Bourns 9230-88 680µH Axial Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9230-88 is a 680 µH unshielded molded inductor rated for 42 mA maximum current with 60Ω 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 inductors are commonly used in filtering, tuning, and energy storage circuits where ferrite core construction and compact axial packaging are required.

Key Parameters

Parameter	Value
Inductance	680 µH
Tolerance	±10%
Current Rating	42 mA
DC Resistance (DCR)	60Ω Max
Q Factor @ 790 kHz	30
Self Resonant Frequency	4.2 MHz
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole Axial
Core Material	Ferrite
Shielding	Unshielded

Substitute Part Grouping Explanation

Substitute parts for the Bourns 9230-88 must maintain electrical equivalence across the following critical parameters: inductance value (680 µH ±10%), DC resistance (60Ω maximum), Q factor (30 @ 790 kHz), and self-resonant frequency (4.2 MHz nominal). The current rating and operating temperature range define the application envelope; substitutes may have different ratings provided they meet or exceed the minimum requirements for the intended circuit.

Two substitute parts are identified:

API Delevan 1025-88K: Matches inductance, tolerance, DCR, Q factor, and self-resonant frequency. Current rating is 30 mA (lower than the main part's 42 mA). Operating temperature range is -55°C to 105°C (narrower than the main part). Unshielded construction matches the main part. Active product status.

TE Connectivity SC30681KT: Matches inductance, tolerance, DCR, and Q factor. Current rating is 54 mA (higher than the main part). Self-resonant frequency is 4 MHz (slightly lower). Operating temperature range is -55°C to 100°C. Shielded construction differs from the main part's unshielded design. Larger physical dimensions (0.165" Dia x 0.394" L vs. 0.095" Dia x 0.250" L). Active product status with RoHS3 compliance.

Parameter Comparison

Parameter	Bourns 9230-88	API Delevan 1025-88K	TE Connectivity SC30681KT
Inductance	680 µH	680 µH	680 µH
Tolerance	±10%	±10%	±10%
Current Rating (mA)	42	30	54
DC Resistance (Ω)	60 Max	60 Max	60 Max
Q @ 790 kHz	30	30	30
Self Resonant Frequency (MHz)	4.2	4.2	4.0
Operating Temperature Range	-55°C to 125°C	-55°C to 105°C	-55°C to 100°C
Shielding	Unshielded	Unshielded	Shielded
Package / Case	Axial	Axial	Axial
Size / Dimension	0.095" Dia x 0.250" L	0.095" Dia x 0.250" L	0.165" Dia x 0.394" L
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	Non-compliant	RoHS3 Compliant

Engineering Selection Recommendations

API Delevan 1025-88K is suitable for applications where the 30 mA current rating is sufficient and the narrower operating temperature range (-55°C to 105°C) meets circuit requirements. This part maintains identical physical dimensions and unshielded construction, enabling direct board-level substitution. The part is active and available in bulk packaging.

TE Connectivity SC30681KT is appropriate for applications requiring higher current capacity (54 mA) and RoHS3 compliance. The shielded construction provides electromagnetic isolation benefits in noise-sensitive circuits. The larger physical footprint requires PCB layout verification before implementation. This part is active and available in tape and box packaging. The slightly lower self-resonant frequency (4 MHz vs. 4.2 MHz) should be evaluated for frequency-dependent applications.

For applications operating above 105°C, neither substitute maintains the original part's full temperature range. The Bourns 9230-88 remains the only option for the complete -55°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1025-88K replace the Bourns 9230-88 in all applications?

A: The 1025-88K is electrically equivalent for inductance, tolerance, DCR, and Q factor. However, its 30 mA current rating is lower than the main part's 42 mA. Substitution is valid only if circuit current requirements do not exceed 30 mA. The operating temperature range is also narrower (-55°C to 105°C vs. -55°C to 125°C).

Q: What is the primary difference between the TE Connectivity SC30681KT and the Bourns 9230-88?

A: The SC30681KT features shielded construction versus the unshielded design of the 9230-88. This provides electromagnetic shielding benefits but increases physical size (0.165" Dia x 0.394" L vs. 0.095" Dia x 0.250" L). The current rating is higher (54 mA), and RoHS3 compliance is provided. The self-resonant frequency is slightly lower (4 MHz vs. 4.2 MHz).

Q: Can I use the TE Connectivity SC30681KT in a space-constrained PCB layout?

A: No. The SC30681KT has significantly larger dimensions than the original part. PCB layout verification is required to confirm adequate space before substitution.

Q: Which substitute part offers the best compliance profile?

A: The TE Connectivity SC30681KT is RoHS3 compliant, whereas both the Bourns 9230-88 and API Delevan 1025-88K are non-compliant. For new designs requiring RoHS compliance, the SC30681KT is the appropriate choice.

Q: Are there temperature limitations when selecting a substitute?

A: Yes. The API Delevan 1025-88K operates to 105°C maximum, and the TE Connectivity SC30681KT to 100°C maximum. The original Bourns 9230-88 operates to 125°C. For applications requiring the full -55°C to 125°C range, no active substitute is available.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message