Bourns 6000-3R3M-RC 3.3µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 6000-3R3M-RC is a 3.3µH unshielded drum core wirewound inductor rated for 5.5A continuous current with 25mOhm maximum DC resistance. This through-hole radial component operates across -55°C to 105°C and is designed for applications requiring stable inductance at 7.96MHz test frequency.

The 6000 series carries a "Not For New Designs" status, making equivalent substitutes necessary for ongoing production and new circuit implementations. Direct replacements and functionally equivalent alternatives are available from multiple manufacturers while maintaining core electrical and mechanical specifications.

Substiute Parts

6000-3R3M-RC

Bourns Inc.In Stock: 21096000-3R3M-RC Datasheet

Current PartRFQ

RLB9012-3R3ML

Bourns Inc.In Stock: 1292RLB9012-3R3ML Datasheet

DirectRFQ

4554R-3R3M

API Delevan Inc.In Stock: 8524554R-3R3M Datasheet

SimilarRFQ

AIUR-02H-3R3M

Abracon LLCIn Stock: 772AIUR-02H-3R3M Datasheet

SimilarRFQ

AIUR-03-3R3M

Abracon LLCIn Stock: 653AIUR-03-3R3M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment across the following critical parameters:

Mandatory Match Criteria:

• Inductance value: 3.3µH with ±20% tolerance
• Mounting type: Through hole, radial configuration
• Package case: Radial, vertical cylinder form factor
• Core material: Ferrite construction
• Shielding: Unshielded design

Electrical Performance Criteria:

• Current rating must equal or exceed 5.5A
• DC resistance must not exceed 25mOhm
• Q factor at 7.96MHz must be maintained at 20 or higher
• Self-resonant frequency must support intended application bandwidth

Environmental Criteria:

• Operating temperature range must encompass or exceed -55°C to 105°C
• RoHS3 compliance required for regulatory alignment

Substitute Classification:

Direct Equivalent (Full Specification Match):

• RLB9012-3R3ML (Bourns Inc.) – Active product status with enhanced temperature range (-55°C to 125°C)

Functionally Equivalent (Electrical Match with Minor Dimensional Variance):

• 4554R-3R3M (API Delevan Inc.) – Matches all electrical specifications; operates within -40°C to 85°C range
• AIUR-03-3R3M (Abracon LLC) – Matches inductance and DCR; current rating 2.9A limits high-current applications

Limited Compatibility (Reduced Current Rating):

• AIUR-02H-3R3M (Abracon LLC) – 2.7A current rating below 5.5A requirement; not suitable for full-load applications

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: RLB9012-3R3ML

The Bourns RLB9012-3R3ML provides direct electrical and mechanical equivalence to the 6000-3R3M-RC with active product status. Identical inductance, current rating, and DCR specifications ensure drop-in compatibility. The extended operating temperature range (-55°C to 125°C) exceeds the original specification, providing additional thermal margin. Identical physical dimensions (0.354" diameter, 0.480" height) confirm PCB footprint compatibility. ROHS3 compliance and active manufacturing status support long-term supply chain stability.

Secondary Substitute: 4554R-3R3M

The API Delevan 4554R-3R3M matches all critical electrical parameters (3.3µH, 5.5A, 25mOhm DCR, 20 Q-factor). Slight dimensional variance (0.340" diameter, 0.433" height) requires PCB layout verification but remains within radial through-hole mounting compatibility. Operating temperature range (-40°C to 85°C) is narrower than the original; applications requiring -55°C operation must exclude this option. Active product status and ROHS3 compliance support production use.

Limited Compatibility: AIUR-03-3R3M

The Abracon AIUR-03-3R3M maintains inductance, DCR, and Q-factor specifications but carries a reduced current rating of 2.9A versus the required 5.5A. This part is suitable only for applications where actual circuit current remains below 2.9A continuous operation. Operating temperature range (-25°C to 85°C) further restricts use in extended cold environments. Selection requires explicit verification that circuit current demands do not exceed the 2.9A rating.

Not Recommended: AIUR-02H-3R3M

The Abracon AIUR-02H-3R3M exhibits insufficient current rating (2.7A), elevated DCR (30mOhm), reduced Q-factor (15), and significantly larger physical dimensions (0.830" diameter, 0.831" height). These deviations preclude direct substitution for the 6000-3R3M-RC specification.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-3R3ML be used as a direct replacement for the 6000-3R3M-RC?

A: Yes. The RLB9012-3R3ML provides identical electrical specifications (3.3µH, 5.5A, 25mOhm DCR) and physical dimensions (0.354" diameter, 0.480" height). The extended temperature range (-55°C to 125°C) exceeds the original operating window. No circuit modifications are required.

Q: What is the primary reason the 6000-3R3M-RC carries "Not For New Designs" status?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new circuit implementations. Active equivalent products such as the RLB9012-3R3ML are available to support ongoing production and new designs.

Q: Can the 4554R-3R3M be used in applications requiring -55°C operation?

A: No. The 4554R-3R3M operates from -40°C to 85°C. Applications requiring -55°C minimum temperature must use the RLB9012-3R3ML or retain the original 6000-3R3M-RC if available inventory permits.

Q: Why is the AIUR-03-3R3M listed as functionally equivalent if its current rating is only 2.9A?

A: The AIUR-03-3R3M matches inductance, DCR, and Q-factor specifications. However, the 2.9A current rating is below the 5.5A requirement. This part is suitable only for circuits where actual operating current remains below 2.9A. Circuit current verification is mandatory before selection.

Q: Are there physical footprint differences between substitute parts?

A: The RLB9012-3R3ML and AIUR-03-3R3M maintain identical dimensions (0.354" diameter, 0.472-0.480" height) to the original. The 4554R-3R3M exhibits minor variance (0.340" diameter, 0.433" height) requiring PCB layout confirmation. The AIUR-02H-3R3M is significantly larger (0.830" diameter, 0.831" height) and is not footprint-compatible.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, ensuring regulatory alignment with the original 6000-3R3M-RC specification.

Q: What is the significance of the Q-factor specification in inductor selection?

A: Q-factor (quality factor) at 7.96MHz indicates the inductor's efficiency and frequency response characteristics. All recommended substitutes maintain Q=20 at 7.96MHz, matching the original specification. The AIUR-02H-3R3M exhibits reduced Q=15, indicating lower efficiency at this frequency.

Q: Can packaging format differences affect circuit performance?

A: Packaging format (Bulk vs. Tray) does not affect electrical or mechanical performance. The RLB9012-3R3ML ships in Tray format while the original uses Bulk packaging. This distinction impacts supply chain logistics only, not component functionality.