Bourns 5900-471 470µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5900-471 is a 470 µH unshielded drum core wirewound inductor rated for 1 A continuous current with a maximum DC resistance of 420 mOhm. 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 5900-471 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or redesigns.

Substiute Parts

5900-471

Bourns Inc.In Stock: 8925900-471 Datasheet

Current PartRFQ

5900-471-RC

Bourns Inc.In Stock: 33595900-471-RC Datasheet

DirectRFQ

4590-474K

API Delevan Inc.In Stock: 9954590-474K Datasheet

SimilarRFQ

4590R-474K

API Delevan Inc.In Stock: 13734590R-474K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5900-471 are identified based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Inductance value: 470 µH (exact match required)
• Inductance tolerance: ±10% (exact match required)
• Core type: Ferrite drum core, unshielded (exact match required)
• Mounting type: Through hole axial (exact match required)
• Test frequency: 1 kHz (exact match required)
• Package dimensions: 0.453" Dia × 0.900" L (exact match required)

Secondary Compatibility Parameters:

• Current rating: Must meet or exceed 1 A minimum
• DC resistance: Must not exceed 420 mOhm maximum
• Operating temperature range: Must encompass or exceed -55°C to 105°C
• RoHS and REACH compliance status

Parts meeting all primary criteria are classified as direct substitutes. Parts meeting primary criteria with enhanced secondary parameters (higher current rating, lower DCR, extended temperature range, or improved compliance status) are classified as compatible upgrades.

Parameter Comparison

Engineering Selection Recommendations

5900-471-RC (Bourns Inc.) - Recommended Direct Substitute

The 5900-471-RC is the primary substitute for the obsolete 5900-471. Both parts are manufactured by Bourns Inc. and share identical electrical specifications: 470 µH inductance, ±10% tolerance, 1 A current rating, 420 mOhm maximum DCR, and -55°C to 105°C operating temperature range. Package dimensions and mounting configuration are identical. The 5900-471-RC is currently in active production status with 3305 units in stock. The primary advantage is ROHS3 compliance, whereas the original 5900-471 is RoHS non-compliant. This part is suitable for direct replacement in all applications where the original component was specified.

4590-474K and 4590R-474K (API Delevan Inc.) - Compatible Alternatives

The 4590-474K and 4590R-474K are manufactured by API Delevan Inc. and meet all primary substitution criteria: 470 µH inductance, ±10% tolerance, ferrite drum core, unshielded configuration, through-hole axial mounting, and 1 kHz test frequency. Both parts offer enhanced current rating (1.3 A versus 1 A) and lower DC resistance (393 mOhm versus 420 mOhm maximum). Operating temperature range extends to 125°C, exceeding the original specification. Package dimensions are nominally equivalent (0.455" Dia × 0.900" L versus 0.453" Dia × 0.900" L), with a 0.002" diameter difference that is within typical PCB pad tolerance.

The 4590R-474K is ROHS3 compliant, while the 4590-474K is RoHS non-compliant. Both parts are in active production. Selection between these alternatives depends on compliance requirements and inventory availability. The 4590R-474K is preferred for applications requiring RoHS3 certification.

Frequently Asked Questions (FAQ)

Q: Can the 5900-471-RC be used as a direct replacement for the 5900-471?

A: Yes. The 5900-471-RC is electrically and mechanically identical to the 5900-471. Both parts have 470 µH inductance, ±10% tolerance, 1 A current rating, 420 mOhm maximum DCR, identical package dimensions, and the same operating temperature range. The 5900-471-RC is the active production equivalent and is recommended for all new designs and legacy system maintenance.

Q: What are the differences between the Bourns 5900-471-RC and the API Delevan 4590R-474K?

A: Both parts share the same 470 µH inductance, ±10% tolerance, ferrite drum core, unshielded configuration, and through-hole axial mounting. The 4590R-474K offers higher current rating (1.3 A versus 1 A), lower DC resistance (393 mOhm versus 420 mOhm), and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). Package dimensions differ slightly (0.455" Dia versus 0.453" Dia), a 0.002" difference within standard PCB tolerance. Both are ROHS3 compliant. Selection depends on application current requirements and thermal environment.

Q: Are there any package or footprint compatibility concerns with the API Delevan alternatives?

A: The API Delevan 4590-474K and 4590R-474K have a nominal diameter of 0.455" compared to 0.453" for the Bourns parts, a difference of 0.002". This minimal variation is within standard PCB pad tolerance and does not present mechanical compatibility issues for through-hole axial mounting. Axial lead spacing and length (0.900") are identical across all parts.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring RoHS3 compliance, the 5900-471-RC (Bourns) is the recommended choice as the direct active production equivalent. For applications requiring enhanced current handling or extended temperature range, the 4590R-474K (API Delevan) provides superior performance specifications while maintaining RoHS3 compliance. Both parts are in active production with adequate inventory availability.

Q: What is the impact of the lower saturation current in the API Delevan parts?

A: The 4590-474K and 4590R-474K have saturation current of 800 mA compared to 1.2 A for the Bourns parts. Saturation current defines the threshold at which inductance begins to degrade under high current conditions. For applications operating at or near 1 A continuous current, the API Delevan saturation specification of 800 mA represents a reduced margin. Applications with transient current spikes or sustained operation near maximum current rating should prioritize the Bourns 5900-471-RC to maintain inductance stability.