Bourns 9310-40 Equivalent & Substitute Parts

Part Overview

The Bourns 9310-40 is a 15 µH unshielded drum core wirewound inductor rated for 370 mA with a maximum DC resistance of 1.4Ohm. 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 with moderate current handling.

The 9310-40 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

9310-40

Bourns Inc.In Stock: 10589310-40 Datasheet

Current PartRFQ

1537-40K

API Delevan Inc.In Stock: 8501537-40K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 9310-40 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must align for a part to function as a direct substitute:

• Inductance value: 15 µH (±10% tolerance)
• DC Resistance: 1.4Ohm maximum
• Shielding configuration: Unshielded
• Operating temperature range: -55°C ~ 105°C minimum
• Mounting type: Through hole
• Package configuration: Axial
• Physical dimensions: 0.156" Dia x 0.375" L (3.96mm x 9.53mm)
• Q factor and self-resonant frequency characteristics

The API Delevan 1537-40K meets these core electrical and mechanical requirements, though with a reduced current rating of 271 mA compared to the original 370 mA specification.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1537-40K is an active product with current manufacturing support, making it suitable for applications where the Bourns 9310-40 is no longer available. Both components share identical inductance, tolerance, DC resistance, Q factor, self-resonant frequency, and operating temperature specifications.

The primary design consideration is the current rating differential: the 1537-40K is rated for 271 mA versus the original 370 mA. Circuit designs operating at or below 271 mA can directly substitute the 1537-40K without modification. Applications requiring the full 370 mA rating must evaluate alternative inductors meeting the higher current specification.

Both parts carry identical RoHS non-compliance and REACH unaffected status. The 1537-40K is supplied in Tape & Reel packaging, which may require adjustment to procurement and assembly workflows compared to the original component packaging.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537-40K directly replace the Bourns 9310-40 in all applications?

A: Direct substitution is valid for circuits where the operating current does not exceed 271 mA. The 1537-40K has a lower current rating (271 mA) than the original (370 mA). If your circuit operates above 271 mA, alternative components must be evaluated.

Q: What is the difference between ferrite and iron core materials in these inductors?

A: Both the Bourns 9310-40 (ferrite core) and API Delevan 1537-40K (iron core) deliver identical electrical performance at the specified test frequency of 2.5 MHz. Core material differences do not affect the inductance value, Q factor, or self-resonant frequency for this application.

Q: Are there packaging differences between these parts?

A: The Bourns 9310-40 packaging is not specified in the data. The API Delevan 1537-40K is supplied in Tape & Reel (TR) format. Confirm packaging compatibility with your assembly process before procurement.

Q: Do both parts meet the same compliance standards?

A: Both components are RoHS non-compliant and REACH unaffected. They share identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: What is the physical footprint compatibility?

A: Both inductors have identical axial dimensions of 0.156" diameter by 0.375" length (3.96mm x 9.53mm). PCB layout and through-hole spacing remain unchanged during substitution.