4590R-684K Equivalent & Substitute Parts

Part Overview

The 4590R-684K is a 680 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1.08 A with a maximum DC resistance of 570 mOhm. This through-hole axial component operates across the temperature range of -55°C to 125°C and maintains ROHS3 compliance. The part is currently active in production with 741 pieces available in stock. Identifying equivalent substitute parts becomes necessary when managing supply chain continuity, optimizing procurement costs, or addressing inventory constraints while maintaining circuit performance specifications.

Substiute Parts

4590R-684K

API Delevan Inc.In Stock: 8094590R-684K Datasheet

Current PartRFQ

AIAP-03-681K

Abracon LLCIn Stock: 2953AIAP-03-681K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4590R-684K must meet the following critical parameters to ensure functional compatibility:

Core Substitution Criteria:

• Inductance value: 680 µH with ±10% tolerance
• Current rating: Minimum 1.05 A (matched or exceeded)
• Current saturation: Adequate margin above operating conditions
• DC Resistance: Maximum 570 mOhm to preserve circuit performance
• Mounting configuration: Through-hole axial package
• Operating temperature range: -55°C to 125°C coverage
• Regulatory compliance: ROHS3 compliant

The AIAP-03-681K meets these substitution requirements with equivalent inductance, comparable current rating (1.05 A), lower DC resistance (548 mOhm), and identical operating temperature range. Both components feature unshielded wirewound construction suitable for through-hole axial mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 4590R-684K and AIAP-03-681K are active production components with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for modern electronics manufacturing. The AIAP-03-681K demonstrates superior electrical characteristics with lower DC resistance (548 mOhm vs 570 mOhm), providing reduced power dissipation in applications operating at or near the current rating threshold. Physical dimensions are functionally equivalent with negligible differences (0.006" diameter variation, 0.002" length difference), ensuring PCB layout compatibility. Selection between these parts should consider supply availability, procurement lead times, and packaging requirements (bulk vs tray).

Frequently Asked Questions (FAQ)

Q: Can AIAP-03-681K directly replace 4590R-684K in existing assemblies? A: Yes. Both components share identical inductance (680 µH ±10%), equivalent current ratings (1.05 A vs 1.08 A), matching temperature ranges (-55°C to 125°C), and compatible through-hole axial packaging. Physical dimensions are within acceptable PCB layout tolerances.

Q: What is the impact of the 22 mOhm DC resistance difference? A: The AIAP-03-681K's lower DC resistance (548 mOhm vs 570 mOhm) results in reduced I²R power loss. For a 1 A load, this represents a 0.022 W difference, providing marginal thermal benefit in power-sensitive applications.

Q: Are there packaging considerations when switching between these parts? A: Yes. The 4590R-684K ships in bulk packaging, while the AIAP-03-681K uses tray packaging. Verify your assembly process compatibility with the tray format, particularly for automated pick-and-place operations.

Q: Do both parts meet the same regulatory standards? A: Yes. Both are ROHS3 compliant and REACH unaffected, meeting standard electronics industry compliance requirements for EU and international markets.

Q: What core material difference exists between these inductors? A: The 4590R-684K specifies ferrite core material, while the AIAP-03-681K does not explicitly identify core material in the provided specification. Both deliver equivalent inductance and saturation characteristics within the stated parameters.