SPD74R-224M Equivalent & Substitute Parts

Part Overview

The SPD74R-224M is a 220 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 600 mA continuous current with a maximum DC resistance of 1.17Ohm. This surface mount component operates across the temperature range of -55°C to 125°C and is ROHS3 compliant. The part is currently active in production with 1297 units in stock. Substitute parts are identified when equivalent inductance values, current ratings, and core materials are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

SPD74R-224M

API Delevan Inc.In Stock: 1352SPD74R-224M Datasheet

Current PartRFQ

VLS5045EX-221M-H

TDK CorporationIn Stock: 2966VLS5045EX-221M-H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The VLS5045EX-221M-H from TDK Corporation qualifies as a substitute based on the following alignment of critical electrical parameters:

Inductance value matches at 220 µH with identical ±20% tolerance. Both components utilize ferrite core material with shielding. The substitute maintains surface mount configuration suitable for the same PCB assembly processes. Both parts are ROHS3 compliant and carry MSL 1 rating, ensuring compatibility with standard manufacturing and storage conditions.

The substitute part operates within the -40°C to 125°C range, which overlaps the primary operating window of the main part. Current rating of the substitute is 450 mA, which is lower than the main part's 600 mA specification. DC resistance of the substitute is 1.365Ohm maximum, which is higher than the main part's 1.17Ohm maximum. These differences must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the SPD74R-224M and VLS5045EX-221M-H are active production components with ROHS3 compliance and unlimited moisture sensitivity ratings, suitable for standard manufacturing environments. The TDK substitute carries AEC-Q200 qualification, indicating automotive-grade reliability testing.

Selection between these parts depends on circuit current requirements. Applications requiring the full 600 mA rating must use the SPD74R-224M. Applications with maximum current demands of 450 mA or lower may utilize the TDK substitute. The higher DC resistance of the substitute (1.365Ohm vs. 1.17Ohm) results in increased power dissipation; circuits sensitive to resistive losses should account for this 0.195Ohm difference in thermal calculations.

The SPD74R-224M supports operation down to -55°C, while the TDK substitute operates from -40°C minimum. Applications requiring extended low-temperature performance below -40°C must retain the API Delevan part.

Frequently Asked Questions (FAQ)

Q: Can the VLS5045EX-221M-H directly replace the SPD74R-224M in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed 450 mA and operating temperature remains above -40°C. The higher DC resistance of the substitute must be evaluated for thermal impact in the specific application.

Q: What is the significance of the inductance tolerance ±20% for both parts?

A: Both parts share identical ±20% tolerance, meaning the actual inductance value may vary from 176 µH to 264 µH. Circuit designs must accommodate this tolerance range for both the main part and substitute.

Q: Are there physical size differences between these components?

A: Yes. The SPD74R-224M measures 0.287" L x 0.287" W x 0.185" H (7.30mm x 7.30mm x 4.70mm). The VLS5045EX-221M-H measures 0.209" L x 0.197" W x 0.177" H (5.30mm x 5.00mm x 4.50mm). PCB layout and thermal management considerations may be affected by these dimensional differences.

Q: What does AEC-Q200 qualification on the TDK part indicate?

A: AEC-Q200 is an automotive electronics qualification standard. The TDK substitute meets automotive-grade reliability and testing requirements, making it suitable for automotive applications where the main part may not carry this certification.

Q: How do the DC resistance values affect circuit performance?

A: The SPD74R-224M has 1.17Ohm maximum DC resistance, while the TDK substitute has 1.365Ohm maximum. In circuits carrying 450 mA, the substitute dissipates approximately 0.276 watts compared to 0.236 watts for the main part. This 0.04-watt difference must be considered in thermal budget calculations.