AIAP-03-391K Equivalent & Substitute Parts

Part Overview

The AIAP-03-391K is a 390 µH unshielded wirewound inductor manufactured by Abracon LLC, rated for 1.39 A maximum current with a DC resistance of 281mOhm. 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 749 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

AIAP-03-391K

Abracon LLCIn Stock: 797AIAP-03-391K Datasheet

Current PartRFQ

4590R-394K

API Delevan Inc.In Stock: 26954590R-394K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 4590R-394K from API Delevan Inc. qualifies as a substitute based on the following alignment of critical parameters:

• Inductance Value: Both parts specify 390 µH with ±10% tolerance
• Current Rating: The substitute provides 1.52 A, which exceeds the main part's 1.39 A requirement
• DC Resistance: The substitute's 288mOhm maximum is within acceptable range relative to the main part's 281mOhm
• Mounting and Package: Both are through-hole axial components with compatible physical dimensions (11.40mm vs 11.55mm diameter; 22.90mm vs 22.86mm length)
• Operating Temperature: Both operate across -55°C to 125°C
• Compliance: Both maintain ROHS3 compliance and REACH unaffected status
• Inductance Test Frequency: Both measured at 1 kHz

Parameter Comparison

Engineering Selection Recommendations

Both the AIAP-03-391K and 4590R-394K maintain active product status with full regulatory compliance. The 4590R-394K provides higher current capacity (1.52 A versus 1.39 A) and features a ferrite drum core construction compared to the standard wirewound design of the main part. Physical dimensions are equivalent within manufacturing tolerances for through-hole PCB mounting. DC resistance values differ by 7mOhm, which remains within acceptable substitution parameters for most circuit applications. Selection between these parts depends on component availability and specific thermal or current margin requirements in the target application.

Frequently Asked Questions (FAQ)

Q: Can the 4590R-394K directly replace the AIAP-03-391K in existing designs?

A: Yes. Both parts share identical inductance values (390 µH ±10%), equivalent operating temperature ranges (-55°C to 125°C), and compatible through-hole axial packaging. Physical dimensions are within tolerance for standard PCB footprints.

Q: What is the significance of the higher current rating on the substitute part?

A: The 4590R-394K's 1.52 A rating exceeds the AIAP-03-391K's 1.39 A requirement, providing additional thermal margin in applications operating near maximum current specifications.

Q: How do the DC resistance values affect substitution?

A: The 4590R-394K specifies 288mOhm maximum versus 281mOhm for the main part. This 7mOhm difference represents approximately 2.5% variance and is acceptable for general-purpose inductor applications where precise resistance matching is not a critical design parameter.

Q: Are there differences in core material between these parts?

A: The AIAP-03-391K uses standard wirewound construction, while the 4590R-394K employs a ferrite drum core with wirewound design. Both achieve the same inductance specification and operating characteristics required for substitution.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the AIAP-03-391K and 4590R-394K are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.

Q: What packaging considerations apply to these axial components?

A: Both parts are through-hole axial inductors with dimensions of approximately 11.4-11.6mm diameter and 22.9mm length. They are compatible with standard PCB hole spacing and do not require design modifications for mechanical substitution.