Bourns 9310-38 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9310-38 is a 12 µH unshielded drum core wirewound inductor rated for 404 mA with a maximum DC resistance of 1.1 Ohm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The 9310-38 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this inductor.

Substiute Parts

9310-38

Bourns Inc.In Stock: 9109310-38 Datasheet

Current PartRFQ

1537-38K

API Delevan Inc.In Stock: 10761537-38K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9310-38 is determined by the following critical parameters:

• Inductance Value: Must match 12 µH with ±10% tolerance
• Current Rating: Substitute must support minimum 404 mA continuous current
• DC Resistance: Maximum 1.1 Ohm to maintain equivalent electrical performance
• Frequency Characteristics: Q factor of 65 @ 2.5 MHz and self-resonant frequency of 42 MHz
• Operating Temperature: Must support -55°C to 105°C range
• Mounting and Package: Through-hole axial configuration with matching physical dimensions (0.156" Dia x 0.375" L)
• Shielding: Unshielded construction

The API Delevan 1537-38K meets these substitution criteria with equivalent electrical specifications and compatible physical form factor, despite differences in core material and current rating classification.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1537-38K (1537-38K) is a qualified substitute for the obsolete Bourns 9310-38 based on the following engineering criteria:

Electrical Equivalence: Both components deliver identical inductance (12 µH ±10%), DC resistance (1.1 Ohm max), and frequency response characteristics (Q = 65 @ 2.5 MHz, fsr = 42 MHz). Operating temperature ranges are identical across -55°C to 105°C.

Physical Compatibility: Axial through-hole mounting with matching dimensions (0.156" Dia x 0.375" L) ensures direct board-level substitution without layout modifications.

Current Rating Consideration: The 1537-38K is rated for 305 mA continuous current, which is lower than the 9310-38 rating of 404 mA. Selection of this substitute is appropriate for applications where the actual operating current does not exceed 305 mA. For applications requiring the full 404 mA rating, alternative parts must be evaluated.

Product Status and Supply: The 1537-38K carries active product status with confirmed inventory availability (1023 Pcs), providing supply chain continuity for the obsolete 9310-38.

Compliance: Both components are RoHS non-compliant and REACH unaffected, maintaining equivalent regulatory classification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537-38K directly replace the Bourns 9310-38 in all applications?

A: Direct substitution is valid for applications where the operating current does not exceed 305 mA. The 1537-38K has a lower current rating (305 mA) compared to the 9310-38 (404 mA). If your circuit requires the full 404 mA rating, the 1537-38K is not suitable without circuit redesign or thermal analysis.

Q: What are the key electrical parameters that make these parts equivalent?

A: Inductance value (12 µH ±10%), DC resistance (1.1 Ohm max), Q factor (65 @ 2.5 MHz), and self-resonant frequency (42 MHz) are identical. Operating temperature range (-55°C to 105°C) is also matched.

Q: Are there physical differences between these inductors?

A: Both components share identical axial through-hole packaging with dimensions of 0.156" Dia x 0.375" L (3.96mm x 9.53mm). No PCB layout modifications are required for mechanical substitution.

Q: Why does the 1537-38K have a lower current rating if the DC resistance is the same?

A: Current rating differences reflect design methodology and core material differences (ferrite vs. iron). The 1537-38K uses molded construction with an iron core, while the 9310-38 uses drum core wirewound with ferrite. These design variations result in different thermal and saturation characteristics at higher current levels.

Q: What is the packaging difference between these parts?

A: The Bourns 9310-38 is supplied in standard through-hole format. The API Delevan 1537-38K is supplied in Tape & Reel (TR) packaging, which is standard for active production components. Both are compatible with through-hole assembly processes.

Q: Are there compliance or regulatory differences?

A: Both components share identical RoHS and REACH status (RoHS non-compliant, REACH unaffected). No compliance advantage exists with either part.