Bourns 9230-28 2.2µH Axial Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9230-28 is a 2.2 µH unshielded molded inductor rated for 550 mA with 400mOhm maximum DC resistance, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 125°C and is suitable for applications requiring ferrite-core inductors with standard axial packaging.

Substiute Parts

9230-28

Bourns Inc.In Stock: 8949230-28 Datasheet

Current PartRFQ

9230-28-RC

Bourns Inc.In Stock: 30279230-28-RC Datasheet

DirectRFQ

1025-28K

API Delevan Inc.In Stock: 51571025-28K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Bourns 9230-28 is determined by strict equivalence across the following critical parameters: inductance value (2.2 µH), tolerance (±10%), DC resistance (400mOhm maximum), frequency characteristics (Q @ 7.9MHz and self-resonant frequency), operating temperature range, mounting type (through-hole axial), and physical dimensions (0.095" Dia x 0.250" L).

Two substitute parts are identified:

Direct Equivalent (9230-28-RC): Identical electrical specifications and physical form factor. Differs only in product status (active vs. obsolete) and RoHS compliance status.

Similar Substitute (1025-28K): Meets all critical electrical parameters and physical dimensions. Differs in current rating (415 mA vs. 550 mA), core material (iron vs. ferrite), operating temperature maximum (105°C vs. 125°C), and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

9230-28-RC (Direct Equivalent): This part is the primary substitute for the obsolete 9230-28. It maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. Selection of this part eliminates obsolescence risk and provides regulatory compliance for new designs or production runs.

1025-28K (Similar Substitute): This part is suitable only for applications where the reduced current rating (415 mA vs. 550 mA) and lower maximum operating temperature (105°C vs. 125°C) are acceptable. The iron core material differs from the ferrite core of the main part. This part is specified to military standards (MIL-PRF-M15305, MS75084) and may be required for defense or aerospace applications. RoHS non-compliance status must be evaluated against project requirements.

Frequently Asked Questions (FAQ)

Q: Can 9230-28-RC be used as a direct replacement for 9230-28?

A: Yes. The 9230-28-RC is electrically and mechanically identical to the 9230-28. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What are the limitations of using 1025-28K as a substitute?

A: The 1025-28K has a lower current rating (415 mA vs. 550 mA) and a reduced maximum operating temperature (105°C vs. 125°C). Applications requiring the full 550 mA rating or operation above 105°C must use 9230-28-RC. The iron core material may also affect frequency response characteristics in specific circuit topologies.

Q: Are there packaging differences between the substitutes?

A: Yes. The 9230-28-RC is supplied in bulk packaging, while the 1025-28K is supplied in cut tape (CT) format. Both maintain identical axial form factors and through-hole mounting compatibility.

Q: Which substitute is recommended for new designs?

A: The 9230-28-RC is recommended for new designs. It provides full electrical equivalence, active product status, and ROHS3 compliance, eliminating obsolescence and regulatory concerns.

Q: Does core material affect circuit performance?

A: Core material differences (ferrite vs. iron) can affect frequency response, temperature stability, and saturation characteristics. Applications sensitive to these parameters should maintain ferrite-core selection (9230-28-RC) rather than substituting the iron-core 1025-28K.