CDRH3D23NP-3R3PC Equivalent & Substitute Parts

Part Overview

The CDRH3D23NP-3R3PC is a 3.3 µH shielded inductor manufactured by Sumida America Components Inc., designed for surface mount applications requiring fixed inductance in compact form factors. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within specified tolerance ranges, enabling procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Inductance	3.3	µH
Current Rating	2.2	A
DC Resistance (DCR) Max	56.3	mOhm
Saturation Current (Isat)	1.45	A
Shielding	Shielded	—
Core Material	Ferrite	—
Operating Temperature Range	-40 to 105	°C
Mounting Type	Surface Mount	—
Package Size	3.80 x 3.80 x 2.50	mm
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the CDRH3D23NP-3R3PC is determined by the following critical parameters:

Primary Electrical Criteria:

Inductance value: 3.3 µH (tolerance range ±25% to ±30% acceptable)
Current rating: minimum 1.95 A (substitute must support circuit current demands)
DC resistance: maximum 65 mOhm (within acceptable loss parameters)
Saturation current: minimum 1.45 A (substitute must prevent core saturation)
Shielding: Shielded configuration required
Core material: Ferrite

Secondary Criteria:

Surface mount mounting type
Operating temperature range: -40°C minimum, 105°C minimum upper limit
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

The substitute part SRR4018-3R3Y meets these criteria with equivalent inductance, compatible current ratings, acceptable DCR variance, and matching environmental specifications.

Parameter Comparison

Parameter	CDRH3D23NP-3R3PC (Main)	SRR4018-3R3Y (Substitute)	Compatibility
Manufacturer	Sumida America Components Inc.	Bourns Inc.	Different manufacturer
Inductance	3.3 µH	3.3 µH	Equivalent
Inductance Tolerance	±25%	±30%	Substitute tolerance wider
Current Rating	2.2 A	1.95 A	Substitute rated lower
Saturation Current (Isat)	1.45 A	1.8 A	Substitute rated higher
DC Resistance Max	56.3 mOhm	65 mOhm	Substitute higher by 8.7 mOhm
Shielding	Shielded	Shielded	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Core Type	Standard	Drum Core, Wirewound	Different construction
Operating Temperature	-40 to 105°C	-40 to 125°C	Substitute range wider
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Size (L x W x H)	3.80 x 3.80 x 2.50 mm	4.80 x 4.80 x 2.00 mm	Substitute larger footprint
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent
ECCN	EAR99	EAR99	Equivalent

Engineering Selection Recommendations

Primary Part Selection (CDRH3D23NP-3R3PC): Select the main part when PCB layout constraints require the smaller 3.80 x 3.80 mm footprint and when the 2.2 A current rating is required. This part maintains Active product status with established supply availability (2933 pcs in stock).

Substitute Part Selection (SRR4018-3R3Y): The SRR4018-3R3Y is suitable as a substitute when:

PCB layout accommodates the larger 4.80 x 4.80 mm footprint
Circuit current demand does not exceed 1.95 A
Higher operating temperature capability (up to 125°C) provides design margin
DC resistance increase of 8.7 mOhm is acceptable within circuit loss budget

Both parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification. Both are Active status products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can SRR4018-3R3Y replace CDRH3D23NP-3R3PC in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 1.95 A and PCB layout accommodates the larger 4.80 x 4.80 mm footprint. The 8.7 mOhm increase in DC resistance must be evaluated against circuit loss specifications.

Q: What is the impact of the different core construction (standard vs. drum core wirewound)?

A: Both configurations use ferrite core material and provide shielded inductance at 3.3 µH. The drum core wirewound construction in the substitute part provides higher saturation current (1.8 A vs. 1.45 A), which may improve performance in circuits approaching saturation limits.

Q: Are there package compatibility issues?

A: Yes. The substitute part has a larger footprint (4.80 x 4.80 mm vs. 3.80 x 3.80 mm) and lower height (2.00 mm vs. 2.50 mm). PCB layout and clearance verification is required before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, carry MSL Level 1 rating, and are classified as EAR99 for export purposes. Both maintain Active product status.

Q: What is the tolerance impact of using the substitute part?

A: The substitute part has ±30% inductance tolerance compared to ±25% for the main part. This wider tolerance must be acceptable within circuit design specifications.

Q: How does the operating temperature range affect selection?

A: The substitute part supports -40°C to 125°C, providing 20°C additional upper temperature margin compared to the main part (-40°C to 105°C). This may be advantageous in high-temperature applications.

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