Bourns 9230-46 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9230-46 is a 12 µH unshielded molded inductor rated for 210 mA with a maximum DC resistance of 2.7Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The 9230 series represents a legacy product line that requires alternative sourcing for new production runs or maintenance applications.

Key Parameters

Parameter	Value
Inductance	12 µH
Inductance Tolerance	±10%
Current Rating	210 mA
DC Resistance (Max)	2.7Ohm
Q Factor @ 2.5MHz	45
Self Resonant Frequency	40 MHz
Operating Temperature Range	-55°C ~ 125°C
Shielding	Unshielded
Core Material	Ferrite
Mounting Type	Through Hole Axial
Package Dimensions	0.095" Dia x 0.250" L (2.41mm x 6.35mm)

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9230-46 is determined by the following critical parameters:

Primary Matching Criteria:

Inductance value: 12 µH (exact match required)
Inductance tolerance: ±10% (must match or be tighter)
DC resistance: 2.7Ohm maximum (must not exceed)
Mounting type: Through hole axial (physical compatibility)
Package dimensions: 0.095" Dia x 0.250" L (footprint compatibility)

Secondary Compatibility Factors:

Current rating: Substitute must meet or exceed 210 mA minimum requirement
Q factor @ 2.5MHz: 45 (performance baseline)
Self resonant frequency: 40 MHz (frequency response characteristic)
Operating temperature range: Must support application requirements
Shielding type: Unshielded (electromagnetic environment compatibility)

The API Delevan 1025-46K qualifies as a substitute based on matching inductance, tolerance, DC resistance, Q factor, self resonant frequency, mounting type, and package dimensions. The primary design consideration is the reduced current rating (160 mA versus 210 mA), which requires application-level verification to ensure the substitute operates within acceptable thermal and saturation margins for the intended circuit.

Parameter Comparison

Parameter	Bourns 9230-46	API Delevan 1025-46K	Match Status
Inductance	12 µH	12 µH	Exact Match
Inductance Tolerance	±10%	±10%	Exact Match
Current Rating (Amps)	210 mA	160 mA	Substitute Lower
DC Resistance (Max)	2.7Ohm	2.7Ohm	Exact Match
Q @ Freq (2.5MHz)	45	45	Exact Match
Frequency - Self Resonant	40 MHz	40 MHz	Exact Match
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	Substitute Narrower
Shielding	Unshielded	Unshielded	Exact Match
Mounting Type	Through Hole Axial	Through Hole Axial	Exact Match
Package Dimensions	0.095" Dia x 0.250" L	0.095" Dia x 0.250" L	Exact Match
Core Material	Ferrite	Iron	Different Material
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The API Delevan 1025-46K (1025 series) is an active product offering direct substitution for the obsolete Bourns 9230-46. Both components share identical inductance, tolerance, DC resistance, Q factor, self resonant frequency, and physical package dimensions, establishing functional equivalence for most applications.

Two design considerations require circuit-level evaluation:

Current Rating Differential: The substitute part is rated for 160 mA versus the original 210 mA specification. Applications operating at or near the 210 mA threshold must verify that circuit current demands remain within the 160 mA limit of the substitute, or implement current-limiting measures to ensure safe operation.

Operating Temperature Range: The substitute supports -55°C to 105°C versus the original -55°C to 125°C range. Applications requiring operation above 105°C must retain the original specification or identify alternative sources.

Core Material Difference: The original uses ferrite core material while the substitute uses iron core material. This difference may affect frequency response characteristics and electromagnetic coupling in sensitive circuit environments. Validation through prototype testing is recommended for noise-sensitive or high-frequency applications.

Both components carry identical RoHS non-compliance and REACH unaffected status, with matching ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1025-46K directly replace the Bourns 9230-46 in all applications?

A: Direct replacement is possible for applications where circuit current remains below 160 mA and operating temperature does not exceed 105°C. The core material difference (iron versus ferrite) may require validation in electromagnetically sensitive circuits.

Q: What is the primary limitation of the API Delevan substitute?

A: The reduced current rating of 160 mA compared to the original 210 mA specification is the primary design constraint. Applications must confirm that actual circuit current demands fall within this lower threshold.

Q: Are the physical packages identical?

A: Yes. Both components feature 0.095" diameter by 0.250" length axial through-hole packages, ensuring identical PCB footprint and mounting compatibility.

Q: How do the core materials affect circuit performance?

A: Ferrite and iron cores exhibit different frequency response and electromagnetic coupling characteristics. The ferrite core in the original part may provide superior high-frequency performance and lower electromagnetic interference. Applications sensitive to these factors should conduct comparative testing.

Q: What compliance certifications apply to the substitute part?

A: The API Delevan 1025-46K carries identical RoHS non-compliance and REACH unaffected status as the original Bourns component, with matching ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: Is the substitute part currently available?

A: Yes. The API Delevan 1025-46K is classified as an active product with 938 pieces in stock, providing reliable procurement availability compared to the obsolete Bourns 9230-46.

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