SDO-25-0004 Equivalent & Substitute Parts

Part Overview

The SDO-25-0004 is a 20 µH unshielded inductor rated for 7 A continuous current in surface mount configuration, manufactured by SCHURTER Inc. as part of the SDO series. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs.

Substiute Parts

SDO-25-0004

SCHURTER Inc.In Stock: 711SDO-25-0004 Datasheet

Current PartRFQ

DSO1-25-0004

SCHURTER Inc.In Stock: 1080DSO1-25-0004 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the SDO-25-0004 is constrained by the following critical parameters: inductance value (20 µH), current rating (7 A), and mounting configuration. The provided substitute part DSO1-25-0004 shares the same current rating (7 A) and manufacturer (SCHURTER Inc.), establishing baseline compatibility. However, this substitute represents a different product category (common mode choke versus fixed inductor) with different functional characteristics, mounting type (through hole versus surface mount), and physical form factor. Substitution viability depends on application-specific requirements regarding inductance function, circuit topology, and physical space constraints.

Parameter Comparison

Engineering Selection Recommendations

The DSO1-25-0004 is an active product with current manufacturing status and ROHS3 compliance, providing supply chain continuity advantages over the obsolete SDO-25-0004. However, direct substitution requires verification of application compatibility due to fundamental differences: the DSO1-25-0004 is a common mode choke (EMI filtering function) rather than a fixed inductor (energy storage function), operates in through hole configuration rather than surface mount, and exhibits different electrical characteristics. Selection should be based on whether the application requires the specific filtering characteristics of a common mode choke or the inductance characteristics of a fixed inductor, and whether the through hole mounting configuration is compatible with the target PCB design.

Frequently Asked Questions (FAQ)

Q: Can the DSO1-25-0004 directly replace the SDO-25-0004 in all applications?

A: No. While both components share the same 7 A current rating and manufacturer, they serve different functions. The SDO-25-0004 is a fixed inductor for energy storage or filtering in DC circuits, while the DSO1-25-0004 is a common mode choke designed for differential-mode EMI suppression. Substitution is only valid if the application specifically requires common mode choke functionality.

Q: What are the mounting compatibility implications?

A: The SDO-25-0004 uses surface mount technology, while the DSO1-25-0004 requires through hole mounting. This represents a significant PCB design change and is not a direct pin-compatible substitution. Board redesign would be necessary to accommodate the different mounting method.

Q: Are there compliance differences between these parts?

A: The DSO1-25-0004 carries ROHS3 compliance certification, while the SDO-25-0004 status is not specified. The DSO1-25-0004 also provides documented operating temperature range (-40°C ~ 125°C) and maximum DC resistance specification (10 mOhm), offering more complete technical documentation for design validation.

Q: What should be considered when evaluating alternatives?

A: Evaluate whether the application requires fixed inductor characteristics (energy storage, specific inductance value) or common mode choke characteristics (EMI filtering). Confirm PCB mounting capability for through hole components. Verify that the 10 mOhm maximum DC resistance specification is acceptable for the application's power dissipation requirements.