Bourns 5900-393 Equivalent & Substitute Parts

Part Overview

The Bourns 5900-393 is a 39 mH unshielded drum core wirewound inductor rated for 120 mA continuous current with a maximum DC resistance of 31 Ohm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for general-purpose filtering and energy storage applications in electronic circuits.

The 5900-393 carries an obsolete product status, making it necessary to identify functionally equivalent alternatives for new designs and ongoing production requirements. The substitute part identified maintains the same inductance value and core construction while offering improved current handling and active product availability.

Substiute Parts

5900-393

Bourns Inc.In Stock: 12915900-393 Datasheet

Current PartRFQ

4590-396K

API Delevan Inc.In Stock: 10254590-396K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 5900-393 is determined by the following critical parameters:

• Inductance Value: Must be 39 mH ±10% tolerance
• Core Construction: Ferrite drum core, unshielded configuration
• Mounting Interface: Through-hole axial package with compatible physical dimensions
• Current Handling: Minimum 120 mA continuous rating
• DC Resistance: Maximum 31 Ohm to maintain circuit performance
• Operating Temperature: Minimum -55°C to 105°C range

The API Delevan 4590-396K meets all substitution criteria. It maintains identical inductance and tolerance specifications, ferrite drum core construction, and through-hole axial mounting. The substitute part exceeds the current rating requirement (150 mA vs. 120 mA) and provides lower DC resistance (29.7 Ohm vs. 31 Ohm maximum), resulting in improved thermal performance and reduced power dissipation in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 4590-396K is the qualified substitute for the Bourns 5900-393 based on the following engineering criteria:

Product Status: The 5900-393 is obsolete, while the 4590-396K maintains active product status with confirmed inventory availability (962 pieces in stock). This ensures long-term supply chain continuity for production and field service applications.

Electrical Compatibility: Both components share identical inductance values (39 mH) and tolerance specifications (±10%). The substitute part's superior current rating (150 mA vs. 120 mA) and lower DC resistance (29.7 Ohm vs. 31 Ohm) provide enhanced performance margins without circuit modification.

Physical Compatibility: Package dimensions are virtually identical (0.453" vs. 0.455" diameter; both 0.900" length), ensuring direct mechanical fit in existing through-hole PCB layouts without redesign.

Compliance Considerations: Both components carry identical RoHS non-compliant and REACH unaffected designations. The substitute part extends the operating temperature range to 125°C, providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4590-396K be used as a direct replacement for the Bourns 5900-393?

A: Yes. The 4590-396K meets all electrical and mechanical substitution criteria. Identical inductance values, core construction, and through-hole axial mounting enable direct PCB substitution without circuit modification.

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

A: The primary differences are product status (obsolete vs. active), current rating (120 mA vs. 150 mA), DC resistance (31 Ohm vs. 29.7 Ohm maximum), and operating temperature range (-55°C to 105°C vs. -55°C to 125°C). The substitute part offers improved electrical performance and extended temperature capability.

Q: Are the physical dimensions identical?

A: Dimensions are nearly identical. The 5900-393 measures 0.453" diameter × 0.900" length, while the 4590-396K measures 0.455" diameter × 0.900" length. This 0.002" diameter difference is negligible for through-hole PCB mounting and does not affect mechanical fit.

Q: Do both inductors have the same RoHS compliance status?

A: Yes. Both the Bourns 5900-393 and API Delevan 4590-396K are RoHS non-compliant and REACH unaffected. Compliance status is identical between the two parts.

Q: What is the saturation current difference, and does it matter for substitution?

A: The 5900-393 has a saturation current of 130 mA, while the 4590-396K has 90 mA. For applications operating at or below 120 mA continuous current, the 4590-396K's lower saturation point does not present a functional limitation, as the continuous current rating (150 mA) exceeds the original specification.