Bourns 9230-60 47µH Axial Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9230-60 is a 47 µH unshielded molded inductor rated for 165 mA with 4.5Ω maximum DC resistance, designed for through-hole axial mounting. This component operates across -55°C to 125°C and features a ferrite core with ±10% inductance tolerance. The 9230-60 is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives with identical or compatible electrical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value
Inductance	47 µH
Inductance Tolerance	±10%
Current Rating	165 mA
DC Resistance (Max)	4.5Ω
Q Factor @ 2.5 MHz	45
Self-Resonant Frequency	20 MHz
Operating Temperature Range	-55°C to 125°C
Core Material	Ferrite
Shielding	Unshielded
Mounting Type	Through Hole Axial
Package Dimensions	0.095" Dia × 0.250" L (2.41mm × 6.35mm)

Substitute Part Grouping Explanation

Substitute parts for the 9230-60 are classified based on electrical parameter compatibility within the following criteria:

Direct Equivalent (Same Series): Parts maintaining identical inductance (47 µH), tolerance (±10%), DC resistance (4.5Ω max), core material (ferrite), shielding type (unshielded), and mounting configuration (through-hole axial). Current rating and temperature range may vary within acceptable operational limits.

Compatible Substitute (Cross-Manufacturer): Parts with matching inductance, tolerance, DC resistance, and core specifications, but differing in current rating, temperature range, or shielding characteristics. These parts are suitable when the application does not require the full current or temperature specifications of the original part, or when enhanced shielding is beneficial.

The following parameters are critical for substitution validity:

Inductance value and tolerance
DC resistance
Core material type
Mounting configuration
Package footprint compatibility

Parameter Comparison

Parameter	9230-60 (Main)	9230-60-RC (Direct)	1025-60K (Compatible)	SC30470KT (Compatible)
Manufacturer	Bourns Inc.	Bourns Inc.	Delevan	TE Connectivity
Inductance	47 µH	47 µH	47 µH	47 µH
Tolerance	±10%	±10%	±10%	±10%
Current Rating	165 mA	165 mA	110 mA	198 mA
DC Resistance (Max)	4.5Ω	4.5Ω	4.5Ω	4.5Ω
Q @ 2.5 MHz	45	45	45	45
Self-Resonant Frequency	20 MHz	20 MHz	20 MHz	20 MHz
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 105°C	-55°C to 100°C
Core Material	Ferrite	Ferrite	Ferrite	Not specified
Shielding	Unshielded	Unshielded	Unshielded	Shielded
Mounting Type	Through Hole Axial	Through Hole Axial	Through Hole Axial	Through Hole Axial
Package Dimensions	0.095" Dia × 0.250" L	0.095" Dia × 0.250" L	0.095" Dia × 0.250" L	0.165" Dia × 0.394" L
Product Status	Obsolete	Active	Active	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: Bourns 9230-60-RC

The 9230-60-RC is the direct equivalent replacement for the obsolete 9230-60. Both parts are manufactured by Bourns Inc. within the same 9230 series and maintain identical electrical specifications: 47 µH inductance, ±10% tolerance, 165 mA current rating, 4.5Ω DC resistance, and -55°C to 125°C operating range. The 9230-60-RC is active in production and ROHS3 compliant, addressing regulatory requirements for new designs. Packaging differs (bulk versus original specification), but electrical and mechanical compatibility is complete.

Secondary Substitute: Delevan 1025-60K

The 1025-60K provides electrical compatibility with matching inductance, tolerance, DC resistance, and core material specifications. This part is suitable for applications where the current requirement does not exceed 110 mA. The operating temperature range is reduced to -55°C to 105°C compared to the original 9230-60. The 1025-60K is part of the military-qualified MIL-PRF-M15305 series and remains active in production. Physical dimensions are identical to the 9230-60.

Tertiary Substitute: TE Connectivity SC30470KT

The SC30470KT maintains electrical compatibility in inductance, tolerance, and DC resistance specifications. This part offers a higher current rating of 198 mA, exceeding the original 165 mA specification. The SC30470KT features shielded construction, which may provide electromagnetic interference mitigation benefits in certain applications. Operating temperature is limited to -55°C to 100°C. Physical dimensions are larger (0.165" Dia × 0.394" L), requiring PCB layout verification for space-constrained applications. The SC30470KT is ROHS3 compliant and active in production.

Frequently Asked Questions (FAQ)

Q: Can the 9230-60-RC directly replace the obsolete 9230-60 without circuit modification?

A: Yes. The 9230-60-RC is electrically and mechanically identical to the 9230-60 across all critical parameters: inductance, tolerance, current rating, DC resistance, frequency response, and operating temperature. The only difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required.

Q: What is the primary limitation of the Delevan 1025-60K as a substitute?

A: The 1025-60K has a reduced current rating of 110 mA compared to the 9230-60's 165 mA specification. This part is suitable only for applications where the actual operating current does not exceed 110 mA. Additionally, the maximum operating temperature is 105°C versus 125°C for the original part. Verify application requirements before selection.

Q: Why is the TE Connectivity SC30470KT larger than the original 9230-60?

A: The SC30470KT measures 0.165" Dia × 0.394" L compared to the 9230-60's 0.095" Dia × 0.250" L. The larger package accommodates shielded construction and supports a higher current rating of 198 mA. PCB layout must be verified to confirm adequate space for this component before substitution.

Q: Does the shielded construction of the SC30470KT affect circuit performance?

A: Shielding reduces electromagnetic radiation and susceptibility to external interference. In applications sensitive to EMI, the SC30470KT may provide performance benefits. However, shielding does not alter the core electrical specifications (inductance, DC resistance, frequency response). Circuit behavior remains equivalent for unshielded versus shielded operation at the specified electrical parameters.

Q: Are all substitute parts RoHS compliant?

A: No. The 9230-60-RC and SC30470KT are ROHS3 compliant. The 1025-60K is RoHS non-compliant. For applications requiring RoHS compliance, select either the 9230-60-RC or SC30470KT.

Q: Can the 1025-60K be used in high-temperature applications?

A: The 1025-60K operates to a maximum of 105°C, which is 20°C below the original 9230-60 specification of 125°C. For applications requiring operation at temperatures above 105°C, the 1025-60K is not suitable. The 9230-60-RC maintains the full -55°C to 125°C range.

Q: What is the difference between the packaging specifications listed for the 1025-60K?

A: The 1025-60K is available in two packaging formats: Cut Tape (CT) and Tape & Reel (TR). Both formats contain identical components; packaging format affects only handling, storage, and automated assembly compatibility. Verify your assembly process requirements before selecting packaging type.

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