Bourns 9250-103 10µH Shielded Drum Core Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9250-103 is a 10 µH shielded drum core wirewound inductor rated for 220 mA with a maximum DC resistance of 1.62Ω. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring controlled inductance with electromagnetic shielding. The 9250-103 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

9250-103

Bourns Inc.In Stock: 12939250-103 Datasheet

Current PartRFQ

9250A-103-RC

Bourns Inc.In Stock: 18639250A-103-RC Datasheet

DirectRFQ

ER1641-103KM

API Delevan Inc.In Stock: 881ER1641-103KM Datasheet

SimilarRFQ

ER1641-103KP

API Delevan Inc.In Stock: 764ER1641-103KP Datasheet

SimilarRFQ

ER1641-103KR

API Delevan Inc.In Stock: 1024ER1641-103KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 9250-103 is determined by matching the following critical electrical and mechanical parameters: inductance value (10 µH), tolerance (±10%), current rating (220 mA), DC resistance (1.62Ω max), shielding requirement (shielded), Q factor (50 @ 7.9 MHz), self-resonant frequency (46 MHz), and physical dimensions (0.162" Dia × 0.410" L). All substitute parts must maintain through-hole axial mounting and operate within the specified temperature range.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): The Bourns 9250A-103-RC maintains identical electrical specifications and physical dimensions while offering improved product status (active vs. obsolete) and enhanced RoHS3 compliance.

Cross-Manufacturer Alternatives: The API Delevan ER1641 series (ER1641-103KM, ER1641-103KP, ER1641-103KR) provides electrical equivalence with core material variation (iron vs. ferrite) and packaging differences. The ER1641-103KR variant differs in shielding configuration (unshielded).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Bourns 9250A-103-RC

The 9250A-103-RC is the preferred direct substitute for the obsolete 9250-103. This part maintains identical electrical specifications and physical dimensions while offering active product status and ROHS3 compliance. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin. Packaging is available in bulk format.

Secondary Alternatives: API Delevan ER1641 Series

The ER1641-103KM and ER1641-103KP are functionally equivalent cross-manufacturer alternatives with identical electrical parameters and physical dimensions. These parts feature molded construction with iron core material and are supplied in tape & reel packaging. Both maintain shielding and meet the specified electrical requirements. Product status is active.

Conditional Use: ER1641-103KR

The ER1641-103KR is electrically equivalent but features unshielded construction. This variant is suitable only for applications where electromagnetic shielding is not required. This part is qualified to MIL-PRF-39010/02 military specifications and is supplied in tape & reel packaging.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-103-RC directly replace the 9250-103 in existing designs?

A: Yes. The 9250A-103-RC maintains identical inductance (10 µH), tolerance (±10%), current rating (220 mA), DC resistance (1.62Ω max), Q factor (50 @ 7.9 MHz), self-resonant frequency (46 MHz), and physical dimensions (0.162" Dia × 0.410" L). The extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C) is backward compatible. Pin-for-pin and footprint compatibility is maintained.

Q: What is the difference between the Bourns and API Delevan substitutes?

A: The primary differences are manufacturer, core material (ferrite vs. iron), and packaging format. Bourns 9250A-103-RC uses ferrite core and is supplied in bulk. API Delevan ER1641 series uses iron core and is supplied in tape & reel. All maintain identical electrical specifications and physical dimensions.

Q: When should the ER1641-103KR (unshielded variant) be used?

A: The ER1641-103KR is suitable only for applications where electromagnetic shielding is not a design requirement. The main 9250-103 and all other substitutes are shielded. Unshielded construction may introduce electromagnetic interference in sensitive circuits.

Q: Are there packaging considerations when switching between substitutes?

A: Yes. The 9250A-103-RC is supplied in bulk packaging, while ER1641 series parts are supplied in tape & reel format. Tape & reel packaging is standard for automated assembly processes. Bulk packaging is suitable for manual assembly or lower-volume applications.

Q: What compliance differences exist between the substitutes?

A: The 9250A-103-RC is ROHS3 compliant, while the original 9250-103 and all ER1641 variants are RoHS non-compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: Are the ER1641 parts qualified to any military standards?

A: The ER1641-103KR is qualified to MIL-PRF-39010/02 military specifications. The ER1641-103KM and ER1641-103KP do not reference military qualification in the provided specifications.