CR75-271KC Equivalent & Substitute Parts

Part Overview

The CR75-271KC is a 270 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 420 mA continuous current with a maximum DC resistance of 1.11 Ohm and operates across a temperature range of -30°C to 100°C. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. The CR75 series provides ferrite core construction with nonstandard packaging in a compact 7.80mm × 7.00mm footprint.

Substiute Parts

CR75-271KC

Sumida America Components Inc.In Stock: 1214CR75-271KC Datasheet

Current PartRFQ

CR75NP-271KC

Sumida America Components Inc.In Stock: 794CR75NP-271KC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CR75-271KC is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 270 µH
• Inductance tolerance: ±10%
• Current rating: 420 mA minimum
• DC resistance: 1.11 Ohm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded
• Self resonant frequency: 4.8 MHz
• Physical footprint: 7.80mm × 7.00mm × 5.50mm
• Mounting type: Surface Mount

The CR75NP-271KC qualifies as a direct substitute based on identical electrical specifications and mechanical dimensions. The primary distinction lies in product status and packaging configuration, with the CR75NP-271KC offered in active production status with Tape & Reel packaging and enhanced temperature range coverage.

Parameter Comparison

Engineering Selection Recommendations

CR75NP-271KC as Primary Substitute:

The CR75NP-271KC is the direct functional equivalent of the CR75-271KC. Both components share identical electrical specifications across inductance, current rating, DC resistance, and frequency characteristics. The CR75NP-271KC offers the following advantages for new designs and production transitions:

1. Active Product Status: The CR75NP-271KC maintains active manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete CR75-271KC.

2. Enhanced Compliance: The CR75NP-271KC achieves ROHS3 compliance, whereas the CR75-271KC is RoHS non-compliant. This distinction is critical for applications subject to regulatory requirements in regulated markets.

3. Extended Temperature Range: The CR75NP-271KC operates across -40°C to 100°C, providing 10°C additional low-temperature margin compared to the CR75-271KC (-30°C to 100°C).

4. Standard Packaging: The CR75NP-271KC is supplied in Tape & Reel format, facilitating automated assembly processes and reducing handling costs relative to nonstandard packaging.

All electrical and mechanical parameters remain equivalent, confirming direct pin-for-pin and functional compatibility in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can CR75NP-271KC be used as a direct replacement for CR75-271KC in existing designs?

A: Yes. The CR75NP-271KC is electrically and mechanically equivalent to the CR75-271KC. Both components deliver 270 µH inductance at 420 mA with 1.11 Ohm maximum DC resistance in identical physical packages. No circuit modifications are required.

Q: What is the significance of the product status difference between these parts?

A: The CR75-271KC is classified as obsolete, indicating discontinued manufacturing and limited availability. The CR75NP-271KC maintains active production status, ensuring reliable supply for current and future production runs. For new designs, the CR75NP-271KC is the recommended selection.

Q: How does the packaging difference affect component selection?

A: The CR75-271KC uses nonstandard packaging, while the CR75NP-271KC is supplied in Tape & Reel format. Tape & Reel packaging is compatible with standard pick-and-place assembly equipment, reducing manual handling and improving production efficiency. Both packages contain the same component.

Q: Are there compliance implications when substituting CR75NP-271KC for CR75-271KC?

A: Yes. The CR75NP-271KC is ROHS3 compliant, whereas the CR75-271KC is RoHS non-compliant. If your application or market requires RoHS compliance, the CR75NP-271KC satisfies this requirement. The CR75-271KC does not.

Q: Does the extended temperature range of CR75NP-271KC provide additional design margin?

A: The CR75NP-271KC operates from -40°C to 100°C, compared to -30°C to 100°C for the CR75-271KC. This provides an additional 10°C margin at the lower temperature extreme. For applications operating near -30°C, the CR75NP-271KC offers improved thermal headroom.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Both components are specified at 270 µH inductance with ±10% tolerance, 420 mA current rating, 1.11 Ohm maximum DC resistance, and 4.8 MHz self resonant frequency. Electrical performance is equivalent across all provided specifications.