Bourns 9250-154-RC 150µH Shielded Drum Core Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9250-154-RC is a 150 µH shielded drum core wirewound inductor rated for 140 mA continuous current with a maximum DC resistance of 4.1 Ohm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring ferrite core shielding and low-frequency filtering.

The 9250-154-RC has reached obsolete product status. Direct substitutes and equivalent alternatives from both Bourns and API Delevan are available to maintain design continuity and ensure supply chain reliability.

Key Parameters

Parameter	Value
Inductance	150 µH
Inductance Tolerance	±10%
Current Rating	140 mA
Current - Saturation (Isat)	90 mA
DC Resistance (DCR)	4.1 Ohm Max
Q @ Frequency	55 @ 790 kHz
Frequency - Self Resonant	8.5 MHz
Core Material	Ferrite
Shielding	Shielded
Package / Case	Axial
Mounting Type	Through Hole
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Operating Temperature Range	-55°C ~ 105°C

Substitute Part Grouping Explanation

Substitution eligibility for the 9250-154-RC is determined by strict equivalence across the following electrical and mechanical parameters:

Inductance value: 150 µH with ±10% tolerance
Current rating: 140 mA minimum
DC resistance: 4.1 Ohm maximum
Core material: Ferrite
Shielding: Shielded construction
Package type: Axial through-hole
Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Q factor: 55 @ 790 kHz
Self-resonant frequency: 8.5 MHz
Inductance test frequency: 790 kHz

Substitute parts are grouped into two categories: direct manufacturer alternatives from Bourns (9250A series) and equivalent alternatives from API Delevan (ER1641 series). All substitutes maintain identical electrical specifications and physical form factors, ensuring mechanical and electrical interchangeability within the specified parameter tolerances.

Parameter Comparison

Parameter	9250-154-RC (Main)	9250A-154-RC	ER1641-154KM	ER1641-154KP	ER1641-154KR
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Inductance	150 µH	150 µH	150 µH	150 µH	150 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating (Amps)	140 mA	140 mA	140 mA	140 mA	140 mA
DC Resistance (DCR)	4.1 Ohm Max	4.1 Ohm Max	4.1 Ohm Max	4.1 Ohm Max	4.1 Ohm Max
Q @ Frequency	55 @ 790 kHz	55 @ 790 kHz	55 @ 790 kHz	55 @ 790 kHz	55 @ 790 kHz
Frequency - Self Resonant	8.5 MHz	8.5 MHz	8.5 MHz	8.5 MHz	8.5 MHz
Core Material	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Type	Drum Core, Wirewound	Molded	Molded	Molded	Molded
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Package / Case	Axial	Axial	Axial	Axial	Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
Packaging	-	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

The 9250A-154-RC from Bourns is the primary direct substitute for the obsolete 9250-154-RC. Both components are ROHS3 compliant and manufactured by the same supplier. The 9250A-154-RC features an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C) and is currently in active production status with higher inventory availability.

The ER1641 series inductors from API Delevan (ER1641-154KM, ER1641-154KP, ER1641-154KR) provide electrical and mechanical equivalence but carry RoHS non-compliant status. These alternatives are suitable for applications where RoHS compliance is not a design requirement. All three ER1641 variants are available in tape and reel packaging, which may be advantageous for automated assembly processes.

Selection between Bourns and API Delevan alternatives should be based on regulatory compliance requirements, packaging format needs, and supply chain preferences. All listed substitutes maintain identical electrical performance and physical interchangeability.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-154-RC directly replace the obsolete 9250-154-RC in existing designs?

A: Yes. The 9250A-154-RC maintains identical electrical specifications (150 µH, 140 mA, 4.1 Ohm DCR) and physical dimensions (0.162" Dia x 0.410" L). The primary difference is the construction type (molded versus drum core wirewound) and extended temperature range. Both are ROHS3 compliant.

Q: What is the difference between the Bourns 9250A-154-RC and the API Delevan ER1641 series?

A: Electrical and mechanical specifications are identical across all parts. The key differences are manufacturer (Bourns versus API Delevan), RoHS compliance status (9250A-154-RC is ROHS3 compliant; ER1641 series is non-compliant), and packaging format (9250A-154-RC available in bulk; ER1641 series in tape and reel).

Q: Are there differences between ER1641-154KM, ER1641-154KP, and ER1641-154KR?

A: All three ER1641 variants share identical electrical specifications and physical dimensions. The suffix designations (KM, KP, KR) indicate different packaging or lead configurations within the API Delevan product line. Electrical interchangeability is confirmed across all three variants.

Q: What packaging formats are available for these substitutes?

A: The Bourns 9250A-154-RC is supplied in bulk packaging. The API Delevan ER1641 series (all three variants) is supplied in tape and reel format, suitable for automated pick-and-place assembly.

Q: Does the extended temperature range of the 9250A-154-RC affect compatibility?

A: No. The 9250A-154-RC operating range of -55°C to 125°C encompasses the original -55°C to 105°C specification. This extended range provides additional design margin and does not impact interchangeability in applications designed for the original temperature range.

Q: Are there any compliance considerations when selecting between these substitutes?

A: Yes. The Bourns 9250A-154-RC is ROHS3 compliant. The API Delevan ER1641 series is RoHS non-compliant. Design requirements for RoHS compliance should determine whether the Bourns or API Delevan alternative is appropriate.

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