Equivalent & Substitute Parts for Bourns 9310-34-RC

Part Overview

The Bourns 9310-34-RC is an 8.2 µH unshielded drum core wirewound inductor rated for 545 mA with a maximum DC resistance of 600mOhm. This axial through-hole component operates across -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors. The product is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

9310-34-RC

Bourns Inc.In Stock: 9909310-34-RC Datasheet

Current PartRFQ

B78108S1822K000

EPCOS - TDK ElectronicsIn Stock: 844B78108S1822K000 Datasheet

DirectRFQ

1537R-34K

API Delevan Inc.In Stock: 8451537R-34K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9310-34-RC is determined by the following critical parameters:

• Inductance Value: Must be 8.2 µH with ±10% tolerance
• Mounting Type: Must be through-hole axial configuration
• Shielding: Must be unshielded
• Current Rating: Must meet or exceed 545 mA minimum requirement
• DC Resistance: Must not exceed 600mOhm maximum
• Operating Temperature Range: Must support -55°C to 105°C minimum
• Package Compatibility: Physical dimensions must accommodate axial through-hole PCB layouts

Two substitute parts meet these criteria with varying performance characteristics and core material compositions.

Parameter Comparison

Engineering Selection Recommendations

EPCOS B78108S1822K000 is the primary direct substitute. It maintains ferrite drum core construction identical to the original design, exceeds the current rating requirement at 690 mA, and reduces DC resistance to 480mOhm. The extended operating temperature range to 125°C provides additional thermal margin. ROHS3 compliance and active product status ensure long-term availability and supply chain stability. REACH status is affected, requiring verification against specific application requirements.

API Delevan 1537R-34K is a functional alternative with equivalent current rating limitations. The molded iron core construction differs from the original ferrite drum core design. Current rating of 410 mA falls below the original 545 mA specification, restricting use to applications with lower current demands. DC resistance matches the original specification at 600mOhm maximum. ROHS3 compliance and unaffected REACH status provide regulatory alignment. This substitute is suitable only when current requirements do not exceed 410 mA.

Both substitutes maintain ROHS3 compliance and unshielded axial through-hole configuration. Physical dimensions are compatible with standard PCB layouts designed for the original component.

Frequently Asked Questions (FAQ)

Q: Can the EPCOS B78108S1822K000 directly replace the Bourns 9310-34-RC in all applications?

A: Yes, for applications operating at or below 545 mA. The EPCOS part exceeds this current rating at 690 mA and reduces DC resistance, making it suitable for direct substitution. Verify that the extended temperature range to 125°C does not conflict with application thermal design limits.

Q: What is the limitation of the API Delevan 1537R-34K substitute?

A: The API Delevan 1537R-34K has a maximum current rating of 410 mA, which is 135 mA below the original Bourns specification of 545 mA. This substitute is only appropriate for circuits designed to operate at 410 mA or lower.

Q: Are there physical compatibility concerns with these substitutes?

A: Physical dimensions are nearly identical. The EPCOS part measures 0.157" Dia x 0.362" L versus the original 0.156" Dia x 0.375" L. These minor variations are within standard PCB layout tolerances for axial through-hole components.

Q: Do all substitutes meet the same regulatory requirements?

A: All three parts are ROHS3 compliant. The EPCOS B78108S1822K000 has affected REACH status, while the Bourns original and API Delevan part are REACH unaffected. Verify REACH compliance requirements for your specific application and end market.

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

A: The Bourns original and EPCOS substitute use ferrite cores, while the API Delevan uses an iron core. Both materials achieve the specified 8.2 µH inductance with ±10% tolerance. Core material selection affects DC resistance, current handling, and frequency response characteristics as shown in the parameter comparison table.

Q: Can I use the API Delevan part if my circuit requires 545 mA?

A: No. The API Delevan 1537R-34K is rated for 410 mA maximum. Using it in a 545 mA circuit will cause the inductor to saturate, resulting in inductance loss and potential thermal damage.