Bourns 2109-H 47µH Toroidal Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 2109-H is a 47µH unshielded toroidal inductor rated for 3.6A continuous current with a maximum DC resistance of 55mOhm. This through-hole component operates across the temperature range of -55°C to 105°C and is part of the 2100 series inductor family. The 2109-H has reached obsolete product status, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

2109-H

Bourns Inc.In Stock: 11002109-H Datasheet

Current PartRFQ

2109-H-RC

Bourns Inc.In Stock: 11462109-H-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2109-H is determined by strict equivalence across the following critical parameters:

• Inductance value: 47 µH
• Inductance tolerance: ±15%
• Current rating: 3.6 A minimum
• DC resistance: 55 mOhm maximum
• Shielding configuration: Unshielded
• Core type: Toroidal
• Mounting method: Through Hole
• Physical package: Radial, Horizontal (Open)
• Operating temperature range: -55°C to 105°C minimum
• Mechanical dimensions: 0.860" diameter, 0.450" maximum seated height

The 2109-H-RC meets all these criteria and is classified as a direct substitute. The primary distinction between these parts is product status and compliance certification, not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

The 2109-H-RC is the direct active equivalent for the obsolete 2109-H. Both parts are manufactured by Bourns Inc. and share identical electrical and mechanical specifications. The 2109-H-RC is the appropriate selection for new designs and procurement of replacement stock.

For applications subject to RoHS3 compliance requirements, the 2109-H-RC is the mandated choice, as it meets ROHS3 standards while the original 2109-H does not. Both parts maintain REACH Unaffected status and EAR99 export classification.

The packaging difference (Tape and Reel versus Bulk) reflects standard industry practice for active versus obsolete product lines and does not affect component performance or compatibility in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 2109-H-RC be used as a direct replacement for the 2109-H in existing designs?

A: Yes. The 2109-H-RC is electrically and mechanically identical to the 2109-H. All electrical parameters, physical dimensions, and thermal characteristics are equivalent. The component will function identically in the same circuit application.

Q: What is the primary reason to transition from 2109-H to 2109-H-RC?

A: The 2109-H has reached obsolete product status, meaning Bourns Inc. no longer manufactures or supports this part number. The 2109-H-RC is the active equivalent and ensures continued availability and supply chain reliability.

Q: Does the RoHS3 compliance difference affect circuit performance?

A: No. RoHS3 compliance is a regulatory and material composition standard, not a performance specification. Both parts deliver identical electrical and thermal performance. The 2109-H-RC is required only if your application or end-market mandates RoHS3 compliance.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 2109-H and 2109-H-RC have identical mechanical specifications: 0.860" diameter, 0.450" maximum seated height, and radial horizontal (open) package configuration. They are mechanically interchangeable on PCBs designed for either part.

Q: What is the difference between Tape and Reel and Bulk packaging?

A: Tape and Reel packaging is used for automated assembly processes, while Bulk packaging is used for manual assembly or stock distribution. The component itself is identical; only the delivery format differs. Packaging selection depends on your assembly process requirements, not component performance.

Q: Can I use the 2109-H-RC in applications originally designed for the 2109-H?

A: Yes, without modification. The 2109-H-RC is a direct substitute with no design changes required. It will perform identically in all electrical and thermal operating conditions.