Bourns 5900-180 18µH Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 5900-180 is an 18µH unshielded drum core wirewound inductor rated for 4A continuous current with a maximum DC resistance of 27mOhm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance filtering and energy storage in power conversion circuits.

The 5900-180 carries an obsolete product status. Identifying functionally equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

5900-180

Bourns Inc.In Stock: 10855900-180 Datasheet

Current PartRFQ

4590-183K

API Delevan Inc.In Stock: 7804590-183K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 5900-180 is determined by the following critical parameters:

• Inductance Value: Must match 18µH at 1kHz test frequency
• Inductance Tolerance: Must be ±10% or tighter
• Core Type & Shielding: Must be ferrite drum core, unshielded construction
• Mounting & Package: Must be through-hole axial configuration
• Current Handling: Substitute current rating must equal or exceed 4A continuous
• DC Resistance: Substitute DCR must not exceed 27mOhm maximum
• Temperature Range: Substitute must support minimum -55°C to 105°C operation

The API Delevan 4590-183K meets all substitution criteria. Both components share identical inductance specifications, core material, shielding configuration, and mechanical form factor. The substitute provides superior current handling (5.49A vs 4A) and lower DC resistance (22mOhm vs 27mOhm), with an extended upper operating temperature limit of 125°C.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 4590-183K is a direct functional substitute for the obsolete Bourns 5900-180. Both components are RoHS non-compliant and REACH unaffected, maintaining equivalent regulatory status. The 4590-183K carries active product status, ensuring continued availability and supply chain support.

The substitute component provides measurable performance improvements: 37% higher current rating headroom (5.49A vs 4A) and 19% lower DC resistance (22mOhm vs 27mOhm). Physical dimensions are virtually identical, with axial lead spacing and diameter differences of less than 0.1mm, ensuring direct mechanical compatibility in through-hole PCB layouts.

Selection of the 4590-183K eliminates obsolescence risk while maintaining electrical and mechanical compatibility with the original design specification.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4590-183K be used as a direct replacement for the Bourns 5900-180?

A: Yes. Both components share identical inductance values (18µH), tolerance (±10%), core material (ferrite), shielding (unshielded), and axial through-hole package configuration. Physical dimensions are equivalent within manufacturing tolerances.

Q: What are the key differences between these two inductors?

A: The 4590-183K provides higher current rating (5.49A vs 4A), lower DC resistance (22mOhm vs 27mOhm), and extended upper operating temperature (125°C vs 105°C). These represent performance improvements rather than compatibility limitations.

Q: Are there any PCB layout considerations when substituting the 4590-183K?

A: No. The axial lead spacing and component body dimensions are virtually identical. Existing through-hole footprints require no modification.

Q: What is the regulatory compliance status of the substitute part?

A: The API Delevan 4590-183K maintains the same regulatory classification as the original: RoHS non-compliant and REACH unaffected. No compliance changes result from this substitution.

Q: Why is the Bourns 5900-180 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The API Delevan 4590-183K, with active product status, provides continued availability for equivalent inductance applications.