DC1390R-474K Fixed Inductor Equivalent & Substitute Parts

Part Overview

The DC1390R-474K is a 470 µH unshielded fixed inductor manufactured by API Delevan Inc., designed for through-hole mounting applications. This ferrite-core inductor is rated for 4.57 A continuous current with a maximum DC resistance of 114 mOhm and operates across the temperature range of -55°C to 125°C. The component maintains Active product status and is RoHS3 compliant.

Equivalent and substitute parts are identified when design requirements permit component replacement due to inventory constraints, supply chain disruptions, or end-of-life considerations. Substitutes must maintain electrical and mechanical compatibility within the specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Inductance	470	µH
Inductance Tolerance	±10%	-
Current Rating	4.57	A
DC Resistance (Max)	114	mOhm
Saturation Current	6.2	A
Core Material	Ferrite	-
Shielding	Unshielded	-
Mounting Type	Through Hole	-
Package Type	Radial, Vertical Cylinder	-
Operating Temperature Range	-55 to 125	°C
Test Frequency	1	kHz

Substitute Part Grouping Explanation

Substitution eligibility for the DC1390R-474K is determined by the following critical parameters:

Electrical Compatibility Requirements:

Inductance value: 470 µH at ±10% tolerance
DC resistance: 114 mOhm maximum
Current rating: minimum 4.57 A continuous
Saturation current: minimum 6.2 A
Core material: Ferrite
Shielding configuration: Unshielded

Mechanical Compatibility Requirements:

Mounting type: Through Hole
Package configuration: Radial, Vertical Cylinder
Inductance test frequency: 1 kHz

Compliance Requirements:

RoHS3 compliance
REACH unaffected status
ECCN classification: EAR99

The substitute part 1140-471K-RC manufactured by Bourns Inc. meets all electrical and mechanical compatibility criteria within the specified parameter ranges.

Parameter Comparison

Parameter	DC1390R-474K (API Delevan)	1140-471K-RC (Bourns)	Compatibility
Inductance	470 µH	470 µH	Match
Inductance Tolerance	±10%	±10%	Match
Current Rating	4.57 A	4.9 A	Compatible (higher rating)
DC Resistance (Max)	114 mOhm	114 mOhm	Match
Saturation Current	6.2 A	9.5 A	Compatible (higher rating)
Core Material	Ferrite	Ferrite	Match
Shielding	Unshielded	Unshielded	Match
Mounting Type	Through Hole	Through Hole	Match
Package Type	Radial, Vertical Cylinder	Radial, Vertical Cylinder	Match
Operating Temperature Range	-55 to 125°C	-55 to 105°C	Partial (substitute has narrower range)
Test Frequency	1 kHz	1 kHz	Match
RoHS3 Compliance	Yes	Yes	Match
REACH Status	Unaffected	Unaffected	Match
ECCN Classification	EAR99	EAR99	Match

Engineering Selection Recommendations

The 1140-471K-RC from Bourns Inc. is a qualified substitute for the DC1390R-474K based on the following engineering criteria:

Electrical Performance: Both components deliver identical inductance values at 470 µH with matching ±10% tolerance and DC resistance specifications of 114 mOhm maximum. The substitute part provides higher current and saturation ratings (4.9 A and 9.5 A respectively), which exceed the original part requirements and present no compatibility issues.

Mechanical Compatibility: Package configurations are identical, with both components specified as radial, vertical cylinder through-hole inductors suitable for PCB mounting in the same footprint.

Regulatory Compliance: Both parts maintain RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, ensuring equivalent regulatory standing.

Temperature Operating Range: The substitute part operates from -55°C to 105°C, which is narrower than the original part's -55°C to 125°C range. Applications requiring operation above 105°C must retain the DC1390R-474K.

Product Status: Both components maintain Active product status, ensuring continued availability and support.

Frequently Asked Questions (FAQ)

Q: Can the 1140-471K-RC replace the DC1390R-474K in all applications?

A: The 1140-471K-RC is electrically and mechanically compatible for applications operating within the temperature range of -55°C to 105°C. Applications requiring operation above 105°C must use the DC1390R-474K due to its extended upper temperature limit of 125°C.

Q: Are the physical dimensions identical between these two parts?

A: Both components are specified as radial, vertical cylinder packages with through-hole mounting. The DC1390R-474K has a diameter of 1.480" (37.60 mm) and seated height of 1.064" (27.03 mm). The 1140-471K-RC has a diameter of 1.500" (38.10 mm) and seated height of 1.030" (26.16 mm). These minor dimensional variations are within typical PCB layout tolerances for radial through-hole components.

Q: What is the significance of the higher current and saturation ratings on the substitute part?

A: The 1140-471K-RC provides current rating of 4.9 A and saturation current of 9.5 A, compared to 4.57 A and 6.2 A on the original part. These higher ratings indicate greater thermal and magnetic headroom, making the substitute part suitable for the same applications without derating concerns.

Q: Are both parts RoHS3 compliant?

A: Yes, both the DC1390R-474K and 1140-471K-RC are RoHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.

Q: What is the inductance test frequency for both parts?

A: Both components are tested at 1 kHz inductance frequency, ensuring measurement consistency and direct parameter comparison.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message