CDR95NP-2R2MC Equivalent & Substitute Parts

Part Overview

The CDR95NP-2R2MC is a 2.2 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 7 A continuous current with a maximum DC resistance of 11.3 mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substitute parts must maintain the same inductance value (2.2 µH), tolerance (±20%), unshielded configuration, and surface mount packaging while accommodating variations in current rating, DC resistance, and operating temperature ranges within acceptable engineering limits.

Key Parameters

Parameter	CDR95NP-2R2MC	Unit
Inductance	2.2	µH
Tolerance	±20%	-
Current Rating (Continuous)	7	A
Current - Saturation (Isat)	9.4	A
DC Resistance (DCR) Max	11.3	mOhm
Type	Drum Core, Wirewound	-
Shielding	Unshielded	-
Mounting Type	Surface Mount	-
Operating Temperature Range	-40°C to 100°C	-
RoHS Status	ROHS3 Compliant	-
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitution eligibility for the CDR95NP-2R2MC is determined by the following mandatory parameters:

Core Substitution Criteria:

Inductance value: 2.2 µH (fixed requirement)
Tolerance: ±20% (fixed requirement)
Shielding: Unshielded (fixed requirement)
Mounting type: Surface Mount (fixed requirement)
Core material: Ferrite drum core or wirewound construction

Allowable Variation Parameters:

Current Rating: Minimum 6.1 A (acceptable for designs with margin); 7 A or higher preferred for direct replacement
DC Resistance (DCR): 6.8 mOhm to 15 mOhm (variations acceptable based on thermal and power dissipation requirements)
Operating Temperature: Minimum -40°C to 85°C; extended ranges (-55°C to 150°C) acceptable for enhanced reliability
Saturation Current (Isat): 6.1 A minimum; higher values provide additional design margin
Product Status: Active status preferred for long-term availability; obsolete parts acceptable only for legacy support

Packaging Consideration: All substitute parts are supplied in Tape & Reel (TR) packaging, compatible with automated assembly processes. The main part specifies nonstandard packaging; substitutes maintain equivalent form factors within dimensional tolerances.

Parameter Comparison

Parameter	CDR95NP-2R2MC	SDR1005-2R2ML	B82476B1222M100	P0751.222NLT	SDR1806-2R2ML	UP2-2R2-R	UP2B-2R2-R	Unit
Inductance	2.2	2.2	2.2	2.2	2.2	2.2	2.2	µH
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	-
Current Rating	7	6.1	6.7	6.1	9	6.9	7.2	A
Isat	9.4	7	7	7	22	6.1	6.1	A
DCR Max	11.3	12	10.5	15	6.8	11.5	10.7	mOhm
Type	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound	-
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	-
Operating Temperature	-40 to 100	-40 to 125	-55 to 150	-40 to 130	-40 to 125	-	-40 to 85	°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	-
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	-

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SDR1005-2R2ML (Bourns Inc.) – Active product with current rating of 6.1 A and DCR of 12 mOhm. Suitable for applications where the design current does not exceed 6.1 A. Operating temperature range extends to 125°C, providing enhanced thermal margin. ROHS3 compliant with REACH unaffected status ensures regulatory compliance for global markets.

UP2B-2R2-R (Eaton - Electronics Division) – Active product with current rating of 7.2 A, matching the original part's 7 A specification. DCR of 10.7 mOhm is within acceptable range. Drum core construction maintains electromagnetic performance characteristics. Operating temperature limited to -40°C to 85°C; suitable for standard industrial applications.

Secondary Substitutes (Acceptable with Design Verification):

B82476B1222M100 (EPCOS - TDK Electronics) – Active product with current rating of 6.7 A and DCR of 10.5 mOhm. Extended operating temperature range (-55°C to 150°C) and AEC-Q200 automotive qualification provide enhanced reliability for demanding environments. Dimensional compatibility confirmed.

SDR1806-2R2ML (Bourns Inc.) – Active product with superior current rating of 9 A and lowest DCR of 6.8 mOhm. Saturation current of 22 A provides significant design margin. Larger package footprint (18.30mm x 14.00mm) requires PCB layout verification. Recommended for high-current applications or designs requiring minimal power dissipation.

Tertiary Substitutes (Limited Application):

P0751.222NLT (Pulse Electronics) – Active product with current rating of 6.1 A but elevated DCR of 15 mOhm. Acceptable only for low-power applications where thermal dissipation is not critical. Operating temperature range of -40°C to 130°C supports extended thermal environments.

UP2-2R2-R (Eaton - Electronics Division) – Active product with current rating of 6.9 A and DCR of 11.5 mOhm. Operating temperature range not specified in documentation; requires clarification before selection. Wirewound construction without specified core material.

Selection Priority:

For direct replacement: UP2B-2R2-R (matched current rating, active status)
For thermal optimization: SDR1806-2R2ML (lowest DCR, highest current margin)
For extended temperature: B82476B1222M100 (automotive qualification, wide temperature range)
For cost optimization: SDR1005-2R2ML (active status, established supply chain)

Frequently Asked Questions (FAQ)

Q: Can SDR1005-2R2ML replace CDR95NP-2R2MC in a 7 A application?

A: SDR1005-2R2ML has a current rating of 6.1 A, which is below the original 7 A specification. Substitution is acceptable only if the actual circuit current does not exceed 6.1 A or if design margin permits operation at reduced current rating. Verify actual load current before implementation.

Q: What is the significance of DCR variation between substitute parts?

A: DC Resistance directly affects power dissipation (P = I²R). The original part specifies 11.3 mOhm maximum. Substitutes range from 6.8 mOhm (SDR1806-2R2ML) to 15 mOhm (P0751.222NLT). Lower DCR reduces heat generation; higher DCR increases thermal load. Select based on thermal budget and cooling capability of the application.

Q: Why does SDR1806-2R2ML have a larger package than the original part?

A: SDR1806-2R2ML is rated for 9 A continuous current with 6.8 mOhm DCR, requiring larger core geometry to handle increased current without saturation. Package dimensions are 18.30mm x 14.00mm versus 12.90mm x 9.40mm for the original. PCB layout must accommodate the larger footprint; this part is suitable for applications where space permits.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry either ROHS3 Compliant or RoHS Compliant certification. SDR1005-2R2ML, B82476B1222M100, P0751.222NLT, and SDR1806-2R2ML explicitly state ROHS3 compliance. UP2-2R2-R and UP2B-2R2-R carry RoHS Compliant status. All parts meet environmental regulatory requirements for EU and global markets.

Q: What is the difference between drum core and wirewound construction?

A: Drum core inductors use a ferrite core with wire wound around it, providing defined inductance and saturation characteristics. Wirewound inductors (without specified core material) may use air core or alternative materials. For this application, drum core construction (CDR95NP-2R2MC, SDR1005-2R2ML, B82476B1222M100, SDR1806-2R2ML, UP2B-2R2-R) is preferred for consistent performance. Wirewound alternatives (P0751.222NLT, UP2-2R2-R) are acceptable if core material and performance are verified.

Q: Can I use B82476B1222M100 in automotive applications?

A: Yes. B82476B1222M100 carries AEC-Q200 automotive qualification and operates across -55°C to 150°C, meeting automotive temperature and reliability standards. This part is suitable for automotive and industrial applications requiring enhanced qualification.

Q: What is the impact of operating temperature range on part selection?

A: The original CDR95NP-2R2MC operates from -40°C to 100°C. Substitute parts offer extended ranges: SDR1005-2R2ML and SDR1806-2R2ML extend to 125°C; B82476B1222M100 extends to 150°C; P0751.222NLT extends to 130°C. Select based on application environment. Extended temperature ranges provide margin for thermal stress but do not affect electrical performance within specified limits.

Q: Is Tape & Reel packaging compatible with my assembly process?

A: All substitute parts are supplied in Tape & Reel (TR) packaging, standard for automated surface mount assembly. This packaging is compatible with pick-and-place equipment and reflow soldering processes. Verify reel specifications (quantity per reel, tape pitch) with supplier documentation if custom feeder configuration is required.

Q: Which substitute offers the best overall compatibility?

A: UP2B-2R2-R provides the closest match to CDR95NP-2R2MC: current rating of 7.2 A (exceeds 7 A specification), DCR of 10.7 mOhm (within acceptable range), drum core construction, and active product status. Operating temperature range of -40°C to 85°C covers standard industrial applications. This part is recommended as the primary substitute for direct replacement scenarios.

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