Bourns 9230-12 470nH Unshielded Molded Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9230-12 is a 470 nH unshielded molded inductor rated for 590 mA with a maximum DC resistance of 350 mOhm, designed for through-hole axial mounting. This component operates across a temperature range of -55°C to 105°C and features a phenolic core material. The 9230-12 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Inductance	470 nH
Tolerance	±10%
Current Rating	590 mA
DC Resistance (Max)	350 mOhm
Q @ Frequency	30 @ 25 MHz
Frequency - Self Resonant	340 MHz
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Material - Core	Phenolic
Shielding	Unshielded

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9230-12 is determined by the following critical parameters: inductance value (470 nH), tolerance (±10%), DC resistance (350 mOhm maximum), current rating capability, operating temperature range, mounting type (through hole axial), and physical dimensions (0.095" Dia x 0.250" L).

The substitute parts identified maintain these core electrical and mechanical specifications. The Bourns 9230-12-RC is a direct equivalent with identical electrical characteristics and physical form factor, differentiated only by packaging format and product status. The API Delevan 1025-12K provides functional equivalence with enhanced current rating capability (660 mA versus 590 mA) and extended upper operating temperature limit (125°C versus 105°C), while maintaining all other critical parameters within acceptable tolerance.

Parameter Comparison

Parameter	Bourns 9230-12	Bourns 9230-12-RC	API Delevan 1025-12K
Inductance	470 nH	470 nH	470 nH
Tolerance	±10%	±10%	±10%
Current Rating (Amps)	590 mA	590 mA	660 mA
DC Resistance (Max)	350 mOhm	350 mOhm	350 mOhm
Q @ Frequency	30 @ 25 MHz	30 @ 25 MHz	30 @ 25 MHz
Frequency - Self Resonant	340 MHz	340 MHz	330 MHz
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C
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)
Material - Core	Phenolic	Phenolic	Phenolic
Shielding	Unshielded	Unshielded	Unshielded

Engineering Selection Recommendations

The Bourns 9230-12-RC is the primary substitute for the obsolete Bourns 9230-12. Both components are manufactured by Bourns Inc. and provide identical electrical performance and physical form factor. The 9230-12-RC is currently in active production status with ROHS3 compliance, whereas the original 9230-12 is RoHS non-compliant and obsolete. The 9230-12-RC is available in bulk packaging and represents the direct replacement path for legacy designs.

The API Delevan 1025-12K serves as a functional alternative for applications requiring enhanced thermal performance or higher current capacity. This component is qualified to military specifications (MIL-PRF-M15305, MS75083) and operates to 125°C, providing a 35 mA higher current rating than the original specification. The 1025-12K is RoHS non-compliant and supplied in cut tape packaging. Selection of the 1025-12K is appropriate for designs with thermal margin requirements or military-grade component specifications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 9230-12-RC be used as a direct replacement for the Bourns 9230-12?

A: Yes. The 9230-12-RC maintains identical inductance (470 nH), tolerance (±10%), current rating (590 mA), DC resistance (350 mOhm maximum), operating temperature range (-55°C to 105°C), and physical dimensions (0.095" Dia x 0.250" L). The components are electrically and mechanically interchangeable. The primary difference is product status and packaging format.

Q: What are the key differences between the Bourns 9230-12-RC and the API Delevan 1025-12K?

A: Both components share the same inductance value, tolerance, DC resistance, and physical dimensions. The 1025-12K provides a higher current rating (660 mA versus 590 mA) and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). The 1025-12K is qualified to military specifications and has a slightly lower self-resonant frequency (330 MHz versus 340 MHz).

Q: Are there packaging considerations when selecting a substitute?

A: Yes. The Bourns 9230-12-RC is supplied in bulk packaging, while the API Delevan 1025-12K is supplied in cut tape format. Verify packaging compatibility with your procurement and assembly processes before selection.

Q: Can the API Delevan 1025-12K be used in applications originally designed for the Bourns 9230-12?

A: The 1025-12K is functionally compatible for applications operating within the original -55°C to 105°C temperature range and 590 mA current requirement. The enhanced specifications (higher current rating and extended temperature range) do not create incompatibility. Verify compliance with any military or aerospace qualification requirements specific to your application.

Q: What is the compliance status of each substitute option?

A: The Bourns 9230-12-RC is ROHS3 compliant. Both the original Bourns 9230-12 and the API Delevan 1025-12K are RoHS non-compliant. All three components are REACH unaffected and classified as EAR99 for export control purposes.

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