Bourns 9230-44 Equivalent & Substitute Parts

Part Overview

The Bourns 9230-44 is a 10 µH unshielded molded inductor rated for 180 mA with a maximum DC resistance of 3.7 Ohm, 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 fixed inductance in the 10 µH range with moderate current handling capability.

Key Parameters

Parameter	Value
Inductance	10 µH
Tolerance	±10%
Current Rating	180 mA
DC Resistance (DCR)	3.7 Ohm Max
Shielding	Unshielded
Material - Core	Ferrite
Mounting Type	Through Hole
Package / Case	Axial
Operating Temperature	-55°C ~ 125°C
Q @ Frequency	55 @ 7.9 MHz
Frequency - Self Resonant	50 MHz
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)

Substitute Part Grouping Explanation

Substitute parts for the Bourns 9230-44 are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Inductance value: 10 µH (exact match required)
Tolerance: ±10% (matching specification)
Current Rating: minimum 180 mA (equal or higher acceptable)
DC Resistance: maximum 3.7 Ohm (equal or lower acceptable)
Mounting Type: Through Hole Axial (exact match required)
Package dimensions: 0.095" Dia x 0.250" L (exact match required)
Operating Temperature Range: -55°C minimum, 125°C maximum (equal or wider range acceptable)

Two substitute parts meet these criteria: the Bourns 9230-44-RC (direct manufacturer equivalent with improved compliance status) and the API Delevan 1025-44K (cross-manufacturer alternative with military specification qualification).

Parameter Comparison

Parameter	Bourns 9230-44	Bourns 9230-44-RC	API Delevan 1025-44K
Inductance	10 µH	10 µH	10 µH
Tolerance	±10%	±10%	±10%
Current Rating (Amps)	180 mA	180 mA	144 mA
DC Resistance (DCR)	3.7 Ohm Max	3.7 Ohm Max	3.3 Ohm Max
Shielding	Unshielded	Unshielded	Unshielded
Material - Core	Ferrite	Ferrite	Iron
Q @ Frequency	55 @ 7.9 MHz	55 @ 7.9 MHz	55 @ 7.9 MHz
Frequency - Self Resonant	50 MHz	50 MHz	50 MHz
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)	0.095" Dia x 0.250" L (2.41mm x 6.35mm)	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant

Engineering Selection Recommendations

The Bourns 9230-44-RC is the primary substitute for the obsolete Bourns 9230-44. Both parts are manufactured by Bourns Inc., share identical electrical specifications, and maintain the same physical form factor. The 9230-44-RC is currently in active production status and achieves ROHS3 compliance, addressing regulatory requirements for new designs and production runs. This part is the direct functional equivalent with improved compliance posture.

The API Delevan 1025-44K serves as a secondary cross-manufacturer alternative. This part meets the core inductance, tolerance, and frequency specifications. However, the current rating is 144 mA, which is below the 180 mA specification of the primary part. The maximum operating temperature is limited to 105°C compared to 125°C for the Bourns parts. The API Delevan part qualifies under military specifications (MIL-PRF-M15305, MS75084) and features an iron core instead of ferrite, with lower DC resistance (3.3 Ohm Max). Selection of the 1025-44K requires verification that the 144 mA current rating and 105°C maximum temperature are acceptable for the intended application.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 9230-44-RC be used as a direct replacement for the obsolete Bourns 9230-44?

A: Yes. The 9230-44-RC is electrically and mechanically identical to the 9230-44, with the same inductance (10 µH), current rating (180 mA), DC resistance (3.7 Ohm Max), operating temperature range (-55°C to 125°C), and axial through-hole package dimensions (0.095" Dia x 0.250" L). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What are the limitations of using the API Delevan 1025-44K as a substitute?

A: The API Delevan 1025-44K has two parameter differences: current rating of 144 mA (versus 180 mA) and maximum operating temperature of 105°C (versus 125°C). Applications requiring the full 180 mA current capacity or operation above 105°C cannot use this part. The core material differs (iron vs. ferrite), which may affect frequency response characteristics in specific circuit applications.

Q: Are there packaging differences between the substitute parts?

A: The Bourns 9230-44 is supplied in standard packaging, while the Bourns 9230-44-RC is supplied in bulk packaging. The API Delevan 1025-44K is supplied in cut tape (CT) format. All three parts maintain identical physical dimensions and through-hole axial mounting compatibility.

Q: Which substitute part should be selected for new production designs?

A: The Bourns 9230-44-RC is the recommended choice for new production designs due to active product status, ROHS3 compliance, and complete electrical and mechanical equivalence to the original specification. The API Delevan 1025-44K is suitable only when current and temperature limitations are acceptable and military specification qualification is required.

Q: Do the substitute parts have the same frequency characteristics?

A: Yes. All three parts share identical Q factor (55 @ 7.9 MHz) and self-resonant frequency (50 MHz) specifications, indicating equivalent frequency response performance within the specified operating range.

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