SDR0703-4R7M Equivalent & Substitute Parts

Part Overview

The SDR0703-4R7M is a 4.7 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 1.5 A continuous current with a maximum DC resistance of 100mOhm. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing production support and design continuity. The SDR0703 series provides ferrite core construction suitable for applications requiring compact surface mount inductors with moderate current handling and low DC resistance characteristics.

Substiute Parts

SDR0703-4R7M

Bourns Inc.In Stock: 964SDR0703-4R7M Datasheet

Current PartRFQ

SDR0703-4R7ML

Bourns Inc.In Stock: 2053SDR0703-4R7ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDR0703-4R7M is determined by strict equivalence across the following critical parameters:

• Inductance Value: 4.7 µH with ±20% tolerance
• Current Rating: 1.5 A minimum continuous current capability
• Saturation Current (Isat): 2.1 A minimum
• DC Resistance: 100mOhm maximum
• Core Material: Ferrite construction
• Shielding Configuration: Unshielded
• Operating Temperature Range: -40°C to 125°C minimum
• Mounting Technology: Surface mount compatible
• Physical Footprint: 6.50mm x 4.50mm x 2.70mm maximum
• Regulatory Compliance: ROHS3 compliant, REACH unaffected

The SDR0703-4R7ML qualifies as a direct substitute based on identical electrical specifications and mechanical dimensions. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The SDR0703-4R7ML is the direct functional equivalent of the SDR0703-4R7M. Both components share identical electrical and mechanical specifications, including inductance value, current ratings, DC resistance, core material, and operating temperature range. The SDR0703-4R7ML carries active product status from Bourns Inc., ensuring continued availability and manufacturing support, whereas the SDR0703-4R7M is classified as obsolete.

For new designs or production continuity, the SDR0703-4R7ML is the appropriate selection. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements. The packaging difference—bulk versus tape and reel format—reflects manufacturing and supply chain considerations rather than functional capability. Component selection should be based on procurement requirements and assembly process specifications.

Frequently Asked Questions (FAQ)

Q: Can the SDR0703-4R7ML directly replace the SDR0703-4R7M in existing designs?

A: Yes. The SDR0703-4R7ML is electrically and mechanically equivalent to the SDR0703-4R7M. All critical parameters including inductance, current rating, DC resistance, core material, and physical dimensions are identical. The components are interchangeable from a functional standpoint.

Q: What is the significance of the product status difference between these parts?

A: The SDR0703-4R7M is classified as obsolete, indicating Bourns Inc. has discontinued active manufacturing and support. The SDR0703-4R7ML maintains active status, ensuring ongoing availability, manufacturing consistency, and technical support. For production applications, the active part is preferred.

Q: Are there packaging considerations when substituting between these parts?

A: The SDR0703-4R7M is supplied in bulk packaging, while the SDR0703-4R7ML is supplied in tape and reel format. This distinction affects procurement, storage, and automated assembly processes. Verify that your assembly equipment and supply chain can accommodate the tape and reel format before implementation.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the SDR0703-4R7M and SDR0703-4R7ML are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (unlimited) for both components, indicating no special moisture control requirements during storage or handling.

Q: What parameters must remain constant when selecting a substitute inductor?

A: The inductance value (4.7 µH), tolerance (±20%), current rating (1.5 A), saturation current (2.1 A), DC resistance (100mOhm maximum), core material (ferrite), shielding configuration (unshielded), and physical footprint (6.50mm x 4.50mm x 2.70mm) must all be maintained. Deviation from any of these parameters constitutes a different component with potentially different circuit behavior.