Bourns 9250-153 15µH Shielded Drum Core Inductor – Equivalent & Substitute Parts

Part Overview

The Bourns 9250-153 is a 15µH shielded drum core wirewound inductor rated for 315mA continuous current with 800mOhm maximum DC resistance. Designed for through-hole axial mounting, this component operates across the -55°C to 105°C temperature range with ferrite core construction and ±10% inductance tolerance.

The 9250-153 carries obsolete product status. Identifying functionally equivalent active alternatives ensures design continuity and supply chain reliability for applications requiring this inductance value and current rating.

Key Parameters

Parameter	Value
Inductance	15µH
Current Rating	315mA
DC Resistance (Max)	800mOhm
Shielding	Shielded
Core Material	Ferrite
Tolerance	±10%
Operating Temperature	-55°C to 105°C
Mounting Type	Through Hole Axial
Package Dimensions	0.162" Dia × 0.410" L (4.11mm × 10.41mm)

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters:

Inductance Value: 15µH (exact match required)
Current Rating: 315mA minimum
DC Resistance: 800mOhm maximum
Core Material: Ferrite
Shielding Configuration: Shielded or unshielded based on application requirements
Mounting Type: Through hole axial
Physical Dimensions: 0.162" Dia × 0.410" L (4.11mm × 10.41mm)
Tolerance: ±10%

The substitute parts listed maintain electrical equivalence across inductance, current handling, and resistance specifications. Shielding differences are noted where applicable, as unshielded variants may be suitable for applications without electromagnetic interference constraints.

Parameter Comparison

Parameter	9250-153 (Main)	9250A-153-RC	ER1641-153KM	ER1641-153KP	ER1641-153KR
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Inductance	15µH	15µH	15µH	15µH	15µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating	315mA	315mA	315mA	315mA	315mA
DC Resistance (Max)	800mOhm	800mOhm	800mOhm	800mOhm	800mOhm
Q @ 2.5MHz	45	45	45	45	45
Self Resonant Frequency	49MHz	49MHz	49MHz	49MHz	49MHz
Shielding	Shielded	Shielded	Shielded	Shielded	Unshielded
Core Type	Drum Core, Wirewound	Molded	Molded	Molded	Molded
Operating Temperature	-55°C to 105°C	-55°C to 125°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	Non-compliant	Non-compliant	Non-compliant
Packaging	Bulk	Bulk	Tape & Reel	Tape & Reel	Tape & Reel

Engineering Selection Recommendations

Primary Recommendation: Bourns 9250A-153-RC

The 9250A-153-RC is the direct Bourns successor to the 9250-153. It maintains identical electrical specifications (15µH, 315mA, 800mOhm) 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. This part is the preferred choice for new designs and direct replacement applications.

Secondary Recommendation: API Delevan ER1641-153KM or ER1641-153KP

Both ER1641 variants from API Delevan provide electrical equivalence with active product status. These parts are supplied in tape and reel packaging, suitable for automated assembly environments. The ER1641-153KM and ER1641-153KP are shielded molded inductors matching all critical electrical parameters. Selection between these variants depends on packaging requirements and supply chain availability.

Conditional Recommendation: API Delevan ER1641-153KR

The ER1641-153KR is electrically equivalent but features unshielded construction. This variant is suitable only for applications where electromagnetic shielding is not required. The unshielded design may reduce cost and board space but introduces potential EMI considerations. This part qualifies as a substitute only when shielding is not a functional requirement.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-153-RC directly replace the obsolete 9250-153?

A: Yes. The 9250A-153-RC maintains identical inductance (15µH), current rating (315mA), DC resistance (800mOhm), and physical dimensions. It is the active Bourns equivalent designed for direct substitution.

Q: What is the difference between the Bourns 9250A-153-RC and API Delevan ER1641 variants?

A: All parts share identical electrical specifications. The primary differences are manufacturer, packaging format (bulk vs. tape & reel), and construction type (molded vs. wirewound). The ER1641 series offers active status and alternative sourcing.

Q: Can I use the unshielded ER1641-153KR in place of the shielded 9250-153?

A: The ER1641-153KR is electrically equivalent but lacks shielding. Use this variant only if your application does not require electromagnetic shielding. If the original design specified shielding for EMI control, the shielded variants (9250A-153-RC, ER1641-153KM, or ER1641-153KP) are required.

Q: What packaging options are available for these substitutes?

A: The Bourns 9250A-153-RC is supplied in bulk packaging. The API Delevan ER1641 series (all variants) is supplied in tape & reel format, suitable for pick-and-place assembly. Select based on your manufacturing process requirements.

Q: Are there RoHS compliance differences between these parts?

A: The Bourns 9250A-153-RC is ROHS3 compliant. The API Delevan ER1641 variants are RoHS non-compliant. For applications requiring RoHS compliance, the 9250A-153-RC is the appropriate choice.

Q: Do these substitutes have different temperature ratings?

A: The Bourns 9250A-153-RC operates from -55°C to 125°C, providing a 20°C upper margin over the original 9250-153 (-55°C to 105°C). The API Delevan ER1641 variants operate from -55°C to 105°C, matching the original specification.

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