Equivalent & Substitute Parts for Bourns 9310-14-RC

Part Overview

The Bourns 9310-14-RC is a 1.2 µH unshielded drum core wirewound inductor rated for 650 mA with a maximum DC resistance of 420 mOhm. This through-hole axial component operates across the temperature range of -55°C to 105°C. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring this inductance value and current rating.

Substiute Parts

9310-14-RC

Bourns Inc.In Stock: 6579310-14-RC Datasheet

Current PartRFQ

1537R-14K

API Delevan Inc.In Stock: 6931537R-14K Datasheet

DirectRFQ

ER1537-14KM

API Delevan Inc.In Stock: 993ER1537-14KM Datasheet

SimilarRFQ

ER1537-14KP

API Delevan Inc.In Stock: 1103ER1537-14KP Datasheet

SimilarRFQ

ER1537-14KR

API Delevan Inc.In Stock: 874ER1537-14KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Bourns 9310-14-RC is based on the following critical parameters that must remain constant or compatible:

• Inductance Value: 1.2 µH (±10% tolerance maintained across all substitutes)
• DC Resistance: 420 mOhm maximum (identical across all options)
• Shielding Configuration: Unshielded (consistent with original design)
• Physical Dimensions: 0.156" Dia x 0.375" L (3.96mm x 9.53mm) for PCB compatibility
• Mounting Type: Through hole axial configuration
• Q Factor & Resonant Frequency: 33 @ 7.9 MHz and 180 MHz self-resonant frequency

The substitute parts from API Delevan Inc. (1537R-14K, ER1537-14KR, ER1537-14KP, ER1537-14KM) meet these electrical and mechanical specifications. The primary differences are core material composition (phenolic vs. ferrite), current rating variations, and packaging formats, which do not affect functional equivalence for applications requiring the specified inductance and resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: API Delevan 1537R-14K

The 1537R-14K is the preferred direct substitute. It maintains all critical electrical parameters (1.2 µH inductance, 420 mOhm DC resistance, 650 mA current rating) and physical dimensions identical to the Bourns 9310-14-RC. This part is active in production, ROHS3 compliant, and available in cut tape packaging. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin compared to the original specification.

Secondary Options: ER1537-14KM, ER1537-14KP, ER1537-14KR

These three API Delevan parts are functionally equivalent for applications operating within the -55°C to 105°C temperature range. All three maintain the required 1.2 µH inductance and 420 mOhm DC resistance. These parts are supplied in tape & reel packaging and are active in production. Note that these variants are RoHS non-compliant, which may restrict their use in applications subject to RoHS regulations.

Current Rating Consideration

The 1537R-14K offers a higher current rating of 730 mA compared to the original 650 mA specification. This provides additional design margin and does not compromise compatibility for applications designed for the original 650 mA rating.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537R-14K be used as a direct replacement for the Bourns 9310-14-RC?

A: Yes. The 1537R-14K maintains identical inductance (1.2 µH), DC resistance (420 mOhm), physical dimensions (0.156" Dia x 0.375" L), and mounting configuration. The higher current rating (730 mA vs. 650 mA) and extended temperature range (-55°C to 125°C) provide additional performance margin.

Q: What is the difference between the 1537R-14K and the ER1537 series parts?

A: The 1537R-14K is supplied in cut tape packaging, while ER1537-14KM, ER1537-14KP, and ER1537-14KR are supplied in tape & reel format. Electrically, all four parts are equivalent. The ER1537 variants are RoHS non-compliant, whereas the 1537R-14K is ROHS3 compliant.

Q: Are there any physical compatibility issues when substituting these parts?

A: No. All substitute parts share identical physical dimensions (0.156" Dia x 0.375" L / 3.96mm x 9.53mm) and axial through-hole mounting configuration. PCB footprints and assembly processes remain unchanged.

Q: Which substitute should be selected for RoHS-regulated applications?

A: The API Delevan 1537R-14K is ROHS3 compliant and is the appropriate choice for applications subject to RoHS requirements. The ER1537-14KM, ER1537-14KP, and ER1537-14KR variants are RoHS non-compliant.

Q: Does the core material change affect circuit performance?

A: The Bourns 9310-14-RC uses a ferrite drum core, while API Delevan substitutes use phenolic cores. Both configurations deliver the specified inductance value, DC resistance, Q factor (33 @ 7.9 MHz), and self-resonant frequency (180 MHz). The core material difference does not affect functional equivalence for the specified electrical parameters.

Q: What inventory status should be considered when selecting a substitute?

A: The 1537R-14K has 648 pieces in stock, ER1537-14KM has 956 pieces, ER1537-14KP has 1005 pieces, and ER1537-14KR has 842 pieces available. All substitutes are in active production with adequate inventory for procurement.