CD54NP-121KC Equivalent & Substitute Parts

Part Overview

The CD54NP-121KC is a 120 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This component is rated for 480 mA continuous current with a maximum DC resistance of 930 mOhm and operates across the temperature range of -40°C to 100°C. The part is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this inductor category.

Substiute Parts

CD54NP-121KC

Sumida America Components Inc.In Stock: 867CD54NP-121KC Datasheet

Current PartRFQ

SDR0604-121KL

Bourns Inc.In Stock: 6192SDR0604-121KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD54NP-121KC is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Inductance value: 120 µH at 1 kHz test frequency
• Inductance tolerance: ±10%
• Current rating: 480 mA minimum
• DC resistance: 930 mOhm maximum

Mechanical Equivalence Requirements:

• Mounting type: Surface Mount
• Shielding configuration: Unshielded
• Package classification: Nonstandard

Compliance Requirements:

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

The substitute part SDR0604-121KL meets all electrical and mechanical equivalence criteria. Both parts share identical inductance, tolerance, current rating, and DC resistance specifications. Both are unshielded surface mount inductors with RoHS3 compliance and MSL Level 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Both the CD54NP-121KC and SDR0604-121KL are Active product status components with full RoHS3 compliance and MSL Level 1 rating, confirming suitability for standard manufacturing and storage environments without moisture control requirements.

The CD54NP-121KC (Sumida) operates to 100°C maximum. The SDR0604-121KL (Bourns) extends the upper operating temperature to 125°C, providing additional thermal margin in applications approaching the 100°C threshold.

Both parts are electrically and mechanically equivalent across all specified parameters. Selection between these parts depends on availability, lead time, and thermal operating requirements of the specific application. The Bourns SDR0604-121KL offers extended temperature capability without compromising any other electrical or mechanical specification.

Frequently Asked Questions (FAQ)

Q: Can SDR0604-121KL replace CD54NP-121KC in all applications?

A: Yes, within the electrical and mechanical specifications provided. Both parts share identical inductance (120 µH ±10%), current rating (480 mA), DC resistance (930 mOhm max), and mounting configuration (unshielded surface mount). The Bourns part extends the upper operating temperature from 100°C to 125°C, which is compatible with all applications designed for the Sumida part.

Q: Are there physical size differences between these parts?

A: The CD54NP-121KC measures 0.228" L x 0.205" W x 0.191" H (5.80mm x 5.20mm x 4.85mm). The SDR0604-121KL measures 0.228" L x 0.228" W x 0.189" H (5.80mm x 5.80mm x 4.80mm). The length and height are equivalent; the width differs by 0.023" (0.60mm). Verify PCB layout compatibility before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the CD54NP-121KC and SDR0604-121KL are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both carry EAR99 ECCN classification and HTSUS code 8504.50.4000.

Q: What is the inductance test frequency for these parts?

A: Both parts are specified at 1 kHz inductance test frequency.

Q: Are these parts suitable for lead-free soldering processes?

A: Both parts are RoHS3 compliant and MSL Level 1, confirming compatibility with standard lead-free soldering processes without special moisture bake-out requirements.