Equivalent & Substitute Parts for Bourns 9310-12-RC

Part Overview

The Bourns 9310-12-RC is a 1 µH unshielded drum core wirewound inductor rated for 830 mA with a maximum DC resistance of 290 mOhm. This component is designed for through-hole axial mounting applications requiring fixed inductance in the microhenry range. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

9310-12-RC

Bourns Inc.In Stock: 8119310-12-RC Datasheet

Current PartRFQ

1537R-12K

API Delevan Inc.In Stock: 9931537R-12K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bourns 9310-12-RC is determined by the following critical parameters:

• Inductance Value: 1 µH with ±10% tolerance
• Current Rating: Minimum 830 mA
• DC Resistance: Maximum 290 mOhm
• Frequency Characteristics: Q @ 25 MHz = 50, Self Resonant Frequency = 200 MHz
• Physical Form Factor: Through-hole axial mounting with 0.156" diameter and 0.375" length
• Electrical Specifications: Unshielded configuration, operating temperature range compatibility

The API Delevan 1537R-12K meets these substitution criteria with equivalent inductance, tolerance, DC resistance, and frequency characteristics. The substitute maintains the same physical dimensions and mounting configuration while offering improved current rating (880 mA versus 830 mA) and extended operating temperature range (-55°C ~ 125°C versus -55°C ~ 105°C).

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 1537R-12K (1537R series) is a direct functional substitute for the obsolete Bourns 9310-12-RC. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part is currently in active production status, ensuring availability for new designs and legacy system support.

The 1537R-12K provides equivalent electrical performance across all critical parameters: inductance value, tolerance, DC resistance, and frequency characteristics. The increased current rating (880 mA) and extended operating temperature range (-55°C ~ 125°C) of the substitute offer design margin improvements over the original component. Physical form factor compatibility is maintained, allowing direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537R-12K be used as a direct replacement for the Bourns 9310-12-RC?

A: Yes. Both components share identical inductance values (1 µH), tolerance (±10%), DC resistance (290 mOhm max), frequency characteristics (Q @ 25 MHz = 50, SRF = 200 MHz), and physical dimensions (0.156" Dia x 0.375" L). The substitute meets or exceeds all electrical specifications of the original part.

Q: What are the differences between these two inductors?

A: The primary differences are product status, core material construction, and operating temperature range. The Bourns 9310-12-RC uses a drum core ferrite construction and is obsolete. The API Delevan 1537R-12K uses molded phenolic construction, is in active production, and supports an extended operating temperature range of -55°C ~ 125°C compared to -55°C ~ 105°C for the original.

Q: Are there any compatibility concerns with through-hole axial mounting?

A: No. Both components are through-hole axial mounted inductors with identical package dimensions. Board-level substitution requires no layout or footprint modifications.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the Bourns 9310-12-RC and API Delevan 1537R-12K are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the current rating difference?

A: The API Delevan 1537R-12K has a current rating of 880 mA compared to 830 mA for the Bourns 9310-12-RC. This 50 mA increase provides additional design margin and thermal headroom in applications operating near the original component's current limit.