CD54NP-680KC Equivalent & Substitute Parts

Part Overview

The CD54NP-680KC is a 68 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This component is rated for 610 mA continuous current with a maximum DC resistance of 460mOhm and operates across the temperature range of -40°C to 100°C. The part is Active in product status and RoHS3 compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors.

Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

CD54NP-680KC

Sumida America Components Inc.In Stock: 1012CD54NP-680KC Datasheet

Current PartRFQ

SDR0604-680KL

Bourns Inc.In Stock: 10245SDR0604-680KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD54NP-680KC is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value of 68 µH with ±10% tolerance
• Current rating minimum of 610 mA
• DC resistance not exceeding 460mOhm maximum
• Unshielded ferrite core construction
• Surface mount configuration

Mechanical Compatibility Criteria:

• Nonstandard package form factor
• Physical dimensions compatible with 0.228" L x 0.205" W footprint
• Height seated maximum of 0.191"
• Tape & Reel packaging format

Compliance Requirements:

• RoHS3 compliance mandatory
• Moisture Sensitivity Level 1 (Unlimited)

The substitute part SDR0604-680KL from Bourns Inc. meets these substitution criteria through equivalent inductance specification, compatible current rating, acceptable DC resistance characteristics, and matching compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: CD54NP-680KC

The CD54NP-680KC remains the primary selection when Sumida supply is available. This part is Active in product status with 977 pieces in current inventory. Full RoHS3 compliance and MSL 1 rating support deployment in standard manufacturing environments.

Substitute Part: SDR0604-680KL

The SDR0604-680KL from Bourns Inc. is qualified as a direct substitute when CD54NP-680KC availability is constrained. This part demonstrates:

• Active product status with 10,200 pieces in inventory
• Equivalent inductance and tolerance specifications
• Current rating of 620 mA exceeds the 610 mA requirement
• DC resistance of 520 mOhm maximum remains within acceptable circuit parameters
• Extended operating temperature range to 125°C provides additional thermal margin
• Full RoHS3 compliance and MSL 1 rating
• Identical packaging format and mounting configuration

Both parts carry EAR99 ECCN classification and 8504.50.4000 HTSUS code, confirming regulatory alignment for procurement and logistics purposes.

Frequently Asked Questions (FAQ)

Q: What makes SDR0604-680KL a valid substitute for CD54NP-680KC?

A: The SDR0604-680KL meets all critical electrical parameters: 68 µH inductance with ±10% tolerance, 620 mA current rating (exceeding the 610 mA requirement), and 520 mOhm maximum DC resistance (within acceptable limits). Both parts are unshielded ferrite core inductors in nonstandard surface mount packages with identical RoHS3 compliance and MSL 1 ratings.

Q: Are there dimensional differences between these parts?

A: Both parts share the same length of 0.228" (5.80mm). The Bourns SDR0604-680KL has a width of 0.228" (5.80mm) compared to 0.205" (5.20mm) for the Sumida CD54NP-680KC. Heights are comparable at 0.189" (4.80mm) versus 0.191" (4.85mm). Verify PCB layout clearances before substitution.

Q: What is the difference in DC resistance between these inductors?

A: The CD54NP-680KC specifies 460 mOhm maximum DCR, while the SDR0604-680KL specifies 520 mOhm maximum. This 60 mOhm difference is acceptable in most circuit applications. Verify power dissipation requirements at 610 mA operating current for your specific application.

Q: Do both parts support the same operating temperature range?

A: The CD54NP-680KC operates from -40°C to 100°C, while the SDR0604-680KL extends to -40°C to 125°C. The Bourns part provides additional thermal margin and is suitable for applications requiring higher temperature operation.

Q: Are packaging and handling requirements identical?

A: Both parts are supplied in Tape & Reel (TR) format with MSL 1 (Unlimited) moisture sensitivity rating. Standard SMD handling procedures apply to both components. No special moisture baking or storage conditions are required.

Q: Can I use SDR0604-680KL in existing designs qualified for CD54NP-680KC?

A: Substitution is permissible when electrical parameters (inductance, current rating, DCR) and compliance requirements (RoHS3, MSL 1) are verified against your circuit design specifications. Dimensional differences require PCB layout confirmation.