Bourns 5900-271-RC Equivalent & Substitute Parts

Part Overview

The Bourns 5900-271-RC is a 270 µH unshielded drum core wirewound inductor rated for 1.4 A continuous current with a maximum DC resistance of 210 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 values in standard axial package configurations. The part maintains active product status with full RoHS3 compliance and REACH unaffected designation. Equivalent and substitute parts are identified when they maintain the same inductance value, tolerance, core material, shielding characteristics, and mounting type while operating within compatible electrical and thermal specifications.

Substiute Parts

5900-271-RC

Bourns Inc.In Stock: 9285900-271-RC Datasheet

Current PartRFQ

4590R-274K

API Delevan Inc.In Stock: 50384590R-274K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 5900-271-RC are qualified based on the following criteria:

Primary Matching Parameters:

• Inductance value: 270 µH
• Inductance tolerance: ±10%
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Through hole
• Package type: Axial

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 1.4 A
• DC resistance: Substitute must not exceed 210 mOhm maximum
• Operating temperature range: Substitute must cover or exceed -55°C to 105°C
• Physical dimensions: Minor variations acceptable within standard axial package tolerances
• Saturation current: No constraint specified for substitution

The API Delevan 4590R-274K qualifies as a substitute part by maintaining identical inductance, tolerance, core material, shielding, and mounting characteristics while providing enhanced current rating (1.715 A versus 1.4 A) and extended upper operating temperature (125°C versus 105°C).

Parameter Comparison

Engineering Selection Recommendations

Both the Bourns 5900-271-RC and API Delevan 4590R-274K maintain active product status with full regulatory compliance. The API Delevan 4590R-274K provides operational advantages through higher current rating capacity (1.715 A versus 1.4 A) and extended upper temperature limit (125°C versus 105°C), making it suitable for applications requiring thermal headroom or higher current margins. The Bourns part offers lower DC resistance (210 mOhm maximum versus 226 mOhm maximum), which may be preferred in applications where resistive losses require minimization. Both parts satisfy RoHS3 and REACH compliance requirements. Physical dimensions remain compatible within standard axial package tolerances.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4590R-274K directly replace the Bourns 5900-271-RC?

A: Yes. Both parts maintain identical inductance (270 µH), tolerance (±10%), core material (ferrite), shielding (unshielded), and mounting configuration (through-hole axial). The API Delevan part provides higher current rating and extended temperature range, making it functionally compatible for direct substitution in existing designs.

Q: What is the difference in DC resistance between these parts?

A: The Bourns 5900-271-RC specifies 210 mOhm maximum DC resistance, while the API Delevan 4590R-274K specifies 226 mOhm maximum. The 16 mOhm difference represents approximately 7.6% higher resistance in the substitute part. Applications sensitive to resistive losses should account for this variance.

Q: Are there physical dimension differences?

A: Dimensions are nearly identical. The Bourns part measures 0.453" diameter × 0.900" length (11.51mm × 22.86mm), while the API Delevan part measures 0.455" diameter × 0.900" length (11.55mm × 22.86mm). The 0.002" diameter difference is within standard axial package tolerances and does not affect PCB layout compatibility.

Q: What are the temperature operating ranges?

A: The Bourns 5900-271-RC operates from -55°C to 105°C. The API Delevan 4590R-274K extends the upper limit to 125°C. Both maintain the same lower temperature limit of -55°C. Applications requiring operation above 105°C should specify the API Delevan substitute.

Q: Do both parts meet regulatory requirements?

A: Yes. Both the Bourns 5900-271-RC and API Delevan 4590R-274K are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.