Bourns 5900-820 82µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-820 is an 82µH unshielded drum core wirewound inductor rated for 2.3A continuous current with a maximum DC resistance of 78mOhm. 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.

The 5900-820 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 systems utilizing this inductor.

Substiute Parts

5900-820

Bourns Inc.In Stock: 9765900-820 Datasheet

Current PartRFQ

5900-820-RC

Bourns Inc.In Stock: 11355900-820-RC Datasheet

DirectRFQ

4590-823K

API Delevan Inc.In Stock: 8474590-823K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5900-820 are identified based on the following critical parameters that determine functional equivalence:

• Inductance Value: Must be 82µH ±10%
• Core Type & Shielding: Ferrite core, unshielded construction
• Mounting & Package: Through-hole axial configuration
• Physical Dimensions: Compatible with 0.453" diameter and 0.900" length envelope
• Operating Temperature Range: Minimum -55°C to 105°C coverage
• Inductance Test Frequency: 1 kHz

Two substitute parts meet these criteria:

1. 5900-820-RC (Bourns Inc.) — Direct equivalent with identical electrical specifications and improved product status
2. 4590-823K (API Delevan Inc.) — Similar inductor with enhanced current rating and lower DC resistance, within dimensional and functional tolerance

Parameter Comparison

Engineering Selection Recommendations

5900-820-RC (Recommended Primary Substitute)

The 5900-820-RC is the direct functional equivalent of the obsolete 5900-820. It maintains identical electrical specifications (82µH, 2.3A, 78mOhm DCR) and physical dimensions. The primary advantage is active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment for new designs or production continuity.

4590-823K (Alternative Substitute)

The 4590-823K from API Delevan Inc. provides an alternative solution with enhanced performance characteristics. It delivers higher current rating (3.175A vs. 2.3A) and lower DC resistance (66mOhm vs. 78mOhm), making it suitable for applications requiring improved thermal performance or higher current capacity. Physical dimensions are nearly identical (0.455" vs. 0.453" diameter), and the extended operating temperature range (-55°C to 125°C) provides additional thermal margin. This part is active and available but does not carry RoHS3 compliance.

Selection between these substitutes depends on regulatory requirements (RoHS compliance), current headroom needs, and thermal design constraints of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 5900-820-RC be used as a direct drop-in replacement for the 5900-820?

A: Yes. The 5900-820-RC is electrically and mechanically identical to the 5900-820, with the same inductance (82µH), current rating (2.3A), DC resistance (78mOhm), and physical dimensions (0.453" Dia × 0.900" L). It is a direct substitute suitable for PCB layouts and circuit designs without modification.

Q: What are the key differences between the 5900-820-RC and 4590-823K?

A: Both parts maintain the same 82µH inductance and axial through-hole package. The 4590-823K offers higher current rating (3.175A vs. 2.3A), lower DC resistance (66mOhm vs. 78mOhm), and extended temperature range (-55°C to 125°C vs. -55°C to 105°C). The 5900-820-RC provides ROHS3 compliance, while the 4590-823K does not. Dimensional difference is minimal (0.455" vs. 0.453" diameter).

Q: Are there packaging differences between these substitutes?

A: Yes. The 5900-820 is supplied in standard packaging, the 5900-820-RC is supplied in trays, and the 4590-823K is supplied in bulk. These packaging differences do not affect electrical or mechanical compatibility but may influence procurement and handling procedures.

Q: Which substitute should be selected for new designs?

A: The 5900-820-RC is recommended for new designs due to active product status and ROHS3 compliance. The 4590-823K is suitable if higher current capacity or extended temperature range is required and RoHS compliance is not a constraint.

Q: Is the 4590-823K compatible with existing PCB layouts designed for the 5900-820?

A: The 4590-823K is mechanically compatible with existing through-hole PCB layouts. The diameter difference (0.455" vs. 0.453") is within standard PCB hole tolerance. Electrical compatibility is confirmed by matching inductance, tolerance, and core material specifications.