74457115 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74457115 is a 15 µH unshielded drum core wirewound inductor rated for 5 A continuous current with a maximum DC resistance of 35 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is designed for applications requiring fixed inductance in compact form factors. The part is currently active in production and ROHS3 compliant. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility can be maintained across alternative manufacturers.

Key Parameters

Parameter	Value
Inductance	15 µH
Current Rating	5 A
DC Resistance (DCR)	35 mOhm Max
Current - Saturation (Isat)	9 A
Inductance Tolerance	±15%
Core Material	Ferrite
Shielding	Unshielded
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package Dimensions	22.00 mm L x 15.00 mm W x 7.80 mm H
Frequency - Self Resonant	15 MHz
Inductance Test Frequency	100 kHz

Substitute Part Grouping Explanation

Substitution eligibility for the 74457115 is determined by strict equivalence across the following critical parameters:

Inductance value: 15 µH with ±15% tolerance
Current rating: 5 A minimum continuous current capability
DC resistance: Must not exceed 35 mOhm maximum
Core type: Ferrite drum core, unshielded construction
Operating temperature range: -40°C to 125°C minimum
Package dimensions: 22.00 mm x 15.00 mm x 7.80 mm maximum
Saturation current: 9 A minimum
Mounting: Surface mount, nonstandard package
Compliance: ROHS3 compliant, REACH unaffected

The Bourns SDR2207-150YL meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Parameter	74457115 (Würth Elektronik)	SDR2207-150YL (Bourns Inc.)	Match Status
Inductance	15 µH	15 µH	Equivalent
Current Rating	5 A	5 A	Equivalent
DC Resistance (DCR)	35 mOhm Max	28.8 mOhm Max	Substitute Superior
Inductance Tolerance	±15%	±15%	Equivalent
Current - Saturation (Isat)	9 A	9 A	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Dimensions	22.00 mm x 15.00 mm x 7.80 mm	22.00 mm x 15.00 mm x 7.80 mm	Equivalent
Frequency - Self Resonant	15 MHz	16 MHz	Substitute Superior
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both the 74457115 and SDR2207-150YL are active production components with full ROHS3 compliance and REACH unaffected status, making either suitable for new designs and existing applications. The SDR2207-150YL demonstrates improved performance characteristics with lower DC resistance (28.8 mOhm versus 35 mOhm maximum) and higher self-resonant frequency (16 MHz versus 15 MHz), providing operational advantages in applications sensitive to parasitic resistance or high-frequency performance. Selection between these parts should be based on supply chain availability, lead time requirements, and cost considerations, as both meet all specified electrical and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-150YL replace the 74457115 in existing designs?

A: Yes. The SDR2207-150YL is a direct substitute meeting all electrical specifications (15 µH inductance, 5 A rating, 9 A saturation current) and mechanical requirements (identical package dimensions and surface mount configuration). Both components operate across -40°C to 125°C and maintain ±15% inductance tolerance.

Q: What is the significance of the lower DC resistance in the SDR2207-150YL?

A: The SDR2207-150YL maximum DC resistance of 28.8 mOhm is lower than the 74457115 specification of 35 mOhm maximum. This reduces resistive losses and heat generation in the inductor, which may improve efficiency in power conversion and filtering applications.

Q: Are there differences in high-frequency performance?

A: The SDR2207-150YL has a self-resonant frequency of 16 MHz compared to 15 MHz for the 74457115. This higher resonant frequency may provide better performance in applications operating near or above 15 MHz.

Q: Do both parts meet regulatory requirements?

A: Yes. Both the 74457115 and SDR2207-150YL are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: Are the package dimensions identical?

A: Yes. Both components share identical package dimensions of 22.00 mm length x 15.00 mm width x 7.80 mm height maximum seated height, ensuring mechanical compatibility in surface mount applications.

Q: What is the moisture sensitivity level for these components?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.

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