Bourns 5900-8R2 Equivalent & Substitute Parts

Part Overview

The Bourns 5900-8R2 is an 8.2 µH unshielded drum core wirewound inductor rated for 5 A continuous current with a maximum DC resistance of 17 mOhm. This through-hole axial component operates across a temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The 5900-8R2 carries an obsolete product status. Identifying equivalent 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

5900-8R2

Bourns Inc.In Stock: 10705900-8R2 Datasheet

Current PartRFQ

4590-822K

API Delevan Inc.In Stock: 10354590-822K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 5900-8R2 is determined by the following critical parameters:

• Inductance Value: Must match 8.2 µH within the specified ±10% tolerance band
• Core Type & Shielding: Must be ferrite drum core, unshielded construction
• Mounting & Package: Must be through-hole axial configuration
• Current Handling: Substitute must support the application's current requirements without exceeding saturation limits
• DC Resistance: Lower or equivalent DCR values are acceptable; higher values may impact circuit performance
• Temperature Range: Operating temperature capability must encompass the application's thermal environment
• Physical Footprint: Dimensions must be compatible with PCB layout constraints

The API Delevan 4590-822K meets these substitution criteria, offering equivalent inductance and core characteristics with enhanced electrical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 4590-822K is a direct functional substitute for the obsolete Bourns 5900-8R2. Both components share identical inductance values, core materials, and mounting configurations. The 4590-822K maintains active product status, ensuring ongoing availability and supply chain support.

The substitute offers improved electrical characteristics: lower DC resistance (13 mOhm vs. 17 mOhm) reduces resistive losses, and higher current rating (7.15 A vs. 5 A) provides additional design margin. The extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C) accommodates broader thermal environments.

Physical dimensions are virtually identical, with negligible differences (0.002" diameter variance) that do not impact PCB layout compatibility. Both components carry identical RoHS and REACH compliance status.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4590-822K directly replace the Bourns 5900-8R2 in existing designs?

A: Yes. Both inductors share the same 8.2 µH inductance value, ±10% tolerance, ferrite drum core construction, unshielded design, and through-hole axial package. Physical dimensions are compatible with standard PCB layouts. No circuit modifications are required.

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

A: The 4590-822K provides superior electrical performance: 4 mOhm lower DC resistance, 2.15 A higher current rating, and 20°C extended upper temperature limit. The 5900-8R2 offers higher saturation current (10 A vs. 5.7 A). Selection depends on application current requirements and thermal constraints.

Q: Are there any compliance or certification differences?

A: Both components carry identical RoHS non-compliant and REACH unaffected status. Compliance requirements should be evaluated against application specifications.

Q: How do physical dimensions affect substitution?

A: Dimensions are nearly identical (0.453" vs. 0.455" diameter; both 0.900" length). This 0.002" diameter difference is negligible for standard through-hole PCB layouts and does not require design modifications.

Q: Which inductor should be selected for new designs?

A: The API Delevan 4590-822K is recommended for new designs due to active product status, improved electrical specifications, and extended temperature range. The Bourns 5900-8R2 should be used only when maintaining compatibility with existing legacy systems.