Equivalent & Substitute Parts for Bourns 9250-104-RC

Part Overview

The Bourns 9250-104-RC is a 100 µH shielded drum core wirewound inductor rated for 160 mA with a maximum DC resistance of 3.12Ω. This through-hole axial component operates across -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Substiute Parts

9250-104-RC

Bourns Inc.In Stock: 6519250-104-RC Datasheet

Current PartRFQ

9250A-104-RC

Bourns Inc.In Stock: 21819250A-104-RC Datasheet

DirectRFQ

1641R-104K

API Delevan Inc.In Stock: 11341641R-104K Datasheet

SimilarRFQ

ER1641-104KM

API Delevan Inc.In Stock: 828ER1641-104KM Datasheet

SimilarRFQ

ER1641-104KP

API Delevan Inc.In Stock: 944ER1641-104KP Datasheet

SimilarRFQ

ER1641-104KR

API Delevan Inc.In Stock: 999ER1641-104KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Inductance Value: Must be 100 µH
• Tolerance: Must be ±10%
• Current Rating: Minimum 160 mA
• DC Resistance: Maximum 3.12Ω
• Shielding: Must be shielded (electromagnetic containment requirement)
• Core Material: Ferrite
• Mounting Type: Through hole
• Package Style: Axial
• Physical Dimensions: 0.162" Dia × 0.410" L (4.11mm × 10.41mm)
• Operating Temperature: Minimum -55°C to 105°C

Parts meeting all these criteria are classified as direct substitutes. Parts with variations in non-critical parameters (such as packaging format or RoHS compliance status) are classified as similar substitutes with noted restrictions.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Bourns 9250A-104-RC

The 9250A-104-RC is the recommended direct replacement. It maintains identical electrical specifications (100 µH, 160 mA, 3.12Ω DCR) and physical dimensions while offering active product status. The transition from drum core to molded construction does not affect electrical performance. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin. ROHS3 compliance aligns with modern regulatory requirements.

Secondary Substitutes: API Delevan 1641R-104K, ER1641-104KM, ER1641-104KP

These API Delevan parts meet all critical electrical and mechanical parameters. The 1641R-104K offers slightly higher current rating (164 mA) with identical DC resistance. The ER1641 series parts (ER1641-104KM and ER1641-104KP) are available in tape & reel packaging for automated assembly. All three maintain shielding, ferrite core material, and identical physical dimensions. However, these parts carry RoHS non-compliant status, which may restrict use in applications subject to RoHS regulations.

Not Recommended: API Delevan ER1641-104KR

The ER1641-104KR is unshielded, which violates the shielding requirement of the original specification. Electromagnetic containment properties differ fundamentally from the shielded design. This part is unsuitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 9250A-104-RC replace the obsolete 9250-104-RC in existing designs?

A: Yes. The 9250A-104-RC is electrically and mechanically equivalent. Both parts share identical inductance (100 µH), current rating (160 mA), DC resistance (3.12Ω), shielding, and physical dimensions (0.162" Dia × 0.410" L). The change from drum core to molded construction does not affect circuit performance.

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

A: Both manufacturers provide parts meeting the core electrical specifications. Bourns 9250A-104-RC is ROHS3 compliant and active. API Delevan parts (1641R-104K, ER1641-104KM, ER1641-104KP) are active but RoHS non-compliant. Selection depends on regulatory requirements and packaging preferences (bulk versus tape & reel).

Q: Why is the ER1641-104KR not suitable as a substitute?

A: The ER1641-104KR is unshielded, whereas the original 9250-104-RC and all recommended substitutes are shielded. Shielding provides electromagnetic containment critical to circuit performance. Unshielded inductors exhibit different coupling characteristics and may introduce noise into sensitive circuits.

Q: Does the extended temperature range of the 9250A-104-RC affect compatibility?

A: No. The 9250A-104-RC operates from -55°C to 125°C, compared to the original -55°C to 105°C. The extended upper limit provides additional thermal margin and does not restrict use in applications requiring the original temperature range.

Q: What packaging options are available for these substitutes?

A: The Bourns 9250A-104-RC is supplied in bulk packaging. API Delevan 1641R-104K is bulk. API Delevan ER1641-104KM and ER1641-104KP are supplied in tape & reel format for automated pick-and-place assembly. Selection depends on production volume and assembly process requirements.

Q: Are there compliance differences between substitutes?

A: Yes. Bourns 9250A-104-RC is ROHS3 compliant. API Delevan 1641R-104K is ROHS3 compliant. API Delevan ER1641-104KM, ER1641-104KP, and ER1641-104KR are RoHS non-compliant. Applications subject to RoHS regulations must use ROHS3 compliant parts.