Bourns 5900-220 22µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-220 is a 22µH unshielded drum core wirewound inductor rated for 3.8A continuous current with 30mOhm maximum DC resistance. This through-hole axial component operates across -55°C to 105°C and is designed for general-purpose filtering and energy storage applications in electronic circuits.

The 5900-220 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems.

Key Parameters

Parameter	Value
Inductance	22 µH
Tolerance	±10%
Current Rating	3.8 A
DC Resistance (Max)	30 mOhm
Core Type	Ferrite Drum Core, Unshielded
Mounting Type	Through Hole, Axial
Operating Temperature Range	-55°C to 105°C
Package Dimension	0.453" Dia × 0.900" L (11.51mm × 22.86mm)
Inductance Test Frequency	1 kHz

Substitute Part Grouping Explanation

Substitution eligibility for the 5900-220 is determined by the following critical parameters:

Inductance Value: Must be 22µH ±10%
Current Rating: Must support minimum 3.8A continuous operation
DC Resistance: Must not exceed 30mOhm maximum
Core Material & Shielding: Ferrite, unshielded configuration
Mounting & Package: Through-hole axial mounting with compatible physical dimensions
Operating Temperature: Must cover the -55°C to 105°C range

Two substitute parts meet these criteria:

5900-220-RC (Bourns Inc.): Direct equivalent with identical electrical specifications. Differs only in packaging format (tray vs. bulk) and product status (active vs. obsolete). RoHS3 compliant.

4590-223K (API Delevan Inc.): Similar substitute with matching inductance and core type. Offers improved current rating (5.26A vs. 3.8A) and lower DC resistance (24mOhm vs. 30mOhm). Extended temperature range (-55°C to 125°C). Physical dimensions are within tolerance. RoHS non-compliant.

Parameter Comparison

Parameter	5900-220 (Main)	5900-220-RC (Direct)	4590-223K (Similar)
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.
Inductance	22 µH	22 µH	22 µH
Tolerance	±10%	±10%	±10%
Current Rating (Amps)	3.8 A	3.8 A	5.26 A
DC Resistance (Max)	30 mOhm	30 mOhm	24 mOhm
Core Type	Ferrite Drum Core, Unshielded	Ferrite Drum Core, Unshielded	Ferrite Drum Core, Unshielded
Shielding	Unshielded	Unshielded	Unshielded
Mounting Type	Through Hole, Axial	Through Hole, Axial	Through Hole, Axial
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 125°C
Package Dimension	0.453" Dia × 0.900" L	0.453" Dia × 0.900" L	0.455" Dia × 0.900" L
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	RoHS3 Compliant	Non-compliant

Engineering Selection Recommendations

5900-220-RC is the primary substitute for the obsolete 5900-220. It provides identical electrical performance and physical compatibility while offering active product status and RoHS3 compliance. This part is suitable for new designs and production continuity where regulatory compliance is required.

4590-223K serves as an alternative substitute when enhanced performance margins are acceptable. The higher current rating (5.26A) and lower DC resistance (24mOhm) provide operational headroom beyond the original specification. The extended temperature range (-55°C to 125°C) accommodates more demanding thermal environments. Physical dimensions are compatible within standard PCB layout tolerances. This part is suitable for applications where improved thermal performance or higher current capacity is beneficial, provided RoHS non-compliance is acceptable for the end application.

Frequently Asked Questions (FAQ)

Q: Can 5900-220-RC be used as a direct replacement for 5900-220?

A: Yes. The 5900-220-RC is electrically and mechanically identical to the 5900-220. The only differences are packaging format (tray vs. bulk) and product status (active vs. obsolete). It is the recommended substitute.

Q: What are the advantages of using 4590-223K over 5900-220-RC?

A: The 4590-223K offers higher current rating (5.26A vs. 3.8A), lower DC resistance (24mOhm vs. 30mOhm), and extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C). These characteristics provide additional performance margin in applications with higher current demands or elevated temperature exposure.

Q: Are there any physical compatibility concerns with 4590-223K?

A: Physical dimensions are nearly identical. The 4590-223K measures 0.455" diameter versus 0.453" for the original part—a 0.002" difference within standard PCB layout tolerances. Axial mounting and through-hole configuration are identical.

Q: Does RoHS compliance matter for my application?

A: RoHS compliance is determined by end-use requirements and regional regulations. The 5900-220-RC is RoHS3 compliant, making it suitable for applications subject to EU or equivalent environmental directives. The 4590-223K is non-compliant and should be evaluated against specific regulatory requirements.

Q: What is the inductance tolerance for these parts?

A: All three parts (5900-220, 5900-220-RC, and 4590-223K) carry ±10% inductance tolerance, measured at 1 kHz. This tolerance must be considered in circuit design calculations.

Q: Can I use 4590-223K in a design originally specified for 5900-220?

A: Yes, provided the application can accommodate the parameter differences. The lower DC resistance and higher current rating of 4590-223K are generally beneficial. Verify that RoHS non-compliance does not conflict with end-product requirements.

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