Bourns 9250-151 150nH Shielded Drum Core Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9250-151 is a 150nH shielded drum core wirewound inductor rated for 1.47A with a maximum DC resistance of 37mOhm. This through-hole axial component operates across -55°C to 105°C and features a ferrite core with ±10% inductance tolerance. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain the same electrical specifications while offering improved availability and compliance status.

Key Parameters

Parameter	Value
Inductance	150 nH
Inductance Tolerance	±10%
Current Rating	1.47 A
DC Resistance (Max)	37 mOhm
Shielding	Shielded
Q Factor @ 25MHz	51
Self Resonant Frequency	250 MHz
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package	Axial
Size	0.162" Dia x 0.410" L (4.11mm x 10.41mm)

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: inductance value (150nH), inductance tolerance (±10%), current rating (1.47A), DC resistance (37mOhm max), shielding (shielded), self-resonant frequency (250MHz), mounting type (through hole), and package format (axial). All substitute parts listed maintain these specifications within the allowed tolerances.

The 9250-151 qualifies two categories of substitutes:

Direct Manufacturer Substitute: The Bourns 9250A-151-RC represents the active production equivalent from the same manufacturer, differing only in construction type (molded vs. drum core) and extended operating temperature range (to 125°C).

Similar Manufacturer Substitutes: The API Delevan ER1641 series (ER1641-151KP, ER1641-151KM, ER1641-151KR) provides functional equivalence with identical electrical performance. These parts differ in core material (phenolic vs. ferrite) and packaging format (tape & reel vs. bulk), but maintain all critical electrical parameters.

Parameter Comparison

Parameter	9250-151	9250A-151-RC	ER1641-151KP	ER1641-151KM	ER1641-151KR
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Series	9250	9250A	ER1641	ER1641	ER1641
Inductance	150 nH	150 nH	150 nH	150 nH	150 nH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating	1.47 A	1.47 A	1.47 A	1.47 A	1.47 A
DC Resistance (Max)	37 mOhm	37 mOhm	37 mOhm	37 mOhm	37 mOhm
Q @ 25MHz	51	51	50	50	50
Self Resonant Frequency	250 MHz	250 MHz	250 MHz	250 MHz	250 MHz
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
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package	Axial	Axial	Axial	Axial	Axial
Size	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
Packaging Format	Bulk	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

For RoHS3 Compliant Applications: The Bourns 9250A-151-RC is the primary substitute, offering ROHS3 compliance and active product status. This part maintains identical electrical specifications and physical dimensions while extending the operating temperature range to 125°C. Bulk packaging is suitable for standard procurement workflows.

For Tape & Reel Packaging Requirements: The API Delevan ER1641 series (ER1641-151KP, ER1641-151KM, ER1641-151KR) provides tape & reel packaging for automated assembly processes. All three variants maintain electrical equivalence with the 9250-151. These parts are active products with consistent inventory availability.

For Legacy Non-Compliant Applications: When RoHS compliance is not required, the API Delevan ER1641 series remains functionally equivalent to the 9250-151 across all critical electrical parameters. Core material differences (phenolic vs. ferrite) do not affect the specified electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-151-RC directly replace the 9250-151 in existing designs?

A: Yes. The 9250A-151-RC maintains all critical electrical specifications: 150nH inductance, 1.47A current rating, 37mOhm DC resistance, and identical physical dimensions. The extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C) provides additional margin. The primary difference is construction type (molded vs. drum core) and RoHS3 compliance.

Q: What is the difference between the Bourns 9250A-151-RC and the API Delevan ER1641 series?

A: Both maintain identical electrical specifications. The Bourns 9250A-151-RC is supplied in bulk packaging and offers RoHS3 compliance. The API Delevan ER1641 series is supplied in tape & reel format and uses phenolic core material instead of ferrite. Selection depends on packaging requirements and compliance needs.

Q: Are the three API Delevan ER1641 variants (KP, KM, KR) electrically interchangeable?

A: Yes. The ER1641-151KP, ER1641-151KM, and ER1641-151KR are electrically identical, differing only in packaging designation. All three maintain the same 150nH inductance, 1.47A rating, and 37mOhm DC resistance.

Q: Does the phenolic core in the ER1641 series affect performance compared to the ferrite core in the 9250-151?

A: No. Both core materials deliver the specified electrical performance: 150nH inductance, Q factor of 50-51 at 25MHz, and 250MHz self-resonant frequency. Core material selection does not impact the parameters that determine substitution eligibility.

Q: What packaging considerations apply when switching from bulk to tape & reel format?

A: Tape & reel packaging (ER1641 series) is optimized for automated assembly processes, while bulk packaging (9250A-151-RC) is suitable for manual or semi-automated assembly. Both formats contain the same component; selection depends on production workflow requirements.

Q: Is the 9250-151 still available for new designs?

A: The 9250-151 is classified as obsolete. For new designs, the Bourns 9250A-151-RC or API Delevan ER1641 series are recommended as active production alternatives with equivalent electrical performance.

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