Bourns 9250-563 Equivalent & Substitute Parts

Part Overview

The Bourns 9250-563 is a 56 µH shielded drum core wirewound inductor rated for 190 mA with a maximum DC resistance of 2.23 Ohm. This through-hole axial component operates across -55°C to 105°C and features ferrite core construction with ±10% inductance tolerance. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Inductance	56 µH
Current Rating	190 mA
DC Resistance (Max)	2.23 Ohm
Tolerance	±10%
Shielding	Shielded
Core Material	Ferrite
Mounting Type	Through Hole
Package	Axial
Size	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Operating Temperature	-55°C to 105°C
Q @ 2.5 MHz	50
Self Resonant Frequency	25 MHz

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: inductance value (56 µH), current rating (190 mA), DC resistance (2.23 Ohm max), tolerance (±10%), core material (ferrite), mounting type (through hole), package style (axial), and physical dimensions (0.162" Dia x 0.410" L). Shielding configuration and product status are secondary considerations that may affect application suitability.

The substitute parts are grouped into two categories:

Direct Manufacturer Substitute: Parts from the same manufacturer (Bourns Inc.) with identical electrical specifications and active product status.

Similar Manufacturer Substitutes: Parts from alternative manufacturers (API Delevan Inc.) meeting all critical electrical and mechanical parameters, available in different packaging configurations and shielding options.

Parameter Comparison

Parameter	9250-563	9250A-563-RC	ER1641-563KM	ER1641-563KP	ER1641-563KR
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Inductance	56 µH	56 µH	56 µH	56 µH	56 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating	190 mA	190 mA	190 mA	190 mA	190 mA
DC Resistance (Max)	2.23 Ohm	2.23 Ohm	2.23 Ohm	2.23 Ohm	2.23 Ohm
Q @ 2.5 MHz	50	50	50	50	50
Self Resonant Frequency	25 MHz	25 MHz	25 MHz	25 MHz	25 MHz
Shielding	Shielded	Shielded	Shielded	Shielded	Unshielded
Core Type	Drum Core, Wirewound	Molded	Molded	Molded	Molded
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 (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	-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	RoHS non-compliant	RoHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
Packaging	Bulk	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

9250A-563-RC (Bourns Inc.): This direct substitute from the original manufacturer is the primary replacement option. It 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. Molded construction replaces the original drum core design while preserving shielding and performance characteristics.

ER1641-563KM and ER1641-563KP (API Delevan Inc.): These alternatives meet all critical electrical and mechanical parameters with active product status. Both feature molded construction and shielded configuration. Available in Tape & Reel packaging for automated assembly processes. Operating temperature range matches the original specification (-55°C to 105°C). RoHS non-compliance status requires evaluation against application requirements.

ER1641-563KR (API Delevan Inc.): This variant differs in shielding configuration, providing unshielded construction while maintaining all other electrical specifications. Suitable only for applications where electromagnetic shielding is not required. Military specification compliance (MIL-PRF-39010/03) may be relevant for defense or aerospace applications. Tape & Reel packaging supports automated assembly.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-563-RC directly replace the obsolete 9250-563?

A: Yes. The 9250A-563-RC maintains identical inductance (56 µH), current rating (190 mA), DC resistance (2.23 Ohm max), tolerance (±10%), shielding, and physical dimensions. The extended operating temperature range (-55°C to 125°C versus -55°C to 105°C) and RoHS3 compliance provide additional advantages for new designs.

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

A: Both manufacturers provide parts meeting identical electrical specifications and physical dimensions. The Bourns 9250A-563-RC offers direct manufacturer continuity and RoHS3 compliance. API Delevan ER1641 series parts are available in Tape & Reel packaging for automated assembly and include military specification options (ER1641-563KR).

Q: Can ER1641-563KR be used as a substitute despite being unshielded?

A: ER1641-563KR is electrically equivalent but differs in shielding configuration. Substitution is valid only for applications where electromagnetic shielding is not a functional requirement. Applications requiring shielded inductors must use 9250A-563-RC, ER1641-563KM, or ER1641-563KP.

Q: What packaging options are available?

A: The 9250A-563-RC is supplied in Bulk packaging. All API Delevan ER1641 variants (ER1641-563KM, ER1641-563KP, ER1641-563KR) are supplied in Tape & Reel (TR) packaging for automated pick-and-place assembly.

Q: Are there RoHS compliance considerations?

A: The original 9250-563 and API Delevan ER1641 series are RoHS non-compliant. The 9250A-563-RC is RoHS3 compliant, making it the preferred choice for applications subject to RoHS regulations.

Q: Do all substitutes have identical thermal ratings?

A: Operating temperature ranges vary slightly. The 9250A-563-RC extends to 125°C, while the original and API Delevan parts are rated to 105°C. All parts operate at the minimum -55°C specification.

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