CD75NP-471KC Equivalent & Substitute Parts

Part Overview

The CD75NP-471KC is a 470 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring 340 mA current rating with a maximum DC resistance of 1.96 Ohm. The component operates across the temperature range of -40°C to 100°C and is RoHS3 compliant with MSL 1 rating. As an active product with 810 units in stock, equivalent substitute parts may be required for design flexibility, supply chain optimization, or application-specific performance considerations.

Key Parameters

Parameter	Value
Inductance	470 µH
Inductance Tolerance	±10%
Current Rating	340 mA
DC Resistance (DCR)	1.96 Ohm Max
Shielding	Unshielded
Material - Core	Ferrite
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 100°C
Package Type	Nonstandard
Physical Dimensions	0.307" L x 0.276" W (7.80mm x 7.00mm)
Height - Seated (Max)	0.217" (5.50mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD75NP-471KC is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Inductance value: 470 µH
Inductance tolerance: ±10%
Current rating: 340 mA minimum
DC resistance: 1.96 Ohm maximum
Core material: Ferrite
Shielding configuration: Unshielded

Mechanical Parameters (Must Match):

Mounting type: Surface Mount
Package classification: Nonstandard
Physical footprint compatibility: 0.307" L x 0.276" W (7.80mm x 7.00mm) or equivalent
Height constraint: 0.217" (5.50mm) maximum seated height

Compliance Parameters (Must Match):

RoHS3 compliance
MSL rating: 1 (Unlimited)

The substitute part SDR0805-471KL meets all critical electrical and mechanical parameters while maintaining full regulatory compliance. Physical dimensions show minor variation in width (7.80mm vs 7.00mm) and height (5.30mm vs 5.50mm), which remain within acceptable tolerance for nonstandard surface mount packages.

Parameter Comparison

Parameter	CD75NP-471KC (Sumida)	SDR0805-471KL (Bourns)	Match Status
Inductance	470 µH	470 µH	Equivalent
Inductance Tolerance	±10%	±10%	Equivalent
Current Rating (Amps)	340 mA	340 mA	Equivalent
DC Resistance (DCR)	1.96 Ohm Max	1.96 Ohm Max	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature Range	-40°C ~ 100°C	-40°C ~ 125°C	Compatible (Bourns extends upper limit)
Package / Case	Nonstandard	Nonstandard	Equivalent
Length x Width	0.307" x 0.276" (7.80mm x 7.00mm)	0.307" x 0.307" (7.80mm x 7.80mm)	Compatible (width variation 0.8mm)
Height - Seated (Max)	0.217" (5.50mm)	0.209" (5.30mm)	Compatible (height difference 0.2mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Both the CD75NP-471KC and SDR0805-471KL are active products with full RoHS3 compliance and MSL 1 rating, making them suitable for production applications without moisture sensitivity constraints.

CD75NP-471KC (Sumida America Components Inc.):

Primary selection when Sumida supply chain is preferred
Operating temperature range: -40°C to 100°C
Current inventory: 810 units

SDR0805-471KL (Bourns Inc.):

Direct substitute with extended operating temperature range (-40°C to 125°C)
Drum core, wirewound construction provides additional performance data (Q @ 796kHz: 12, Self Resonant Frequency: 4MHz)
Current inventory: 6195 units
Suitable for applications requiring higher temperature operation or enhanced performance characterization

Both parts maintain identical electrical specifications (470 µH, 340 mA, 1.96 Ohm DCR) and physical compatibility within nonstandard surface mount package constraints. Selection between these parts depends on supply availability, manufacturer preference, and application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can SDR0805-471KL replace CD75NP-471KC in existing designs?

A: Yes. Both inductors share identical inductance (470 µH), current rating (340 mA), DC resistance (1.96 Ohm max), and tolerance (±10%). Physical dimensions are compatible within nonstandard package tolerances. Both are RoHS3 compliant with MSL 1 rating.

Q: What is the physical dimension difference between these parts?

A: CD75NP-471KC measures 0.307" L x 0.276" W x 0.217" H (7.80mm x 7.00mm x 5.50mm). SDR0805-471KL measures 0.307" L x 0.307" W x 0.209" H (7.80mm x 7.80mm x 5.30mm). Width differs by 0.8mm and height by 0.2mm. These variations are acceptable for nonstandard surface mount packages.

Q: Does the Bourns substitute offer any performance advantages?

A: SDR0805-471KL provides documented performance parameters: Q factor of 12 at 796 kHz and self-resonant frequency of 4 MHz. It also extends the operating temperature range to 125°C compared to the Sumida part's 100°C maximum.

Q: Are both parts suitable for high-volume production?

A: Yes. Both are active products with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). SDR0805-471KL has higher current inventory (6195 units vs 810 units).

Q: What is the inductance frequency test condition for these parts?

A: Both inductors are tested at 1 kHz for inductance measurement.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and carry MSL 1 rating. SDR0805-471KL includes REACH Unaffected status. Both are classified under ECCN EAR99.

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