CD54NP-221KC Equivalent & Substitute Parts

Part Overview

The CD54NP-221KC is a 220 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This component is designed for applications requiring fixed inductance with a 350 mA current rating and 1.57 Ohm maximum DC resistance. The part operates across the temperature range of -40°C to 100°C and is classified as Active product status. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options for applications where the original part number may be unavailable or where design requirements permit functional substitution.

Key Parameters

Parameter	Value
Inductance	220 µH
Tolerance	±10%
Current Rating	350 mA
DC Resistance (DCR)	1.57 Ohm Max
Shielding	Unshielded
Material - Core	Ferrite
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 100°C
Package / Case	Nonstandard
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD54NP-221KC is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

Inductance value: 220 µH
Inductance tolerance: ±10%
Current rating: 350 mA minimum
DC resistance: 1.57 Ohm maximum
Core material: Ferrite
Shielding configuration: Unshielded
Mounting type: Surface Mount
Package classification: Nonstandard
Inductance test frequency: 1 kHz

Compliance Requirements:

RoHS3 compliance mandatory
Moisture Sensitivity Level 1 (Unlimited)

The SDR0604-221KL from Bourns Inc. meets all critical electrical parameters and compliance requirements, establishing it as a direct functional equivalent for the CD54NP-221KC.

Parameter Comparison

Parameter	CD54NP-221KC (Sumida)	SDR0604-221KL (Bourns)	Match Status
Inductance	220 µH	220 µH	Equivalent
Tolerance	±10%	±10%	Equivalent
Current Rating (Amps)	350 mA	350 mA	Equivalent
DC Resistance (DCR)	1.57 Ohm Max	1.57 Ohm Max	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Material - Core	Ferrite	Ferrite	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature	-40°C ~ 100°C	-40°C ~ 125°C	Compatible
Package / Case	Nonstandard	Nonstandard	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Inductance Frequency - Test	1 kHz	1 kHz	Equivalent

Engineering Selection Recommendations

CD54NP-221KC (Sumida America Components Inc.)

Primary selection for applications where Sumida component qualification is specified. Active product status with 950 pieces in stock. ROHS3 compliant with unlimited moisture sensitivity rating. Operating temperature range -40°C to 100°C. Suitable for standard industrial and commercial applications within specified temperature limits.

SDR0604-221KL (Bourns Inc.)

Direct functional equivalent with extended operating temperature range to 125°C. Active product status with 1333 pieces in stock. ROHS3 compliant with unlimited moisture sensitivity rating and REACH unaffected status. Selection appropriate for applications requiring higher temperature operation or where Bourns component qualification is specified. Identical electrical performance across all critical parameters.

Both parts satisfy identical electrical and mechanical requirements. Selection between them is determined by manufacturer qualification requirements, supply chain preferences, or application-specific temperature operating range needs.

Frequently Asked Questions (FAQ)

Q: Can SDR0604-221KL replace CD54NP-221KC in all applications?

A: Yes, for applications operating within the -40°C to 100°C temperature range. The SDR0604-221KL provides identical inductance, current rating, DC resistance, and core material specifications. The extended temperature rating of the Bourns part (to 125°C) provides additional operational margin but does not affect compatibility within the original operating range.

Q: Are the physical dimensions identical between these parts?

A: The parts have similar but not identical dimensions. CD54NP-221KC measures 0.228" L x 0.205" W x 0.191" H (5.80mm x 5.20mm x 4.85mm). SDR0604-221KL measures 0.228" L x 0.228" W x 0.189" H (5.80mm x 5.80mm x 4.80mm). Both are classified as Nonstandard package. Physical layout verification is required during PCB design transition.

Q: What compliance certifications apply to both parts?

A: Both CD54NP-221KC and SDR0604-221KL are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both carry ECCN classification EAR99 and HTSUS code 8504.50.4000. The SDR0604-221KL additionally carries REACH Unaffected status.

Q: Are there differences in electrical performance beyond the specified parameters?

A: The SDR0604-221KL provides additional measured parameters: Current Saturation (Isat) of 440 mA, Q factor of 20 at 796 kHz, and Self Resonant Frequency of 6 MHz. These parameters are not specified for the CD54NP-221KC but do not affect substitution compatibility for applications designed to the core electrical specifications.

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

A: Both parts use 1 kHz as the inductance frequency test standard, ensuring measurement consistency and direct parameter comparison.

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