AIAP-03-331K Equivalent & Substitute Parts

Part Overview

The AIAP-03-331K is a 330 µH unshielded wirewound inductor manufactured by Abracon LLC, rated for 1.51 A maximum current with 212mOhm DC resistance. This through-hole axial component operates across -55°C to 125°C and is ROHS3 compliant. The part is currently active in production with 647 units in stock. Substitute parts are identified when equivalent inductance values, current ratings, and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

AIAP-03-331K

Abracon LLCIn Stock: 754AIAP-03-331K Datasheet

Current PartRFQ

4590R-334K

API Delevan Inc.In Stock: 14394590R-334K Datasheet

MFR RecommendedRFQ

5900-331-RC

Bourns Inc.In Stock: 35495900-331-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AIAP-03-331K is determined by the following criteria:

• Inductance Value: Must be 330 µH ±10% tolerance
• Current Rating: Must meet or exceed 1.51 A
• DC Resistance: Lower or equivalent DCR values are acceptable
• Mounting Type: Through hole axial configuration required
• Shielding: Unshielded specification maintained
• Operating Temperature Range: Must support -55°C minimum and 125°C maximum
• Compliance: ROHS3 compliance required

Two substitute parts meet these electrical and mechanical parameters: the 4590R-334K (API Delevan Inc.) and the 5900-331-RC (Bourns Inc.).

Parameter Comparison

Engineering Selection Recommendations

4590R-334K (API Delevan Inc.): This substitute provides higher current rating (1.61 A vs. 1.51 A) with slightly elevated DC resistance (257mOhm vs. 212mOhm). Physical dimensions are within 0.006" variance. Operating temperature range matches the main part (-55°C to 125°C). ROHS3 and REACH compliance are maintained. This part is suitable for applications where the increased current capacity is beneficial or where the slightly higher DCR is acceptable.

5900-331-RC (Bourns Inc.): This substitute has a lower current rating (1.2 A vs. 1.51 A) and higher DC resistance (285mOhm vs. 212mOhm). Operating temperature maximum is reduced to 105°C, limiting use in applications requiring the full -55°C to 125°C range. Physical dimensions are within 0.004" variance. ROHS3 and REACH compliance are maintained. This part is suitable only for applications operating at or below 105°C with current requirements not exceeding 1.2 A.

Frequently Asked Questions (FAQ)

Q: Can the 4590R-334K replace the AIAP-03-331K in all applications?

A: The 4590R-334K meets all electrical and mechanical substitution criteria. The higher current rating (1.61 A) and full temperature range (-55°C to 125°C) make it compatible. The increased DCR (257mOhm vs. 212mOhm) may affect circuit performance in applications sensitive to resistance changes; verify circuit tolerance to the 45mOhm difference.

Q: Is the 5900-331-RC suitable for high-temperature applications?

A: No. The 5900-331-RC maximum operating temperature is 105°C, which is 20°C below the AIAP-03-331K specification. Applications requiring operation at 106°C to 125°C must use the main part or the 4590R-334K substitute.

Q: What is the impact of different DC resistance values?

A: DC resistance affects power dissipation and voltage drop across the inductor. The AIAP-03-331K has 212mOhm, the 4590R-334K has 257mOhm (+45mOhm), and the 5900-331-RC has 285mOhm (+73mOhm). In high-current applications, the increased resistance will generate additional heat. Circuit design must account for this difference.

Q: Are physical dimensions compatible for PCB layout?

A: All three parts are axial through-hole components with similar dimensions (approximately 0.45" diameter × 0.90" length). Dimensional variance is less than 0.006" across all axes, making them mechanically interchangeable in standard PCB layouts.

Q: What is the difference between wirewound and drum core construction?

A: The AIAP-03-331K uses wirewound construction without specified core material. The 4590R-334K and 5900-331-RC use drum core wirewound construction with ferrite cores. Both construction types achieve the same 330 µH inductance and ±10% tolerance at 1 kHz test frequency.

Q: Does packaging format affect substitution?

A: The AIAP-03-331K and 4590R-334K are supplied in bulk packaging, while the 5900-331-RC is supplied in tray packaging. Packaging format does not affect electrical or mechanical compatibility; it only impacts handling and storage procedures.