Bourns 9230-62 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9230-62 is a 56 µH unshielded molded inductor rated for 145 mA with a maximum DC resistance of 5.7 Ohm, designed for through-hole axial mounting. This component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for ongoing design support and procurement continuity.

Substiute Parts

9230-62

Bourns Inc.In Stock: 9959230-62 Datasheet

Current PartRFQ

1025-62K

API Delevan Inc.In Stock: 8011025-62K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9230-62 is determined by the following critical parameters:

• Inductance Value: Must match 56 µH within the specified ±10% tolerance band
• DC Resistance: Must not exceed 5.7 Ohm maximum
• Current Rating: Must support the application's current requirements; lower-rated substitutes require circuit re-evaluation
• Core Material & Shielding: Must remain ferrite-based and unshielded to maintain electromagnetic characteristics
• Mounting & Package: Must be through-hole axial configuration with matching physical dimensions
• Frequency Characteristics: Q factor and self-resonant frequency must remain consistent for signal integrity

The API Delevan 1025-62K meets the core electrical and mechanical substitution criteria, with the exception of current rating, which is specified at 100 mA versus the original 145 mA.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1025-62K serves as a functional substitute for the obsolete Bourns 9230-62 based on matching inductance, DC resistance, Q factor, and self-resonant frequency specifications. The substitute maintains active product status, ensuring long-term availability and supply chain continuity.

Two design considerations apply:

Current Rating Differential: The 1025-62K is rated for 100 mA maximum current, compared to the original 145 mA specification. Applications operating at currents between 100 mA and 145 mA require circuit analysis to confirm acceptable performance margins.

Operating Temperature Range: The substitute operates to 105°C maximum, versus the original 125°C upper limit. Applications requiring operation above 105°C are not suitable for this substitute without thermal management modifications.

Both parts carry identical RoHS non-compliance and REACH unaffected certifications, maintaining regulatory consistency in legacy designs.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1025-62K replace the Bourns 9230-62 in all applications?

A: The 1025-62K is electrically equivalent for inductance, DC resistance, and frequency characteristics. However, applications requiring the full 145 mA current rating or operation above 105°C must be re-evaluated. Circuits operating below 100 mA and within the -55°C to 105°C temperature window are directly compatible.

Q: What are the critical parameters for inductor substitution?

A: Inductance value, inductance tolerance, DC resistance, current rating, core material, shielding configuration, and physical dimensions determine substitution eligibility. Frequency characteristics (Q factor and self-resonant frequency) must also remain consistent to preserve circuit performance.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the Bourns 9230-62 and API Delevan 1025-62K measure 0.095" diameter by 0.250" length (2.41 mm × 6.35 mm), ensuring identical through-hole axial mounting compatibility on PCBs.

Q: What is the significance of the ±10% inductance tolerance?

A: The ±10% tolerance defines the acceptable inductance range: 50.4 µH to 61.6 µH. Both parts meet this specification, ensuring functional equivalence in filter, matching, and impedance-matching circuits where inductance precision is critical.

Q: Why is the Bourns 9230-62 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The API Delevan 1025-62K, with active product status, provides a path for design continuity and future procurement without supply interruption.