74454115 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74454115 is a 15 µH shielded drum core wirewound inductor rated for 1.7 A continuous current with a maximum DC resistance of 85 mOhm. This component is designed for surface mount applications requiring compact form factor and electromagnetic shielding. The part is currently active in production and widely available in inventory. Substitute parts may be required due to supply chain constraints, regional availability, or specific procurement preferences while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Inductance	15 µH
Inductance Tolerance	±20%
Current Rating	1.7 A
DC Resistance (Max)	85 mOhm
Shielding	Shielded
Operating Temperature Range	-40°C to 125°C
Mounting Type	Surface Mount
Package Dimensions	12.70 mm L × 10.00 mm W × 5.20 mm H (Max)
Self Resonant Frequency	20 MHz
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74454115 is determined by strict equivalence across the following critical parameters:

Inductance Value: 15 µH with ±20% tolerance
Current Rating: Minimum 1.7 A continuous current capability
DC Resistance: Maximum 85 mOhm
Shielding: Shielded construction required
Package Dimensions: 12.70 mm × 10.00 mm × 5.20 mm (Max height)
Mounting Type: Surface mount configuration
Operating Temperature: -40°C to 125°C range
Compliance: ROHS3 compliant, MSL 1 rating

The Bourns SRR1005-150M meets all substitution criteria. Both parts share identical inductance, current rating, DC resistance specification, shielding type, physical dimensions, mounting method, temperature range, and regulatory compliance status.

Parameter Comparison

Parameter	Würth Elektronik 74454115	Bourns SRR1005-150M	Match Status
Inductance	15 µH	15 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating (Amps)	1.7 A	1.7 A	Equivalent
DC Resistance (Max)	85 mOhm	85 mOhm	Equivalent
Shielding	Shielded	Shielded	Equivalent
Operating Temperature	-40°C to 125°C	-40°C to 125°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Dimensions	12.70 mm × 10.00 mm × 5.20 mm	12.70 mm × 10.00 mm × 5.20 mm	Equivalent
Self Resonant Frequency	20 MHz	20 MHz	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	MSL 1	MSL 1	Equivalent
Current - Saturation (Isat)	3.0 A	2.1 A	Bourns rated lower

Engineering Selection Recommendations

Both the Würth Elektronik 74454115 and Bourns SRR1005-150M are active production components with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

Würth Elektronik 74454115: Choose when saturation current margin of 3.0 A is required or when Würth supply chain preference is established.

Bourns SRR1005-150M: Choose when Bourns component availability or procurement terms are favorable. The saturation current rating of 2.1 A remains adequate for applications operating at or below the 1.7 A continuous current specification.

Both components are suitable for direct substitution in applications where the 1.7 A current rating and 85 mOhm DC resistance are the primary design constraints. Inventory availability and lead time should be evaluated at the time of procurement.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1005-150M replace the Würth Elektronik 74454115 in existing designs?

A: Yes. Both parts meet identical electrical specifications for inductance, current rating, DC resistance, and operating temperature range. Physical dimensions and mounting type are identical, allowing direct PCB substitution without layout modification.

Q: What is the significance of the different saturation current ratings (3.0 A vs 2.1 A)?

A: The saturation current specification indicates the current level at which inductance begins to degrade. Both parts are rated for 1.7 A continuous operation. The Würth part provides additional saturation margin. For applications operating at or below 1.7 A, both parts perform equivalently.

Q: Are both parts suitable for high-frequency applications?

A: Both parts have a self-resonant frequency of 20 MHz and are suitable for applications within this frequency range. The inductance frequency test specifications differ (100 kHz for Würth, 1 kHz for Bourns), but this reflects measurement methodology and does not affect circuit performance.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the 74454115 and SRR1005-150M are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level) ratings.

Q: Can these parts be used interchangeably in tape and reel packaging?

A: Yes. Both parts are supplied in tape and reel packaging suitable for automated assembly processes. Physical dimensions are identical, ensuring compatibility with standard pick-and-place equipment.

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