Bourns 5900-680 68µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-680 is a 68µH unshielded drum core wirewound inductor rated for 2.8A continuous current with a maximum DC resistance of 56mOhm. 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 5900-680 carries an obsolete product status. 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.

Substiute Parts

5900-680

Bourns Inc.In Stock: 12405900-680 Datasheet

Current PartRFQ

5900-680-RC

Bourns Inc.In Stock: 27205900-680-RC Datasheet

DirectRFQ

4590-683K

API Delevan Inc.In Stock: 12114590-683K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5900-680 are classified based on electrical and mechanical compatibility within the following criteria:

Direct Substitutes maintain identical electrical specifications (inductance, tolerance, current rating, DC resistance) and mechanical form factor (axial through-hole, physical dimensions). These parts are interchangeable without circuit redesign.

Similar Substitutes share the same inductance value (68µH) and core type (ferrite drum core, unshielded) but may differ in current rating, DC resistance, saturation current, operating temperature range, or physical dimensions within acceptable tolerances. These parts require engineering evaluation to confirm suitability for the specific application.

The key parameters determining substitution eligibility are:

• Inductance value (68 µH)
• Tolerance (±10%)
• Core material and shielding (Ferrite, Unshielded)
• Mounting type (Through Hole, Axial)
• Physical form factor compatibility
• Current handling capability relative to circuit requirements

Parameter Comparison

Engineering Selection Recommendations

5900-680-RC (Bourns Inc.) is the primary substitute for the obsolete 5900-680. This part is electrically and mechanically identical, maintaining the same inductance, current rating, DC resistance, and physical dimensions. The 5900-680-RC carries active product status and is RoHS3 compliant, making it suitable for new designs and ongoing production support. The transition from the obsolete 5900-680 to the 5900-680-RC requires no circuit modifications.

4590-683K (API Delevan Inc.) is a similar substitute offering the same 68µH inductance value with a higher current rating of 3.355A compared to the 2.8A of the original part. The DC resistance is marginally higher at 59mOhm versus 56mOhm. Physical dimensions are nearly identical with a negligible difference in diameter (0.455" versus 0.453"). The operating temperature range extends to 125°C, providing broader thermal capability. This part is suitable for applications where the increased current capacity and extended temperature range provide design margin. The 4590-683K remains active and is available in bulk packaging.

Selection between these substitutes depends on supply availability, compliance requirements, and application-specific current and temperature demands.

Frequently Asked Questions (FAQ)

Q: Can the 5900-680-RC be used as a direct replacement for the 5900-680?

A: Yes. The 5900-680-RC is electrically and mechanically identical to the 5900-680, with identical inductance (68µH), current rating (2.8A), DC resistance (56mOhm), and physical dimensions. No circuit modifications are required. The primary difference is product status (active versus obsolete) and RoHS compliance (RoHS3 compliant versus non-compliant).

Q: What are the key differences between the 5900-680-RC and the 4590-683K?

A: Both parts share the same 68µH inductance and ±10% tolerance. The 4590-683K offers a higher current rating (3.355A versus 2.8A) and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). DC resistance is slightly higher at 59mOhm versus 56mOhm. Physical dimensions are nearly identical. The 4590-683K is manufactured by API Delevan Inc. rather than Bourns Inc.

Q: Is the 4590-683K suitable for applications designed for the 5900-680?

A: The 4590-683K is suitable for applications where the circuit current does not exceed 2.8A and the operating temperature remains within -55°C to 105°C. The higher current rating and extended temperature range of the 4590-683K provide additional design margin. The marginal increase in DC resistance (3mOhm) is typically negligible in most filtering and energy storage applications. Physical dimensions are compatible with standard through-hole PCB layouts.

Q: What packaging options are available for these substitutes?

A: The 5900-680-RC is supplied in tray packaging. The 4590-683K is supplied in bulk packaging. Packaging selection may influence procurement logistics and handling requirements for production environments.

Q: Are there RoHS compliance considerations when selecting a substitute?

A: The 5900-680 and 4590-683K are both RoHS non-compliant. The 5900-680-RC is RoHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 5900-680-RC is the appropriate selection.