Bourns 4612 10µH Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 4612 is a 10µH unshielded wirewound inductor rated for 500mA with a maximum DC resistance of 1.5Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The 4612 operates across a temperature range of -55°C to 125°C and is RoHS non-compliant, which may impact procurement for regulated applications.

Substiute Parts

4612

Bourns Inc.In Stock: 23134612 Datasheet

Current PartRFQ

5800-100-RC

Bourns Inc.In Stock: 14955800-100-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 5800-100-RC qualifies as a functional substitute for the 4612 based on the following critical parameters:

• Inductance Match: Both parts provide 10µH inductance with ±10% tolerance
• Mounting Compatibility: Both use through-hole axial package configuration
• Shielding Specification: Both are unshielded designs
• Tolerance Alignment: Identical ±10% tolerance specification

The 5800-100-RC represents an upgrade path, offering superior current handling (2.1A versus 500mA) and significantly lower DC resistance (32mOhm versus 1.5Ohm). The substitute uses a drum core ferrite construction instead of phenolic, which provides improved performance characteristics while maintaining the same inductance value and package form factor.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 5800-100-RC is the designated substitute for the obsolete 4612. Selection should be based on the following factors:

Product Status: The 4612 is obsolete with limited inventory availability (2,300 pcs). The 5800-100-RC is active production with established supply (1,471 pcs in stock), ensuring long-term availability.

Compliance Requirements: The 5800-100-RC is RoHS3 compliant, whereas the 4612 is RoHS non-compliant. For applications subject to RoHS regulations, the 5800-100-RC is the required choice.

Thermal Operating Range: The 4612 supports -55°C to 125°C operation. The 5800-100-RC operates from -55°C to 105°C. Applications requiring operation above 105°C must evaluate thermal performance impact.

Current Capacity: The 5800-100-RC provides 4.2x higher current rating (2.1A versus 500mA). This enhanced capacity does not create compatibility issues in applications designed for the 4612, as the substitute can handle the same or greater load.

DC Resistance: The 5800-100-RC exhibits significantly lower DC resistance (32mOhm versus 1.5Ohm). This reduction improves efficiency and reduces heat dissipation in the inductor itself, benefiting overall circuit performance.

Frequently Asked Questions (FAQ)

Q: Can the 5800-100-RC directly replace the 4612 in existing designs?

A: Yes. Both parts share identical inductance (10µH), tolerance (±10%), and axial through-hole mounting. The 5800-100-RC's superior current rating and lower DC resistance make it functionally compatible for all applications designed for the 4612.

Q: What is the impact of the lower DC resistance in the 5800-100-RC?

A: Lower DC resistance reduces resistive losses in the inductor, resulting in less heat generation and improved circuit efficiency. This is a performance advantage with no negative impact on circuit operation.

Q: Does the core material change from phenolic to ferrite affect circuit behavior?

A: The ferrite drum core in the 5800-100-RC provides improved magnetic properties compared to the phenolic core in the 4612. Both maintain the specified 10µH inductance and ±10% tolerance. The ferrite construction contributes to the lower DC resistance and higher current rating.

Q: Is the 5800-100-RC suitable for applications requiring -55°C to 125°C operation?

A: The 5800-100-RC operates from -55°C to 105°C. Applications requiring operation above 105°C must evaluate whether the reduced upper temperature limit impacts system requirements. For operation within -55°C to 105°C, the substitute is fully suitable.

Q: What is the significance of RoHS3 compliance in the 5800-100-RC?

A: RoHS3 compliance indicates the part meets current European Union Restriction of Hazardous Substances regulations. The 4612 is RoHS non-compliant. For applications subject to RoHS requirements, the 5800-100-RC is the compliant alternative.

Q: Are there any package or footprint differences between the two parts?

A: Both parts use axial through-hole mounting with similar physical dimensions (4612: 0.270" Dia x 0.875" L; 5800-100-RC: 0.275" Dia x 0.700" L). The minimal dimensional variation does not affect PCB layout compatibility for standard through-hole designs.