Bourns 9230-40 6.8µH Through-Hole Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9230-40 is a 6.8 µH unshielded molded inductor rated for 245 mA with 2Ω 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 9230 series represents a legacy ferrite-core inductor platform that requires active alternatives for new designs and component replenishment.

Key Parameters

Parameter	Value
Inductance	6.8 µH
Inductance Tolerance	±10%
Current Rating	245 mA
DC Resistance (Max)	2Ω
Q Factor @ 7.9 MHz	50
Self-Resonant Frequency	60 MHz
Operating Temperature Range	-55°C to 125°C
Shielding	Unshielded
Core Material	Ferrite
Mounting Type	Through Hole Axial
Package Dimensions	0.095" Dia × 0.250" L (2.41mm × 6.35mm)

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9230-40 is determined by the following critical parameters: inductance value (6.8 µH ±10%), DC resistance (2Ω maximum), current rating capability, mounting type (through-hole axial), and operating temperature range. Parts meeting these core electrical specifications are classified as direct or similar substitutes. Variations in shielding, core material, and current rating above the minimum 245 mA threshold are permitted within the substitute category, as these represent functional enhancements or alternative implementations of the same inductance function. Temperature range deviations below the original -55°C to 125°C specification are noted but do not disqualify substitution in applications operating within the substitute part's declared range.

Parameter Comparison

Parameter	Bourns 9230-40	Bourns 9230-40-RC	API Delevan 1025-40K	TE Connectivity SC306R8KT
Inductance	6.8 µH	6.8 µH	6.8 µH	6.8 µH
Inductance Tolerance	±10%	±10%	±10%	±10%
Current Rating (mA)	245	245	185	298
DC Resistance (Max)	2Ω	2Ω	2Ω	2Ω
Q @ 7.9 MHz	50	50	50	50
Self-Resonant Frequency	60 MHz	60 MHz	60 MHz	60 MHz
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	-55°C to 105°C	-55°C to 100°C
Shielding	Unshielded	Unshielded	Unshielded	Shielded
Core Material	Ferrite	Ferrite	Iron	Not Specified
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
RoHS Status	Non-compliant	ROHS3 Compliant	Non-compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

Bourns 9230-40-RC is the primary direct substitute. It maintains identical electrical specifications and physical dimensions while offering active product status and ROHS3 compliance. This part is recommended for applications requiring regulatory compliance and long-term component availability.

API Delevan 1025-40K serves as an alternative substitute for applications with current requirements not exceeding 185 mA. The iron core construction and military-grade specifications (MIL-PRF-M15305, MS75084) make this part suitable for defense and aerospace applications. The reduced operating temperature maximum of 105°C must be evaluated against application requirements. RoHS non-compliance status should be considered for regulated markets.

TE Connectivity SC306R8KT is suitable for applications where shielding is required or beneficial. The higher current rating of 298 mA provides additional margin. Physical dimensions are larger (0.165" Dia × 0.394" L), requiring PCB layout verification. Operating temperature maximum of 100°C is the most restrictive among substitutes. ROHS3 compliance and active product status support long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 9230-40-RC directly replace the obsolete 9230-40?

A: Yes. The 9230-40-RC maintains identical inductance (6.8 µH ±10%), current rating (245 mA), DC resistance (2Ω max), and physical dimensions (0.095" Dia × 0.250" L). It is the direct equivalent with active product status and improved compliance profile.

Q: What is the primary difference between the Bourns 9230-40-RC and API Delevan 1025-40K?

A: The API Delevan 1025-40K has a reduced current rating of 185 mA versus 245 mA for the Bourns part. It uses an iron core instead of ferrite and operates to a maximum of 105°C instead of 125°C. It is suitable only for applications with current requirements below 185 mA.

Q: Why is the TE Connectivity SC306R8KT larger than the other parts?

A: The SC306R8KT features shielding, which requires additional physical volume. Its dimensions are 0.165" Dia × 0.394" L compared to 0.095" Dia × 0.250" L for the unshielded alternatives. PCB layout must accommodate this larger footprint.

Q: Which substitute part has the best compliance certifications?

A: Both the Bourns 9230-40-RC and TE Connectivity SC306R8KT are ROHS3 compliant with active product status. The API Delevan 1025-40K is RoHS non-compliant. For regulated applications, the Bourns or TE Connectivity parts are recommended.

Q: Can I use the TE Connectivity SC306R8KT in place of the Bourns 9230-40?

A: Electrical substitution is valid (same inductance, tolerance, DC resistance, and Q factor). However, the larger physical dimensions require PCB layout verification. The maximum operating temperature of 100°C is lower than the original 125°C specification. Shielding characteristics differ, which may affect circuit performance in EMI-sensitive applications.

Q: What is the temperature derating consideration for the API Delevan 1025-40K?

A: The API Delevan 1025-40K operates to a maximum of 105°C, compared to 125°C for the Bourns 9230-40. Applications requiring operation above 105°C must use the Bourns 9230-40-RC or evaluate thermal management modifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message