PM2120-2R2M Equivalent & Substitute Parts

Part Overview

The PM2120-2R2M is a 2.2 µH unshielded toroidal inductor manufactured by Bourns Inc., rated for 19.7 A continuous current with a maximum DC resistance of 3 mOhm. This component is designed for surface mount applications in power conversion and filtering circuits. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications.

Substiute Parts

PM2120-2R2M

Bourns Inc.In Stock: 891PM2120-2R2M Datasheet

Current PartRFQ

PM2120-2R2M-RC

Bourns Inc.In Stock: 1085PM2120-2R2M-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PM2120-2R2M-RC qualifies as a direct substitute based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following parameters:

• Inductance value: 2.2 µH with ±20% tolerance
• Current rating: 19.7 A minimum
• DC resistance: 3 mOhm maximum
• Core material: Iron
• Shielding configuration: Unshielded
• Physical footprint: 30.50 mm × 25.40 mm × 20.83 mm (Max height)
• Operating temperature range: -55°C to 105°C
• Mounting configuration: Surface mount, nonstandard package

The PM2120-2R2M-RC maintains all electrical performance characteristics and physical dimensions required for direct replacement in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The PM2120-2R2M-RC is the appropriate selection for new designs and ongoing production applications. This substitute part maintains identical electrical performance and physical compatibility while offering the following advantages:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance satisfies current environmental and regulatory requirements
• Tray packaging provides improved handling and inventory management compared to the obsolete variant
• All electrical parameters remain unchanged, eliminating circuit redesign requirements

The obsolete status of the PM2120-2R2M necessitates transition to the PM2120-2R2M-RC for continued component sourcing.

Frequently Asked Questions (FAQ)

Q: Can the PM2120-2R2M-RC be used as a direct replacement for PM2120-2R2M in existing designs?

A: Yes. Both parts share identical inductance (2.2 µH), current rating (19.7 A), DC resistance (3 mOhm max), core material (iron), and physical dimensions (30.50 mm × 25.40 mm × 20.83 mm max height). No circuit modifications are required.

Q: What is the primary difference between these two part numbers?

A: The PM2120-2R2M-RC is the active production variant with ROHS3 compliance and tray packaging. The PM2120-2R2M is obsolete. Electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with PCB footprints?

A: No. Both parts use identical surface mount footprints and physical dimensions, ensuring direct PCB compatibility without layout modifications.

Q: Does the packaging change from nonstandard to tray affect circuit performance?

A: No. Packaging type affects only handling, storage, and logistics. Electrical and thermal performance remain unchanged.

Q: Is RoHS compliance a functional requirement for substitution?

A: RoHS compliance is a regulatory and supply chain consideration. The PM2120-2R2M-RC meets current environmental standards, while the PM2120-2R2M does not. For applications subject to RoHS requirements, the PM2120-2R2M-RC is mandatory.