CR75-331KC Equivalent & Substitute Parts

Part Overview

The CR75-331KC is a 330 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 400 mA with a maximum DC resistance of 1.26Ohm. This surface mount component operates across a temperature range of -30°C to 100°C and is designed for nonstandard package applications. The CR75-331KC is currently classified as obsolete, making identification of suitable substitute components essential for ongoing production and design continuity. The CR75NP-331KC represents the active production equivalent with enhanced specifications and improved compliance status.

Substiute Parts

CR75-331KC

Sumida America Components Inc.In Stock: 782CR75-331KC Datasheet

Current PartRFQ

CR75NP-331KC

Sumida America Components Inc.In Stock: 912CR75NP-331KC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CR75-331KC is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 330 µH ±10%
• Current rating: 400 mA minimum
• DC resistance: 1.26Ohm maximum
• Core type: Ferrite drum core, unshielded
• Mounting: Surface mount configuration
• Physical footprint: 7.80mm x 7.00mm x 5.50mm maximum height
• Self-resonant frequency: 4.3MHz

The CR75NP-331KC qualifies as a direct substitute based on identical electrical specifications and physical dimensions. This part maintains all critical performance parameters while offering improved product status (active vs. obsolete) and enhanced regulatory compliance. The packaging difference (Tape & Reel vs. standard) does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

CR75NP-331KC as Primary Substitute:

The CR75NP-331KC is the recommended substitute for the obsolete CR75-331KC. This part maintains complete electrical and mechanical equivalence while offering superior product lifecycle status. The CR75NP-331KC is in active production, ensuring long-term availability and supply chain stability. The extended operating temperature range (-40°C vs. -30°C minimum) provides additional thermal margin for demanding applications.

Regulatory compliance is significantly improved with the CR75NP-331KC, which achieves ROHS3 compliance compared to the non-compliant status of the original CR75-331KC. This compliance status is critical for applications subject to environmental regulations and customer requirements.

Packaging format (Tape & Reel) does not affect electrical performance or mechanical fit. The higher inventory level (822 Pcs vs. 731 Pcs) of the CR75NP-331KC indicates stronger market availability.

Frequently Asked Questions (FAQ)

Q: Can CR75NP-331KC be used as a direct replacement for CR75-331KC in existing designs?

A: Yes. The CR75NP-331KC is electrically and mechanically equivalent to the CR75-331KC. All critical parameters including inductance, current rating, DC resistance, physical dimensions, and self-resonant frequency are identical. The part can be substituted without circuit redesign or PCB modification.

Q: What is the difference between CR75-331KC and CR75NP-331KC?

A: The primary differences are product status and regulatory compliance. The CR75-331KC is obsolete, while CR75NP-331KC is in active production. The CR75NP-331KC achieves ROHS3 compliance and offers an extended minimum operating temperature of -40°C compared to -30°C. Packaging is supplied as Tape & Reel for the CR75NP-331KC.

Q: Are there any performance differences between these parts?

A: No. Both parts share identical electrical specifications: 330 µH inductance, 400 mA current rating, 1.26Ohm maximum DC resistance, and 4.3MHz self-resonant frequency. The CR75NP-331KC provides a wider operating temperature range, which may be beneficial in extreme temperature environments.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level. These components have unlimited shelf life under normal storage conditions and do not require special moisture control during handling or storage.

Q: Is the Tape & Reel packaging compatible with automated assembly equipment?

A: Yes. Tape & Reel packaging is the standard format for automated surface mount assembly. This packaging format is compatible with standard pick-and-place equipment and reflow soldering processes.

Q: Why is the CR75-331KC listed as obsolete?

A: The CR75-331KC has been superseded by the CR75NP-331KC in the manufacturer's product line. The newer part offers improved compliance and extended temperature range while maintaining full electrical and mechanical compatibility.