Bourns 9230-74 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9230-74 is a 180 µH unshielded molded inductor rated for 79 mA with 17Ohm maximum DC resistance, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 125°C and is tested at 790 kHz with a self-resonant frequency of 10 MHz.

Substiute Parts

9230-74

Bourns Inc.In Stock: 12439230-74 Datasheet

Current PartRFQ

1025-74K

API Delevan Inc.In Stock: 10171025-74K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Bourns 9230-74 is determined by strict equivalence across the following critical parameters:

• Inductance Value: 180 µH with ±10% tolerance
• DC Resistance: 17Ohm maximum
• Current Rating: Minimum 79 mA (substitute must support full rated current)
• Core Material: Ferrite unshielded construction
• Frequency Characteristics: Q factor of 30 @ 790 kHz; self-resonant frequency of 10 MHz
• Physical Form: Axial through-hole package with 0.095" diameter x 0.250" length
• Operating Temperature: Must support -55°C to 125°C range

The API Delevan 1025-74K meets the inductance, tolerance, DC resistance, core material, frequency characteristics, and physical dimensions. However, the current rating is 57 mA, which is below the 79 mA specification of the original part. The operating temperature range is -55°C to 105°C, which is narrower than the original -55°C to 125°C specification.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1025-74K is an active product with identical inductance, tolerance, DC resistance, core material, frequency characteristics, and physical dimensions to the obsolete Bourns 9230-74. The substitute part is suitable for applications where the current requirement does not exceed 57 mA and the operating temperature does not exceed 105°C.

For applications requiring the full 79 mA current rating or operation above 105°C, the API Delevan 1025-74K does not meet the original specifications. In such cases, alternative 180 µH ferrite axial inductors with higher current ratings and extended temperature ranges must be evaluated.

Both parts carry identical RoHS non-compliance and REACH unaffected status, with matching ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1025-74K directly replace the Bourns 9230-74 in all applications?

A: The 1025-74K is suitable only for applications operating at 57 mA or below and temperatures not exceeding 105°C. If your circuit requires the full 79 mA rating or operates above 105°C, this substitute does not meet the original specifications.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts are 0.095" diameter x 0.250" length axial through-hole components and are mechanically interchangeable on PCBs designed for the original part.

Q: What are the key differences between these inductors?

A: The primary differences are current rating (79 mA vs. 57 mA) and maximum operating temperature (125°C vs. 105°C). All other electrical and mechanical parameters are equivalent.

Q: Why is the Bourns 9230-74 obsolete?

A: The part is classified as obsolete by the manufacturer. The API Delevan 1025-74K is an active equivalent for applications within its current and temperature specifications.

Q: Are both parts RoHS compliant?

A: No. Both the Bourns 9230-74 and API Delevan 1025-74K are RoHS non-compliant.