wirewound (same construction)
• Shielding: Unshielded (same configuration)
• Mounting: Through hole axial (same form factor)
• Current rating: Must meet or exceed 150 mA minimum
• DC resistance: Must not exceed 12Ohm maximum
• Operating temperature range: Must cover or exceed -55°C to 105°C

The identified substitute parts meet these core electrical and mechanical criteria, enabling direct functional replacement in applications designed for the 73F223AF-RC.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The API Delevan 4590R-225J provides the highest current rating margin (615 mA versus 150 mA requirement) and lowest DC resistance (1.76Ohm), making it suitable for applications requiring maximum thermal efficiency and current headroom. Extended operating temperature range to 125°C provides additional thermal margin.

The EPCOS B82145A1225J000 offers moderate current rating improvement (250 mA) with superior DC resistance (8Ohm) compared to the original specification. This part maintains closer electrical characteristics to the 73F223AF-RC while providing active product status. Operating temperature extends to 125°C.

Both substitutes exceed the original part's current and temperature specifications, enabling direct replacement with improved performance margins.

Frequently Asked Questions (FAQ)

Q: Can the 4590R-225J or B82145A1225J000 directly replace the 73F223AF-RC?

A: Yes. Both substitute parts match the mandatory electrical parameters: 2.2 mH inductance, ±5% tolerance, ferrite drum core construction, unshielded configuration, and through-hole axial mounting. Both exceed the original 150 mA current rating and operate within or above the -55°C to 105°C temperature range.

Q: What are the physical size differences?

A: The 73F223AF-RC measures 0.440" diameter × 0.625" length. The 4590R-225J measures 0.455" diameter × 0.900" length (slightly larger). The B82145A1225J000 measures 0.256" diameter × 0.472" length (significantly smaller). Physical dimensions must be verified against PCB layout constraints before selection.

Q: Which substitute has the lowest DC resistance?

A: The 4590R-225J has 1.76Ohm maximum DC resistance, compared to 12Ohm for the original and 8Ohm for the B82145A1225J000. Lower DC resistance reduces power dissipation and heat generation.

Q: Are both substitutes RoHS compliant?

A: Yes. Both the 4590R-225J and B82145A1225J000 are ROHS3 compliant, matching the original part's regulatory status.

Q: What is the difference in current rating between the substitutes?

A: The 4590R-225J is rated for 615 mA, while the B82145A1225J000 is rated for 250 mA. Both exceed the original 150 mA requirement. Selection depends on application current demands and thermal considerations.