Bourns 5900-470 47µH Axial Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-470 is a 47µH unshielded drum core wirewound inductor rated for 3.1A continuous current with a maximum DC resistance of 45mOhm. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The 5900-470 is classified as obsolete. Locating equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements. Active alternatives with matching or superior electrical characteristics are available from multiple manufacturers.

Substiute Parts

5900-470

Bourns Inc.In Stock: 8535900-470 Datasheet

Current PartRFQ

5900-470-RC

Bourns Inc.In Stock: 36725900-470-RC Datasheet

DirectRFQ

4590-473K

API Delevan Inc.In Stock: 7244590-473K Datasheet

SimilarRFQ

AIAP-03-470K

Abracon LLCIn Stock: 38571AIAP-03-470K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 47 µH (exact match required)
• Tolerance: ±10% (standard specification)
• Mounting type: Through hole axial configuration
• Core material: Ferrite or equivalent unshielded construction
• Test frequency: 1 kHz

Acceptable Variation Parameters:

• Current rating: Must meet or exceed 3.1A minimum
• DC resistance: Lower values are acceptable; higher values require evaluation
• Saturation current: Values above 3.1A are acceptable
• Operating temperature: Extended ranges are acceptable; minimum -55°C and maximum ≥105°C required
• Physical dimensions: Minor variations within axial package tolerance acceptable

Non-Substitutable Parameters:

• Inductance value (must remain 47 µH)
• Tolerance band (must remain ±10%)
• Mounting configuration (must remain through-hole axial)

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Preferred): The 5900-470-RC is the primary substitute. Manufactured by Bourns Inc., it maintains identical electrical specifications to the obsolete 5900-470 while offering active product status and ROHS3 compliance. This part is functionally equivalent with no design modifications required. Packaging differs (tray vs. bulk), but electrical performance is unchanged.

Alternative Substitutes (Cross-Manufacturer): The 4590-473K (API Delevan Inc.) and AIAP-03-470K (Abracon LLC) are functionally compatible alternatives. Both maintain the 47µH inductance and ±10% tolerance. Key differences include:

• 4590-473K: Higher current rating (4.45A vs. 3.1A), lower DC resistance (34mOhm vs. 45mOhm), extended temperature range to 125°C. Saturation current is lower (2.5A). RoHS non-compliant.
• AIAP-03-470K: Higher current rating (3.98A vs. 3.1A), lower DC resistance (35mOhm vs. 45mOhm), extended temperature range to 125°C, ROHS3 compliant. Saturation current not specified.

Both alternatives are suitable for applications where the original 3.1A rating is not a limiting constraint and where improved thermal performance or compliance requirements justify cross-manufacturer substitution.

Compliance Considerations: If RoHS3 compliance is required, select 5900-470-RC or AIAP-03-470K. The 4590-473K remains non-compliant.

Frequently Asked Questions (FAQ)

Q: Can the 5900-470-RC be used as a direct replacement for the 5900-470? A: Yes. The 5900-470-RC is electrically and mechanically identical to the 5900-470. The only difference is packaging (tray vs. bulk) and product status (active vs. obsolete). No circuit modifications are required.

Q: What is the difference between the Bourns 5900-470-RC and the API Delevan 4590-473K? A: Both are 47µH axial wirewound inductors with ±10% tolerance. The 4590-473K offers higher current rating (4.45A vs. 3.1A) and lower DC resistance (34mOhm vs. 45mOhm), resulting in reduced power dissipation. The 4590-473K also supports extended temperature operation to 125°C. However, its saturation current is lower (2.5A vs. 3.8A), and it is RoHS non-compliant.

Q: Is the AIAP-03-470K compatible with the original 5900-470 design? A: Yes. The AIAP-03-470K maintains the 47µH inductance and ±10% tolerance required for compatibility. It offers improved current handling (3.98A vs. 3.1A), lower DC resistance (35mOhm vs. 45mOhm), and ROHS3 compliance. Physical dimensions are within axial package tolerance.

Q: Why do the substitute parts have different current ratings? A: Current rating reflects the maximum continuous current the inductor can handle without exceeding temperature limits. The 4590-473K and AIAP-03-470K have improved core designs or wire gauges, allowing higher current capacity. For applications requiring only 3.1A, all three parts are suitable. For higher current applications, the alternatives provide additional margin.

Q: Does lower DC resistance affect circuit performance? A: Lower DC resistance reduces power dissipation (I²R losses) and heat generation. For applications sensitive to power efficiency or thermal management, the 4590-473K (34mOhm) and AIAP-03-470K (35mOhm) offer advantages over the 45mOhm specification of the original 5900-470. Circuit inductance value remains unchanged.

Q: Are there packaging considerations when substituting these parts? A: The 5900-470-RC is supplied in trays; the 4590-473K and AIAP-03-470K are supplied in bulk. All three maintain identical through-hole axial package geometry. Handling and assembly processes remain unchanged.

Q: Which substitute should I select for new designs? A: For new designs requiring RoHS3 compliance, select the AIAP-03-470K (Abracon LLC) or 5900-470-RC (Bourns Inc.). Both offer active product status and regulatory compliance. The AIAP-03-470K provides superior current handling and lower DC resistance. The 5900-470-RC maintains the original Bourns design lineage.