CD54NP-820KC Equivalent & Substitute Parts

Part Overview

The CD54NP-820KC is a 82 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This component is rated for 580 mA continuous current with a maximum DC resistance of 600 mOhm and operates across the temperature range of -40°C to 100°C. The part is classified as Active 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 product category.

Key Parameters

Parameter	Value	Specification Type
Inductance	82 µH	Primary Electrical
Inductance Tolerance	±10%	Tolerance
Current Rating	580 mA	Primary Electrical
DC Resistance (DCR)	600 mOhm Max	Primary Electrical
Shielding	Unshielded	Mechanical
Core Material	Ferrite	Material
Mounting Type	Surface Mount	Mechanical
Operating Temperature Range	-40°C ~ 100°C	Environmental
RoHS Status	ROHS3 Compliant	Compliance
Moisture Sensitivity Level	1 (Unlimited)	Environmental

Substitute Part Grouping Explanation

Substitution of the CD54NP-820KC is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Inductance value: 82 µH (within ±10% tolerance)
Current rating: minimum 580 mA
DC resistance: maximum 600 mOhm
Unshielded configuration
Ferrite core material

Mechanical Compatibility Requirements:

Surface mount packaging
Nonstandard package case
Physical dimensions compatible with board layout
Height within acceptable seated limits

Compliance Requirements:

RoHS3 compliant status
Moisture sensitivity level 1 or better
Active product status

The SDR0604-820KL from Bourns Inc. meets all substitution criteria through equivalent electrical specifications and compatible mechanical form factor.

Parameter Comparison

Parameter	CD54NP-820KC (Sumida)	SDR0604-820KL (Bourns)	Compatibility
Inductance	82 µH	82 µH	Equivalent
Inductance Tolerance	±10%	±10%	Equivalent
Current Rating (Amps)	580 mA	580 mA	Equivalent
DC Resistance (DCR)	600 mOhm Max	600 mOhm Max	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature Range	-40°C ~ 100°C	-40°C ~ 125°C	Compatible (Substitute has extended range)
Package / Case	Nonstandard	Nonstandard	Equivalent
Size / Dimension (L x W)	0.228" x 0.205" (5.80mm x 5.20mm)	0.228" x 0.228" (5.80mm x 5.80mm)	Compatible (Width difference 0.023" / 0.60mm)
Height - Seated (Max)	0.191" (4.85mm)	0.189" (4.80mm)	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

CD54NP-820KC (Primary Part):

Recommended for applications where the original design specification is maintained
Active product status with established supply chain
Operates within -40°C to 100°C temperature range
RoHS3 compliant with MSL 1 rating

SDR0604-820KL (Substitute Part):

Direct electrical equivalent with identical inductance, current rating, and DC resistance specifications
Extended operating temperature range (-40°C to 125°C) provides additional thermal margin
Active product status with higher inventory availability
RoHS3 compliant with MSL 1 rating
Mechanical dimensions are compatible with minor width variance (0.023" / 0.60mm)
Suitable for applications requiring enhanced temperature performance or where supply continuity is prioritized

Both parts satisfy the core electrical and mechanical requirements for 82 µH unshielded inductor applications at 580 mA current rating with 600 mOhm maximum DC resistance.

Frequently Asked Questions (FAQ)

Q: What makes SDR0604-820KL a valid substitute for CD54NP-820KC?

A: The SDR0604-820KL maintains electrical equivalence across all critical parameters: 82 µH inductance, 580 mA current rating, 600 mOhm maximum DC resistance, unshielded ferrite core configuration, and surface mount packaging. Both parts are RoHS3 compliant with MSL 1 rating and active product status.

Q: Are there dimensional differences between these parts?

A: Yes. The CD54NP-820KC measures 0.228" L x 0.205" W (5.80mm x 5.20mm), while the SDR0604-820KL measures 0.228" L x 0.228" W (5.80mm x 5.80mm). The width difference is 0.023" (0.60mm). Height specifications are compatible: 0.191" (4.85mm) versus 0.189" (4.80mm). Board layout must accommodate the slightly larger width of the substitute part.

Q: What is the temperature operating range difference?

A: The CD54NP-820KC operates from -40°C to 100°C, while the SDR0604-820KL operates from -40°C to 125°C. The substitute part provides an extended upper temperature limit of 25°C, which may be beneficial for applications in elevated thermal environments.

Q: Are both parts available in the same packaging format?

A: No. The CD54NP-820KC is supplied in Tape & Reel (TR) packaging, while the SDR0604-820KL is supplied in Cut Tape (CT) & Digi-Reel® packaging. Procurement and handling procedures may differ accordingly.

Q: Can I use SDR0604-820KL as a direct drop-in replacement?

A: Electrical substitution is direct. Mechanical substitution requires verification that the 0.023" (0.60mm) width increase does not conflict with board layout constraints or adjacent component placement.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are classified under ECCN EAR99 with HTSUS code 8504.50.4000.

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