Bourns 9310-24 Equivalent & Substitute Parts

Part Overview

The Bourns 9310-24 is a 3.3 µH unshielded drum core wirewound inductor rated for 300 mA with a maximum DC resistance of 2Ohm, designed for through-hole axial mounting. This component operates across a temperature range of -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from API Delevan Inc. are available to maintain design continuity and ensure supply chain reliability.

Substiute Parts

9310-24

Bourns Inc.In Stock: 9829310-24 Datasheet

Current PartRFQ

1537-24K

API Delevan Inc.In Stock: 8391537-24K Datasheet

SimilarRFQ

1537R-24K

API Delevan Inc.In Stock: 11481537R-24K Datasheet

SimilarRFQ

ER1537-24KM

API Delevan Inc.In Stock: 896ER1537-24KM Datasheet

SimilarRFQ

ER1537-24KP

API Delevan Inc.In Stock: 1119ER1537-24KP Datasheet

SimilarRFQ

ER1537-24KR

API Delevan Inc.In Stock: 832ER1537-24KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9310-24 is determined by strict alignment of the following electrical and mechanical parameters:

• Inductance value: 3.3 µH
• Inductance tolerance: ±10%
• DC resistance: 2Ohm maximum
• Shielding configuration: Unshielded
• Q factor: 33 @ 7.9MHz
• Self-resonant frequency: 110MHz
• Mounting type: Through hole axial
• Physical dimensions: 0.156" Dia x 0.375" L (3.96mm x 9.53mm)

All substitute parts listed maintain these core electrical specifications. Variations in current rating (300 mA vs. 335 mA), operating temperature range (-55°C ~ 105°C vs. -55°C ~ 125°C), core material (ferrite vs. phenolic), and packaging format (cut tape vs. tape & reel) are secondary considerations that do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

All five API Delevan substitute parts maintain electrical and mechanical compatibility with the Bourns 9310-24 across the specified parameter envelope. Selection among these alternatives is determined by product status, compliance requirements, and packaging needs:

For RoHS3 compliance requirements: API Delevan 1537R-24K is the only substitute certified as ROHS3 Compliant. This part is available in cut tape packaging and supports the extended operating temperature range of -55°C to 125°C.

For active product status with standard RoHS non-compliance: API Delevan 1537-24K and 1537R-24K (cut tape packaging) or ER1537-24KM, ER1537-24KP, and ER1537-24KR (tape & reel packaging) are all active products. The 1537-24K and 1537R-24K variants support 335 mA current rating, providing additional margin above the original 300 mA specification. The ER1537 series maintains the original 300 mA current rating.

For packaging format: Cut tape packaging is available through 1537-24K and 1537R-24K. Tape & reel packaging is available through ER1537-24KM, ER1537-24KP, and ER1537-24KR for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can API Delevan 1537-24K or 1537R-24K be used as direct replacements for the Bourns 9310-24?

A: Yes. Both parts maintain the core electrical specifications: 3.3 µH inductance, ±10% tolerance, 2Ohm maximum DC resistance, 33 Q @ 7.9MHz, and 110MHz self-resonant frequency. The increased current rating (335 mA vs. 300 mA) and extended temperature range (-55°C ~ 125°C vs. -55°C ~ 105°C) provide additional operational margin. Physical dimensions and axial through-hole mounting are identical.

Q: What is the difference between the 1537-24K and 1537R-24K variants?

A: The 1537R-24K is ROHS3 Compliant, while the 1537-24K is RoHS non-compliant. Both maintain identical electrical specifications and are available in cut tape packaging. The 1537R-24K is the preferred choice for applications requiring RoHS3 compliance.

Q: What is the difference between cut tape and tape & reel packaging?

A: Cut tape (CT) packaging is suitable for manual assembly and small-volume applications. Tape & reel (TR) packaging is designed for automated pick-and-place assembly processes and high-volume production. The electrical and mechanical specifications are identical across all packaging formats.

Q: Can ER1537-24KM, ER1537-24KP, or ER1537-24KR be used interchangeably?

A: Yes. All three ER1537 variants maintain identical electrical specifications and are available in tape & reel packaging. They differ only in inventory availability and internal supplier designations. Selection among these three is based on supply chain availability and procurement requirements.

Q: Are there any temperature range limitations when substituting the Bourns 9310-24?

A: The Bourns 9310-24 operates from -55°C to 105°C. API Delevan 1537-24K and 1537R-24K support -55°C to 125°C, providing extended high-temperature capability. ER1537-24KM, ER1537-24KP, and ER1537-24KR match the original -55°C to 105°C range. All substitutes are suitable for applications within the original temperature specification.

Q: What is the current rating difference between the main part and substitute parts?

A: The Bourns 9310-24 is rated for 300 mA. API Delevan 1537-24K and 1537R-24K are rated for 335 mA, providing 11.7% additional current capacity. ER1537-24KM, ER1537-24KP, and ER1537-24KR maintain the original 300 mA rating. All variants are suitable for applications requiring 300 mA or less.