Bourns 9310-52 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9310-52 is a 33 µH unshielded drum core wirewound inductor rated for 250 mA with a maximum DC resistance of 3Ohm. This through-hole axial component operates across a temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance values in compact form factors.

The 9310-52 is classified as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and legacy system support.

Substiute Parts

9310-52

Bourns Inc.In Stock: 11499310-52 Datasheet

Current PartRFQ

1537-51K

API Delevan Inc.In Stock: 11741537-51K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9310-52 is determined by the following critical parameters:

• Inductance Value: Must be 33 µH with ±10% tolerance
• Current Rating: Substitute must support minimum 250 mA operation
• DC Resistance: Maximum 3Ohm specification must be maintained
• Shielding Configuration: Unshielded design requirement
• Frequency Characteristics: Q factor of 65 @ 2.5MHz and self-resonant frequency of 19MHz
• Operating Temperature: -55°C to 105°C range compatibility
• Mounting and Package: Through-hole axial configuration with matching physical dimensions (0.156" Dia x 0.375" L)

The API Delevan 1537-51K meets these substitution criteria with the exception of current rating, which is specified at 185 mA. This represents a reduced current capacity compared to the original 250 mA specification.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1537-51K is an active product suitable for substitution in applications where the reduced current rating of 185 mA is acceptable. The substitute maintains electrical performance across all frequency-dependent parameters and operates within the identical temperature range.

Both components share non-compliant RoHS status and are unaffected by REACH regulations. The 1537-51K is available in tape and reel packaging, whereas the original 9310-52 specification does not indicate packaging format.

Selection of the 1537-51K requires circuit-level verification that peak and continuous current demands do not exceed 185 mA. Applications operating at or near the original 250 mA specification require alternative sourcing or design modification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537-51K directly replace the Bourns 9310-52 in all applications?

A: Direct replacement is possible only in circuits where the maximum current requirement does not exceed 185 mA. The 1537-51K is rated for 185 mA versus the original 250 mA specification. All other electrical and mechanical parameters are equivalent.

Q: What is the significance of the current rating difference?

A: Current rating defines the maximum continuous current the inductor can handle without exceeding design limits. The 1537-51K's 185 mA rating is 26% lower than the original 250 mA. Exceeding this rating may result in excessive heating and inductor failure.

Q: Are the physical dimensions identical?

A: Yes. Both components share the same axial package dimensions of 0.156" diameter by 0.375" length (3.96mm x 9.53mm), ensuring mechanical compatibility in through-hole PCB layouts.

Q: Do both parts meet the same frequency performance specifications?

A: Yes. Both the Bourns 9310-52 and API Delevan 1537-51K maintain a Q factor of 65 @ 2.5MHz and a self-resonant frequency of 19MHz.

Q: What is the difference between drum core and molded construction?

A: The Bourns 9310-52 uses drum core wirewound construction, while the API Delevan 1537-51K uses molded construction. Both are unshielded designs with identical inductance, tolerance, and frequency characteristics. Construction differences do not affect electrical substitution eligibility based on the provided parameters.

Q: Are there compliance or regulatory differences?

A: Both components are RoHS non-compliant and REACH unaffected. No compliance advantage exists between the two parts.