CD54NP-151KC Equivalent & Substitute Parts

Part Overview

The CD54NP-151KC is a 150 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This component is rated for 400 mA continuous current with a maximum DC resistance of 1.1 Ohm 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.

Key Parameters

Parameter	Value	Unit
Inductance	150	µH
Inductance Tolerance	±10	%
Current Rating	400	mA
DC Resistance (Max)	1.1	Ohm
Shielding Type	Unshielded	—
Core Material	Ferrite	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40°C to 100°C	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD54NP-151KC is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

Inductance value: 150 µH at ±10% tolerance
Current rating: 400 mA minimum
DC resistance: 1.1 Ohm maximum
Core material: Ferrite
Shielding configuration: Unshielded
Mounting type: Surface Mount
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: MSL 1

The substitute part SDR0604-151KL meets all critical electrical specifications. Physical dimensions show minor variations within acceptable mechanical tolerances for PCB assembly. Both parts are classified as Active status and maintain equivalent environmental compliance certifications.

Parameter Comparison

Parameter	CD54NP-151KC (Sumida)	SDR0604-151KL (Bourns)	Match Status
Inductance	150 µH	150 µH	Equivalent
Inductance Tolerance	±10%	±10%	Equivalent
Current Rating	400 mA	400 mA	Equivalent
DC Resistance (Max)	1.1 Ohm	1.1 Ohm	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature Range	-40°C to 100°C	-40°C to 125°C	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Equivalent
Product Status	Active	Active	Equivalent
Length x Width	5.80mm x 5.20mm	5.80mm x 5.80mm	Compatible
Height (Seated Max)	4.85mm	4.80mm	Compatible

Engineering Selection Recommendations

The SDR0604-151KL from Bourns Inc. is a direct electrical equivalent to the CD54NP-151KC. Both components maintain identical inductance, current rating, and DC resistance specifications. Both parts are Active status products with ROHS3 compliance and MSL 1 moisture sensitivity ratings, confirming suitability for equivalent application contexts.

The SDR0604-151KL provides an extended operating temperature range of -40°C to 125°C compared to the CD54NP-151KC range of -40°C to 100°C. This extended range does not restrict substitution in applications requiring the base temperature specification of -40°C to 100°C.

Physical dimensions are compatible for standard PCB assembly processes. The width dimension of the SDR0604-151KL (5.80mm) is marginally larger than the CD54NP-151KC (5.20mm), while length and height dimensions remain within acceptable mechanical tolerances for surface mount placement.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for substitution of the CD54NP-151KC?

A: The inductance value (150 µH at ±10% tolerance), current rating (400 mA), DC resistance (1.1 Ohm maximum), core material (ferrite), and shielding configuration (unshielded) must remain equivalent. These parameters define the functional performance of the inductor in circuit applications.

Q: Is the SDR0604-151KL mechanically compatible with PCB layouts designed for the CD54NP-151KC?

A: The SDR0604-151KL is mechanically compatible. Both components are surface mount inductors with nonstandard package dimensions. The SDR0604-151KL width dimension (5.80mm) is 0.60mm larger than the CD54NP-151KC (5.20mm). Length and height dimensions are equivalent within manufacturing tolerances. PCB layout verification is required for specific footprint constraints.

Q: Does the extended temperature range of the SDR0604-151KL affect substitution suitability?

A: No. The SDR0604-151KL operating range of -40°C to 125°C encompasses the CD54NP-151KC range of -40°C to 100°C. Extended temperature capability does not restrict substitution in applications operating within the base temperature specification.

Q: Are both parts RoHS compliant?

A: Yes. Both the CD54NP-151KC and SDR0604-151KL are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, confirming equivalent environmental compliance for regulated applications.

Q: What is the difference between the CD54 and SDR0604 series designations?

A: CD54 is the Sumida America Components Inc. series designation, while SDR0604 is the Bourns Inc. series designation. Series designations identify manufacturer product lines but do not affect electrical equivalence when individual part specifications match.

Q: Can the SDR0604-151KL be used as a direct replacement without circuit redesign?

A: Yes, for applications within the specified electrical and thermal operating parameters. The SDR0604-151KL maintains equivalent inductance, current rating, and DC resistance. PCB layout verification is required to confirm mechanical fit within existing footprint constraints.

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