CR43-3R3MC Equivalent & Substitute Parts Reference

Part Overview

The CR43-3R3MC is a 3.3 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This component is rated for 1.44 A continuous current with a maximum DC resistance of 86.2 mOhm and operates across the temperature range of -40°C to 100°C. The part is currently classified as obsolete, making equivalent and substitute components necessary for ongoing design support and production continuity.

Substiute Parts

CR43-3R3MC

Sumida America Components Inc.In Stock: 777CR43-3R3MC Datasheet

Current PartRFQ

CR43NP-3R3MC

Sumida America Components Inc.In Stock: 5489CR43NP-3R3MC Datasheet

DirectRFQ

PF0580.332NL

Pulse ElectronicsIn Stock: 1341PF0580.332NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CR43-3R3MC is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

• Inductance value: 3.3 µH (exact match required)
• Mounting type: Surface Mount (exact match required)
• Physical dimensions: Compatible with 4.80mm x 4.30mm x 3.50mm envelope
• Core construction: Unshielded wirewound configuration
• Operating temperature range: Minimum -40°C to 100°C coverage

Secondary Parameters Allowing Variation:

• Current rating: May exceed 1.44 A (higher ratings are acceptable)
• DC resistance: May be lower than 86.2 mOhm (lower resistance is acceptable)
• Inductance tolerance: May be tighter than ±20%
• RoHS compliance: Active status parts preferred over obsolete

Two substitute parts meet these criteria with documented compatibility.

Parameter Comparison

Engineering Selection Recommendations

CR43NP-3R3MC (Direct Substitute - Recommended Primary Choice)

The CR43NP-3R3MC is the direct equivalent to the CR43-3R3MC. Both parts are manufactured by Sumida America Components Inc. and share identical electrical specifications: 3.3 µH inductance, 1.44 A current rating, 86.2 mOhm maximum DC resistance, and 60 MHz self-resonant frequency. Physical dimensions and mounting characteristics are identical. The CR43NP-3R3MC differs only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Bulk). The CR43NP-3R3MC carries ROHS3 compliance, addressing regulatory requirements that the obsolete CR43-3R3MC does not meet. This part is the preferred substitute for direct replacement in new designs and production continuity.

PF0580.332NL (Similar Substitute - Secondary Choice)

The PF0580.332NL manufactured by Pulse Electronics provides functional equivalence with measurable performance improvements. The inductance value (3.3 µH) and core configuration (unshielded wirewound) match the CR43-3R3MC. Physical dimensions are within acceptable tolerance (4.70mm x 4.20mm x 3.48mm versus 4.80mm x 4.30mm x 3.50mm). The PF0580.332NL offers superior electrical performance: current rating of 1.8 A exceeds the 1.44 A requirement, and DC resistance of 63 mOhm is lower than the 86.2 mOhm maximum. Inductance tolerance is tighter at ±15% versus ±20%. Operating temperature range extends to 125°C, providing additional thermal margin. The PF0580.332NL is ROHS3 compliant and carries Active product status. This part is suitable for applications where improved performance margins and extended temperature operation are beneficial.

Selection Criteria:

• For direct replacement with identical specifications: CR43NP-3R3MC
• For improved performance and thermal margin: PF0580.332NL
• Both parts support RoHS3 compliance requirements
• Both parts maintain unlimited moisture sensitivity rating
• Physical footprint compatibility confirmed for both substitutes

Frequently Asked Questions (FAQ)

Q: Can CR43NP-3R3MC be used as a direct replacement for CR43-3R3MC?

A: Yes. The CR43NP-3R3MC is the direct equivalent. Both parts share identical inductance (3.3 µH), current rating (1.44 A), DC resistance (86.2 mOhm Max), and physical dimensions (4.80mm x 4.30mm x 3.50mm). The only differences are product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Bulk). No circuit redesign is required.

Q: What are the key differences between CR43NP-3R3MC and PF0580.332NL?

A: Both parts maintain the same 3.3 µH inductance and unshielded surface mount configuration. PF0580.332NL offers higher current rating (1.8 A vs. 1.44 A), lower DC resistance (63 mOhm vs. 86.2 mOhm), tighter inductance tolerance (±15% vs. ±20%), and extended operating temperature range (-40°C to 125°C vs. -40°C to 100°C). Physical dimensions are slightly smaller (4.70mm x 4.20mm x 3.48mm). Both are ROHS3 compliant and Active status.

Q: Are the physical dimensions of PF0580.332NL compatible with CR43-3R3MC footprints?

A: Yes. The PF0580.332NL dimensions (4.70mm x 4.20mm x 3.48mm) are within acceptable tolerance of the CR43-3R3MC (4.80mm x 4.30mm x 3.50mm). The part fits within the same PCB footprint envelope. No layout modifications are required.

Q: Does PF0580.332NL meet RoHS compliance requirements?

A: Yes. PF0580.332NL carries ROHS3 compliance certification. CR43NP-3R3MC also carries ROHS3 compliance. The original CR43-3R3MC is RoHS non-compliant.

Q: What is the moisture sensitivity level for these parts?

A: All three parts (CR43-3R3MC, CR43NP-3R3MC, and PF0580.332NL) carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: Can PF0580.332NL be used in applications requiring exactly 1.44 A current rating?

A: Yes. The PF0580.332NL current rating of 1.8 A exceeds the 1.44 A requirement. The part operates safely at 1.44 A with additional current margin. This provides design headroom and improved reliability.

Q: What packaging options are available for these substitutes?

A: CR43NP-3R3MC is supplied in Tape & Reel (TR) format. PF0580.332NL is supplied in Tray format. Both formats are standard for surface mount production environments. Packaging selection depends on assembly process requirements.

Q: Are there inventory considerations for these substitutes?

A: CR43NP-3R3MC has 5,426 pieces in stock. PF0580.332NL has 1,240 pieces in stock. Both parts maintain active inventory status, supporting production continuity. The original CR43-3R3MC has 739 pieces available but is obsolete.