PM43-3R3M-RC Equivalent & Substitute Parts

Part Overview

The PM43-3R3M-RC is a 3.3 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 2.15 A continuous current with a maximum DC resistance of 58mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is classified as Active product status with full ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including inductance value, current rating, DC resistance, package dimensions, and thermal specifications.

Substiute Parts

PM43-3R3M-RC

Bourns Inc.In Stock: 1031PM43-3R3M-RC Datasheet

Current PartRFQ

SDR0403-3R3ML

Bourns Inc.In Stock: 9086SDR0403-3R3ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM43-3R3M-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 3.3 µH with ±20% tolerance
• Current rating: 2.15 A minimum continuous current capacity
• DC resistance: 58 mOhm maximum
• Core type: Ferrite drum core, unshielded configuration
• Package dimensions: 4.50 mm × 4.00 mm × 4.60 mm (maximum height)
• Mounting: Surface mount technology
• Temperature range: -40°C to 125°C minimum
• Regulatory compliance: ROHS3 compliant

The SDR0403-3R3ML meets all specified electrical and mechanical parameters, maintaining identical inductance, current rating, DC resistance, core material, shielding configuration, frequency characteristics, temperature range, and package dimensions.

Parameter Comparison

Engineering Selection Recommendations

Both PM43-3R3M-RC and SDR0403-3R3ML are Active status components manufactured by Bourns Inc. with identical electrical specifications and mechanical compatibility. Selection between these parts may be based on inventory availability and supply chain considerations, as both components satisfy all specified performance requirements and regulatory compliance standards including ROHS3 certification and REACH compliance.

Frequently Asked Questions (FAQ)

Q: Can SDR0403-3R3ML be used as a direct replacement for PM43-3R3M-RC?

A: Yes. Both components share identical inductance (3.3 µH), current rating (2.15 A), DC resistance (58 mOhm max), core material (ferrite), shielding configuration (unshielded), frequency characteristics, operating temperature range (-40°C to 125°C), and package dimensions (4.50 mm × 4.00 mm × 4.60 mm). Surface mount compatibility is maintained.

Q: Are there differences in package designation between these parts?

A: The parts use different series designations (PM43 versus SDR0403) but maintain identical physical package dimensions and mounting specifications. Both are classified as nonstandard package types with surface mount configuration.

Q: What compliance certifications apply to both substitute parts?

A: Both PM43-3R3M-RC and SDR0403-3R3ML are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is rated as 1 (unlimited).

Q: Are there any frequency-dependent performance differences?

A: No. Both components exhibit identical Q factor (28 @ 7.96 MHz) and self-resonant frequency (65 MHz), indicating equivalent high-frequency performance characteristics.

Q: What is the saturation current specification for these inductors?

A: Both parts have a saturation current (Isat) rating of 3 A, providing a 0.85 A margin above the 2.15 A continuous current rating.