Bourns 5900-103 10 mH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-103 is a 10 mH unshielded drum core wirewound inductor rated for 230 mA continuous current with a maximum DC resistance of 7.6 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 5900-103 carries an obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

5900-103

Bourns Inc.In Stock: 10845900-103 Datasheet

Current PartRFQ

5900-103-RC

Bourns Inc.In Stock: 19715900-103-RC Datasheet

DirectRFQ

4590-106K

API Delevan Inc.In Stock: 10094590-106K Datasheet

SimilarRFQ

4590R-106K

API Delevan Inc.In Stock: 12594590R-106K Datasheet

SimilarRFQ

AIAP-03-103K

Abracon LLCIn Stock: 3864AIAP-03-103K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5900-103 are classified based on strict electrical and mechanical compatibility criteria:

Direct Equivalent (Same Manufacturer): The 5900-103-RC is a direct equivalent manufactured by Bourns Inc. It maintains identical electrical specifications: 10 mH inductance, ±10% tolerance, 230 mA current rating, 260 mA saturation current, and 7.6 Ohm maximum DC resistance. The primary difference is packaging format (Tray vs. standard) and product status (Active vs. Obsolete). Physical dimensions and operating temperature range remain unchanged.

Similar Substitutes (Cross-Manufacturer): The 4590-106K and 4590R-106K (API Delevan Inc.) and AIAP-03-103K (Abracon LLC) share the core electrical specification of 10 mH inductance at ±10% tolerance and unshielded axial configuration. These parts differ in current rating (300 mA and 266 mA respectively), saturation current characteristics, DC resistance (7.3 Ohm), and operating temperature range (up to 125°C). Physical dimensions are within 0.002" to 0.006" variance in diameter and length.

Substitution Criteria:

• Inductance value: 10 mH (fixed)
• Inductance tolerance: ±10% (fixed)
• Core type: Ferrite, unshielded (fixed)
• Mounting: Through hole, axial package (fixed)
• Test frequency: 1 kHz (fixed)
• Current rating: Minimum 230 mA required
• DC resistance: Maximum 7.6 Ohm preferred; 7.3 Ohm acceptable
• Operating temperature: Minimum -55°C to 105°C required
• Physical fit: Axial dimensions within ±0.010" tolerance

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Bourns 5900-103-RC

The 5900-103-RC is the preferred substitute for the obsolete 5900-103. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The only difference is packaging format (Tray). Current inventory is 1934 pieces. This selection eliminates any design re-qualification requirements.

Secondary Recommendations: API Delevan 4590R-106K or Abracon AIAP-03-103K

When the 5900-103-RC is unavailable, the 4590R-106K or AIAP-03-103K are acceptable substitutes for applications where the following conditions are met:

• Circuit current demand does not exceed 230 mA continuous operation
• The lower saturation current (180 mA for API Delevan parts) does not conflict with transient current spikes
• Extended operating temperature range to 125°C provides design margin
• Lower DC resistance (7.3 Ohm vs. 7.6 Ohm) reduces power dissipation
• ROHS3 compliance is required for new designs

Both parts are physically compatible with standard through-hole PCB layouts. The 4590R-106K offers ROHS3 compliance; the AIAP-03-103K provides the highest inventory availability (3822 pieces).

Not Recommended: API Delevan 4590-106K

The 4590-106K is functionally equivalent to the 4590R-106K but carries RoHS non-compliant status. Use only when legacy component specifications explicitly permit non-compliant materials.

Frequently Asked Questions (FAQ)

Q: Can the 5900-103-RC be used as a direct drop-in replacement for the 5900-103?

A: Yes. The 5900-103-RC is electrically and mechanically identical to the 5900-103. The only difference is packaging format (Tray vs. standard). No circuit re-design or re-qualification is required. The part is pin-compatible and footprint-compatible for through-hole assembly.

Q: What is the difference between the 4590-106K and 4590R-106K?

A: Both parts are manufactured by API Delevan Inc. and share identical electrical specifications: 10 mH inductance, 300 mA current rating, 7.3 Ohm DC resistance, and -55°C to 125°C operating range. The primary difference is RoHS compliance: the 4590R-106K is ROHS3 compliant, while the 4590-106K is non-compliant. Select the 4590R-106K for new designs requiring RoHS certification.

Q: Can I use the Abracon AIAP-03-103K in place of the Bourns 5900-103?

A: The AIAP-03-103K is a functional substitute if your circuit operates at or below 230 mA continuous current. The part shares the same 10 mH inductance, ±10% tolerance, unshielded axial configuration, and through-hole mounting. Physical dimensions are within 0.010" tolerance. The AIAP-03-103K offers ROHS3 compliance and extended temperature range (-55°C to 125°C). However, saturation current data is not provided for this part; verify compatibility with your application's transient current profile before selection.

Q: Why do the API Delevan and Abracon parts have higher current ratings than the Bourns 5900-103?

A: The 4590-106K, 4590R-106K, and AIAP-03-103K are rated for 300 mA, 300 mA, and 266 mA respectively, compared to the 5900-103's 230 mA rating. Higher current ratings indicate improved thermal design or core material selection. These parts are suitable for applications requiring the 5900-103's 230 mA specification and provide additional current margin. However, saturation current characteristics differ; verify that transient current spikes do not exceed the saturation current limit of each substitute part.

Q: Are there physical fit concerns when substituting these parts on existing PCBs?

A: All substitute parts use standard axial through-hole packaging with dimensions within ±0.010" of the original 5900-103. Physical fit on existing PCBs is not a concern. Lead spacing and hole diameter compatibility are maintained across all listed substitutes.

Q: Which substitute part should I select for a new design?

A: For new designs, select the Bourns 5900-103-RC if available. If unavailable, the 4590R-106K (API Delevan) or AIAP-03-103K (Abracon) are acceptable, provided your circuit operates at or below 230 mA continuous current and does not require saturation current specifications below 180 mA. Both alternatives offer ROHS3 compliance and extended operating temperature range.