Equivalent & Substitute Parts for 9310-24-RC

Part Overview

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

Substiute Parts

9310-24-RC

Bourns Inc.In Stock: 9719310-24-RC Datasheet

Current PartRFQ

1537R-24K

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

DirectRFQ

1537-24K

API Delevan Inc.In Stock: 8391537-24K 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 is determined by the following critical parameters:

• Inductance Value: 3.3 µH (exact match required)
• Tolerance: ±10% (exact match required)
• DC Resistance: 2Ω maximum (exact match required)
• Shielding: Unshielded (exact match required)
• Mounting Type: Through Hole Axial (exact match required)
• Physical Dimensions: 0.156" Dia x 0.375" L (exact match required)
• Q Factor & Self Resonant Frequency: 33 @ 7.9MHz and 110MHz (exact match required)

All substitute parts maintain identical electrical and mechanical specifications. Variations in core material (phenolic vs. ferrite), current rating tolerance, operating temperature range, packaging format, and compliance status are secondary considerations that do not affect functional substitution within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Direct Functional Equivalent: The 1537R-24K is the primary substitute. It maintains all critical electrical parameters, offers enhanced current rating (335 mA vs. 300 mA), extended operating temperature range (-55°C to 125°C), and is ROHS3 compliant with active product status.

Alternative Selections: The ER1537-24KM, ER1537-24KP, and ER1537-24KR are functionally equivalent with identical electrical specifications and operating temperature matching the original part (-55°C to 105°C). These are supplied in Tape & Reel packaging format. RoHS compliance status differs from the original specification.

Secondary Option: The 1537-24K provides functional equivalence with extended temperature range but carries RoHS non-compliant status and is supplied in Cut Tape packaging.

For applications requiring ROHS3 compliance and active product support, 1537R-24K is the recommended selection. For applications with specific packaging requirements or legacy compliance profiles, alternative API Delevan parts remain functionally suitable.

Frequently Asked Questions (FAQ)

Q: Can the 1537R-24K directly replace the 9310-24-RC in my circuit?

A: Yes. The 1537R-24K maintains identical inductance (3.3 µH), tolerance (±10%), DC resistance (2Ω max), Q factor (33 @ 7.9MHz), and self-resonant frequency (110MHz). Physical dimensions and through-hole axial mounting are identical. The higher current rating (335 mA vs. 300 mA) and extended temperature range provide additional design margin.

Q: What is the difference between the ER1537 series and the 1537R series?

A: Both series are API Delevan molded inductors with identical electrical specifications. The primary differences are packaging format (Tape & Reel for ER1537 vs. Cut Tape for 1537R) and RoHS compliance status. Electrical performance and physical dimensions are equivalent.

Q: Does the core material change affect circuit performance?

A: The original 9310-24-RC uses ferrite core material, while all API Delevan substitutes use phenolic core material. Both materials achieve the specified inductance value, tolerance, Q factor, and self-resonant frequency. Core material differences do not affect functional substitution within the provided electrical parameters.

Q: Are there temperature rating implications when substituting?

A: The 1537R-24K and 1537-24K offer extended operating range (-55°C to 125°C) compared to the original (-55°C to 105°C). The ER1537 series matches the original temperature range. For applications operating within -55°C to 105°C, all substitutes are suitable. For applications requiring operation above 105°C, only 1537R-24K and 1537-24K are appropriate.

Q: What packaging considerations apply to these substitutes?

A: The 9310-24-RC is supplied as individual components. The 1537R-24K is supplied in Cut Tape format. The ER1537-24KM, ER1537-24KP, and ER1537-24KR are supplied in Tape & Reel format. Packaging format does not affect electrical or mechanical compatibility; it impacts procurement and assembly logistics only.

Q: Is RoHS compliance a substitution factor?

A: The original 9310-24-RC is ROHS3 compliant. The 1537R-24K maintains ROHS3 compliance. The 1537-24K and ER1537 series are RoHS non-compliant. Compliance selection depends on application requirements and regulatory jurisdiction. For RoHS-mandated applications, 1537R-24K is the appropriate selection.