Bourns 9250-224 220µH Shielded Drum Core Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9250-224 is a 220 µH shielded drum core wirewound inductor rated for 125 mA with a maximum DC resistance of 5 Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Active alternatives from both Bourns and API Delevan maintain identical electrical specifications while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value
Inductance	220 µH
Tolerance	±10%
Current Rating	125 mA
Current - Saturation (Isat)	80 mA
DC Resistance (DCR)	5 Ohm Max
Shielding	Shielded
Q @ Frequency	55 @ 790 kHz
Frequency - Self Resonant	7.5 MHz
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Material - Core	Ferrite

Substitute Part Grouping Explanation

Substitution of the Bourns 9250-224 is determined by strict equivalence across the following critical parameters:

Inductance Value: 220 µH with ±10% tolerance
Current Rating: 125 mA continuous
DC Resistance: 5 Ohm maximum
Shielding: Shielded configuration
Frequency Characteristics: Q @ 790 kHz = 55; Self-resonant frequency = 7.5 MHz
Mounting and Package: Through-hole axial configuration with 0.162" diameter × 0.410" length
Core Material: Ferrite

All substitute parts listed maintain these electrical and mechanical specifications. Differences in product status, packaging format, and compliance certifications do not affect functional equivalence in circuit applications.

Parameter Comparison

Parameter	9250-224 (Bourns)	9250A-224-RC (Bourns)	ER1641-224KR (API Delevan)	ER1641-224KM (API Delevan)	ER1641-224KP (API Delevan)
Inductance	220 µH	220 µH	220 µH	220 µH	220 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating (mA)	125	125	125	125	125
DC Resistance (Ohm Max)	5	5	5	5	5
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Q @ 790 kHz	55	55	55	55	55
Self-Resonant Frequency (MHz)	7.5	7.5	7.5	7.5	7.5
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial	Axial
Size / Dimension	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
Packaging Format	Bulk	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

Primary Recommendation: Bourns 9250A-224-RC

The 9250A-224-RC is the direct successor to the obsolete 9250-224. It maintains all electrical specifications while offering active product status and ROHS3 compliance. The extended operating temperature range (-55°C ~ 125°C versus -55°C ~ 105°C) provides additional thermal margin. Bulk packaging is suitable for standard procurement workflows.

Alternative Options: API Delevan ER1641 Series (ER1641-224KR, ER1641-224KM, ER1641-224KP)

The ER1641 series inductors from API Delevan provide functionally equivalent performance with identical electrical parameters. These parts are supplied in Tape & Reel format, appropriate for automated assembly processes. All three variants (KR, KM, KP) are electrically interchangeable. Selection among these variants depends on packaging and supply chain requirements rather than electrical performance.

Compliance Consideration

For applications requiring RoHS3 compliance, the Bourns 9250A-224-RC is the only option among the listed substitutes. API Delevan ER1641 series parts are RoHS non-compliant and should be selected only when compliance requirements do not apply.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan ER1641-224KR, ER1641-224KM, and ER1641-224KP be used interchangeably?

A: Yes. All three variants maintain identical electrical specifications (220 µH, 125 mA, 5 Ohm DCR, 55 Q @ 790 kHz, 7.5 MHz self-resonant frequency) and physical dimensions. Differences are limited to packaging format designation and internal supplier specifications that do not affect circuit performance.

Q: What is the difference between the Bourns 9250-224 and 9250A-224-RC?

A: The primary differences are product status (obsolete versus active), construction type (drum core versus molded), operating temperature range (-55°C ~ 105°C versus -55°C ~ 125°C), and RoHS compliance (non-compliant versus ROHS3 compliant). All electrical and mechanical parameters are identical.

Q: Are Tape & Reel packaged parts (ER1641 series) compatible with through-hole assembly processes?

A: Yes. Tape & Reel packaging is a supply format that does not affect component functionality. The ER1641 series parts are identical through-hole axial inductors and are compatible with standard PCB assembly equipment and manual insertion processes.

Q: Can the 9250-224 be replaced in legacy designs without circuit modification?

A: Yes. All substitute parts maintain the same inductance value (220 µH ±10%), current rating (125 mA), DC resistance (5 Ohm max), and frequency characteristics. Direct substitution is possible without design changes.

Q: Which substitute part should be selected for new production designs?

A: The Bourns 9250A-224-RC is recommended for new designs due to active product status and ROHS3 compliance. For applications where RoHS compliance is not required and Tape & Reel packaging is preferred, the API Delevan ER1641 series provides equivalent performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message