CDR95NP-4R7MC Equivalent & Substitute Parts

Part Overview

The CDR95NP-4R7MC is a 4.7 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 5.8 A continuous current with a maximum DC resistance of 15.5 mOhm and operates across the temperature range of -40°C to 100°C. The part is classified as obsolete, necessitating identification of active equivalent components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	CDR95NP-4R7MC
Inductance	4.7 µH
Inductance Tolerance	±20%
Current Rating (Amps)	5.8 A
Current - Saturation (Isat)	6.4 A
DC Resistance (DCR) Max	15.5 mOhm
Type	Drum Core, Wirewound
Material - Core	Ferrite
Shielding	Unshielded
Operating Temperature	-40°C ~ 100°C
Mounting Type	Surface Mount
Size / Dimension	0.508" L x 0.370" W (12.90mm x 9.40mm)
Height - Seated (Max)	0.205" (5.20mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the CDR95NP-4R7MC is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Inductance value: 4.7 µH (fixed)
Inductance tolerance: ±20% (fixed)
Shielding type: Unshielded (fixed)
Mounting type: Surface Mount (fixed)
Core material: Ferrite (for drum core types)

Secondary Compatibility Criteria:

Current rating must equal or exceed 5.8 A
DC resistance must not exceed 15.5 mOhm
Operating temperature range must encompass or extend the original -40°C to 100°C specification
Package dimensions must be compatible with PCB layout constraints
RoHS3 compliance required for regulatory alignment

Substitute parts are grouped into two categories: Direct Substitutes (meeting all primary and secondary criteria with minimal design impact) and Similar Substitutes (meeting primary criteria with trade-offs in current rating, DC resistance, or physical dimensions that require design verification).

Parameter Comparison

Parameter	CDR95NP-4R7MC	SDR1005-4R7ML	B82476A1472M000	B82476B1472M100	P0751.472NLT	SDR2207-4R7ML	UP2-4R7-R	UP2B-4R7-R
Inductance (µH)	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7
Inductance Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Current Rating (A)	5.8	4.5	4.8	5.3	4.8	8.5	5.7	5.5
Current - Saturation (A)	6.4	5.4	5.4	5.4	5.4	15	4.2	4.2
DC Resistance Max (mOhm)	15.5	19	16.5	16.5	33	8.8	17.3	16.5
Type	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound
Material - Core	Ferrite	Ferrite	Ferrite	Ferrite	Not specified	Ferrite	Not specified	Ferrite
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded
Operating Temperature (°C)	-40 ~ 100	-40 ~ 125	-55 ~ 150	-55 ~ 150	-40 ~ 130	-40 ~ 125	Not specified	-40 ~ 85
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Size / Dimension (mm)	12.90 x 9.40	12.70 x 10.00	12.95 x 9.40	12.95 x 9.40	12.95 x 9.40	22.00 x 15.00	13.74 x 8.76	13.97 x 10.41
Height - Seated Max (mm)	5.20	5.00	5.08	5.08	5.46	7.80	5.86	6.00
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitutes (Preferred Selection):

B82476B1472M100 (EPCOS - TDK Electronics) is the primary recommended substitute. This part maintains ferrite drum core construction, matches the 4.7 µH inductance specification, and provides 5.3 A current rating with 16.5 mOhm maximum DC resistance. The extended operating temperature range (-55°C to 150°C) exceeds the original specification. Physical dimensions (12.95mm x 9.40mm x 5.08mm) are compatible with the original PCB layout. AEC-Q200 automotive qualification provides additional reliability assurance. ROHS3 compliance and unlimited MSL rating ensure regulatory and manufacturing process compatibility.

B82476A1472M000 (EPCOS - TDK Electronics) serves as a secondary direct substitute with identical inductance, tolerance, and core material. The 4.8 A current rating and 16.5 mOhm DC resistance provide acceptable performance margins. Extended temperature range (-55°C to 150°C) and ROHS3 compliance support long-term availability and regulatory requirements.

Compatible Substitutes (Application-Dependent):

SDR1005-4R7ML (Bourns Inc.) is suitable for applications where the 4.5 A current rating meets design requirements. The 19 mOhm maximum DC resistance represents a trade-off in power dissipation characteristics. Ferrite drum core construction and ROHS3 compliance maintain electrical and regulatory compatibility. Slightly larger physical dimensions (12.70mm x 10.00mm) require PCB layout verification.

UP2B-4R7-R (Eaton - Electronics Division) provides ferrite drum core construction with 5.5 A current rating and 16.5 mOhm DC resistance. The reduced operating temperature range (-40°C to 85°C) limits applicability to designs not requiring extended high-temperature performance. Physical dimensions (13.97mm x 10.41mm x 6.00mm) require PCB clearance verification.

Limited Compatibility Substitutes:

SDR2207-4R7ML (Bourns Inc.) offers superior current handling (8.5 A) and lowest DC resistance (8.8 mOhm) but introduces significant physical size increase (22.00mm x 15.00mm x 7.80mm). This part is suitable only for applications with available PCB space and where enhanced current capacity provides design margin.

P0751.472NLT (Pulse Electronics) presents elevated DC resistance (33 mOhm maximum), which doubles power dissipation compared to the original specification. This part is applicable only in low-current or thermally unconstrained applications.

UP2-4R7-R (Eaton - Electronics Division) exhibits reduced saturation current (4.2 A) relative to the original 6.4 A specification, limiting applicability to designs with conservative current margins. Unspecified operating temperature range introduces uncertainty for temperature-dependent applications.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-4R7ML replace CDR95NP-4R7MC in all applications?

A: SDR1005-4R7ML maintains electrical equivalence in inductance, tolerance, and core material but provides 4.5 A continuous current rating versus the original 5.8 A. Substitution is valid only for applications where circuit current does not exceed 4.5 A. The 19 mOhm maximum DC resistance increases power dissipation by approximately 23% compared to the original 15.5 mOhm specification.

Q: What is the primary advantage of B82476B1472M100 as a substitute?

A: B82476B1472M100 provides the closest electrical match with 5.3 A current rating and 16.5 mOhm DC resistance, both within acceptable margins of the original specification. The extended operating temperature range (-55°C to 150°C) supports applications requiring broader thermal performance. AEC-Q200 qualification provides automotive-grade reliability documentation. Physical dimensions are compatible with the original PCB layout.

Q: Why does SDR2207-4R7ML have larger physical dimensions?

A: SDR2207-4R7ML is designed for higher current applications (8.5 A) with significantly lower DC resistance (8.8 mOhm). The larger drum core (22.00mm x 15.00mm) accommodates heavier gauge wire required for enhanced current capacity. This part is suitable only for designs with available PCB space and where increased current handling provides functional benefit.

Q: Are all substitute parts RoHS3 compliant?

A: B82476B1472M100, B82476A1472M000, SDR1005-4R7ML, SDR2207-4R7ML, and P0751.472NLT are ROHS3 compliant. UP2-4R7-R and UP2B-4R7-R are RoHS compliant but not specifically designated as ROHS3. For applications requiring ROHS3 certification, select from the ROHS3-designated parts.

Q: What is the impact of DC resistance variation on circuit performance?

A: DC resistance directly affects power dissipation and voltage drop across the inductor. The original CDR95NP-4R7MC specifies 15.5 mOhm maximum. Substitutes with higher DC resistance (SDR1005-4R7ML at 19 mOhm, P0751.472NLT at 33 mOhm) increase I²R losses proportionally. For current-limited applications, this increase may be acceptable. For power-sensitive designs, select substitutes with DC resistance at or below 16.5 mOhm.

Q: Can UP2-4R7-R be used in high-temperature applications?

A: UP2-4R7-R operating temperature range is not specified in the provided data. This creates uncertainty for applications requiring defined thermal performance. For temperature-dependent designs, select substitutes with documented operating ranges such as B82476B1472M100 (-55°C to 150°C) or SDR1005-4R7ML (-40°C to 125°C).

Q: What packaging format is used for all substitute parts?

A: All substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The original CDR95NP-4R7MC packaging format is not specified. Tape & Reel format is standard for surface mount production environments and does not introduce compatibility constraints.

Q: How does saturation current affect substitute selection?

A: Saturation current (Isat) defines the current level at which the inductor begins to lose inductance value due to core saturation. The original CDR95NP-4R7MC specifies 6.4 A saturation current. Most substitutes provide lower saturation ratings (5.4 A for EPCOS and Bourns SDR1005 parts, 4.2 A for Eaton parts). For applications approaching saturation limits, SDR2207-4R7ML with 15 A Isat provides superior margin but requires PCB space accommodation.

Q: Is physical size compatibility critical for PCB redesign?

A: Physical dimensions are critical for existing PCB layouts. The original CDR95NP-4R7MC measures 12.90mm x 9.40mm x 5.20mm. B82476B1472M100 and B82476A1472M000 (12.95mm x 9.40mm x 5.08mm) are dimensionally compatible with minimal clearance impact. SDR2207-4R7ML (22.00mm x 15.00mm x 7.80mm) requires PCB redesign. For drop-in replacement without layout modification, select B82476 series parts.

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