CDRR75NP-4R7MC Equivalent & Substitute Parts

Part Overview

The CDRR75NP-4R7MC is a 4.7 µH shielded inductor manufactured by Sumida America Components Inc., designed for surface mount applications requiring fixed inductance with moderate current handling. This component is rated for 2.8 A continuous current with a maximum DC resistance of 39 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design requirements necessitate alternative electrical or mechanical characteristics within acceptable tolerance ranges for the application.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Inductance	4.7	µH	Core electrical specification; must match exactly
Inductance Tolerance	±20%	%	Acceptable variation range for circuit operation
Current Rating (Continuous)	2.8	A	Thermal and saturation performance requirement
DC Resistance (DCR)	39	mOhm Max	Power loss and thermal dissipation factor
Shielding	Shielded	—	Electromagnetic interference containment
Mounting Type	Surface Mount	—	PCB assembly compatibility
Operating Temperature Range	-40°C to 125°C	°C	Environmental and thermal stress limits
Package Type	Nonstandard	—	Physical footprint and height constraints
RoHS Compliance	ROHS3 Compliant	—	Regulatory and environmental requirement

Substitute Part Grouping Explanation

Substitute parts for the CDRR75NP-4R7MC are qualified based on the following criteria:

Electrical Equivalence Requirements:

Inductance value of 4.7 µH at 100 kHz test frequency
Inductance tolerance of ±20%
Shielded construction for EMI containment
Current rating sufficient for 2.8 A continuous operation
DC resistance within acceptable limits for thermal performance

Mechanical Compatibility Requirements:

Surface mount packaging format
Nonstandard package dimensions compatible with PCB layout
Tape & Reel (TR) packaging for automated assembly

Compliance & Environmental Requirements:

RoHS3 compliance
MSL 1 (Unlimited) moisture sensitivity rating
Operating temperature range supporting -40°C to 125°C minimum

Saturation Performance: Substitute parts must maintain saturation current (Isat) at or above the application's peak current demands to prevent inductor core saturation and loss of inductance.

Parameter Comparison

Parameter	CDRR75NP-4R7MC (Main)	B82472G6472M000 (Substitute)	DRA73-4R7-R (Substitute)
Manufacturer	Sumida America Components Inc.	EPCOS - TDK Electronics	Eaton - Electronics Division
Inductance	4.7 µH	4.7 µH	4.7 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating	2.8 A	2.5 A	2.92 A
Current - Saturation (Isat)	2.04 A	2.0 A	3.52 A
DC Resistance (DCR)	39 mOhm Max	30 mOhm Max	33 mOhm
Shielding	Shielded	Shielded	Shielded
Core Type	Ferrite	Ferrite (Drum Core, Wirewound)	Wirewound
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C to 125°C	-55°C to 125°C	-40°C to 165°C
Package / Case	Nonstandard	Nonstandard	Nonstandard
Size / Dimension	6.90mm x 6.90mm	7.30mm x 7.30mm	7.60mm x 7.60mm
Height - Seated (Max)	4.80 mm	4.50 mm	3.55 mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

B82472G6472M000 (EPCOS - TDK Electronics):

This substitute provides equivalent inductance and tolerance with lower DC resistance (30 mOhm vs. 39 mOhm), resulting in reduced power dissipation. The current rating of 2.5 A is lower than the main part's 2.8 A specification; this substitute is suitable only for applications where peak current does not exceed 2.5 A. The saturation current of 2.0 A is the lowest among the three parts and must be verified against application peak current demands. The extended lower operating temperature range (-55°C) provides additional thermal margin in cold environments. Physical dimensions are slightly larger (7.30mm x 7.30mm), requiring PCB layout verification. All compliance certifications (RoHS3, MSL 1) are met. REACH status is unaffected.

DRA73-4R7-R (Eaton - Electronics Division):

This substitute exceeds the main part's current rating (2.92 A vs. 2.8 A) and provides the highest saturation current (3.52 A), offering superior margin against core saturation. DC resistance of 33 mOhm is lower than the main part, reducing thermal losses. The extended operating temperature range (-40°C to 165°C) supports high-temperature applications beyond the main part's 125°C limit. The part carries AEC-Q200 automotive qualification, indicating enhanced reliability for demanding environments. Physical dimensions are the largest (7.60mm x 7.60mm) with the lowest profile (3.55mm height), which may provide advantages in space-constrained designs. All compliance certifications (RoHS3, MSL 1) are met. REACH status is unaffected.

Selection Criteria:

For current-limited applications (≤2.5 A): B82472G6472M000 is acceptable with lower power dissipation.
For full-rated or high-current applications (2.8 A or higher): DRA73-4R7-R is preferred due to higher current rating and saturation margin.
For extended temperature operation (>125°C): DRA73-4R7-R supports up to 165°C.
For space-constrained PCB layouts: DRA73-4R7-R offers the lowest profile (3.55mm).
For standard temperature range applications: Both substitutes are acceptable if current requirements are met.

All three parts maintain Active product status, RoHS3 compliance, and MSL 1 rating, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can B82472G6472M000 be used as a direct replacement for CDRR75NP-4R7MC?

A: B82472G6472M000 is electrically equivalent in inductance and tolerance but has a lower current rating (2.5 A vs. 2.8 A). It is suitable only if the application's continuous current requirement does not exceed 2.5 A. The saturation current of 2.0 A must be verified against peak current demands. Physical dimensions are slightly larger (7.30mm x 7.30mm vs. 6.90mm x 6.90mm), requiring PCB layout confirmation.

Q: What is the primary difference between DRA73-4R7-R and CDRR75NP-4R7MC?

A: DRA73-4R7-R exceeds the main part in current rating (2.92 A vs. 2.8 A), saturation current (3.52 A vs. 2.04 A), and operating temperature range (-40°C to 165°C vs. -40°C to 125°C). DC resistance is lower (33 mOhm vs. 39 mOhm), reducing power dissipation. Physical dimensions are larger (7.60mm x 7.60mm), but the profile is lower (3.55mm vs. 4.80mm). DRA73-4R7-R includes AEC-Q200 automotive qualification.

Q: Are all three parts RoHS3 compliant?

A: Yes. CDRR75NP-4R7MC, B82472G6472M000, and DRA73-4R7-R are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current regulatory requirements for electronic component manufacturing and assembly.

Q: What is the significance of saturation current (Isat) in inductor substitution?

A: Saturation current indicates the peak current level at which the inductor's core begins to saturate, causing inductance to degrade. For safe operation, the application's peak current must remain below the part's Isat value. CDRR75NP-4R7MC has Isat of 2.04 A, B82472G6472M000 has 2.0 A, and DRA73-4R7-R has 3.52 A. Applications with peak currents above 2.04 A should use DRA73-4R7-R to maintain inductance stability.

Q: Can these parts be used interchangeably in automated PCB assembly?

A: All three parts are supplied in Tape & Reel (TR) packaging for automated assembly. However, physical dimensions differ: CDRR75NP-4R7MC is 6.90mm x 6.90mm x 4.80mm, B82472G6472M000 is 7.30mm x 7.30mm x 4.50mm, and DRA73-4R7-R is 7.60mm x 7.60mm x 3.55mm. PCB footprint and pick-and-place machine settings must be verified for each part before assembly.

Q: Which substitute is best for high-temperature applications?

A: DRA73-4R7-R supports operating temperatures up to 165°C, compared to 125°C for CDRR75NP-4R7MC and 125°C for B82472G6472M000. For applications requiring sustained operation above 125°C, DRA73-4R7-R is the appropriate choice.

Q: What does "Nonstandard" package type mean?

A: "Nonstandard" indicates that the package dimensions do not conform to industry-standard inductor packages (such as 1210, 1812, or other EIA designations). All three parts use proprietary nonstandard packages specific to their respective manufacturers. Physical dimensions must be verified against PCB layout requirements for each part individually.

Q: Are there any automotive or reliability certifications associated with these parts?

A: DRA73-4R7-R carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and quality standards. CDRR75NP-4R7MC and B82472G6472M000 do not list AEC-Q200 certification in the provided specifications. For automotive applications, DRA73-4R7-R is the qualified choice.

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