SMP3316-471M Equivalent & Substitute Parts

Part Overview

The SMP3316-471M is a 4.7 µH unshielded molded inductor manufactured by Gowanda Electronics, designed for surface mount applications requiring moderate current handling up to 5.6 A. This component is classified as Active product status with 706 units currently in stock. Alternative components become necessary when supply constraints occur, when specific packaging requirements change, or when design revisions require evaluation of functionally equivalent inductors with comparable electrical characteristics.

Substiute Parts

SMP3316-471M

Gowanda ElectronicsIn Stock: 761SMP3316-471M Datasheet

Current PartRFQ

SDR1005-4R7ML

Bourns Inc.In Stock: 4834SDR1005-4R7ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDR1005-4R7ML from Bourns Inc. qualifies as a functional substitute based on the following alignment of critical parameters:

Matching Parameters:

• Inductance: 4.7 µH (identical)
• Inductance Tolerance: ±20% (identical)
• Shielding: Unshielded (identical)
• Mounting Type: Surface Mount (identical)
• Moisture Sensitivity Level: MSL 1 (identical)
• Operating Temperature Range: -40°C to 125°C (overlaps primary range)

Comparable Parameters:

• Current Rating: 4.5 A (SDR1005) vs. 5.6 A (SMP3316) — substitute rated lower
• DC Resistance: 19 mOhm Max (SDR1005) vs. 16 mOhm Max (SMP3316) — substitute has slightly higher resistance
• Physical Dimensions: Similar form factor for surface mount applications

The substitute maintains the core electrical function (4.7 µH inductance) and environmental compliance. Differences in current rating and DCR must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

SMP3316-471M (Primary): Select when maximum current capacity (5.6 A) and lower DC resistance (16 mOhm) are required. Active product status ensures continued availability. Not applicable RoHS status indicates this component may contain restricted substances under RoHS 3 regulations.

SDR1005-4R7ML (Substitute): Select when ROHS3 compliance is mandatory for the end application. This substitute is suitable for circuits operating at or below 4.5 A continuous current. The slightly higher DCR (19 mOhm) results in marginally increased power dissipation. Operating temperature minimum of -40°C is acceptable for applications not requiring -55°C operation. Active product status and 4819 units in stock provide supply security.

Both components are classified as Active and carry MSL 1 rating, indicating stable long-term availability and minimal moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-4R7ML replace SMP3316-471M in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 4.5 A continuous operation. The SDR1005-4R7ML saturation current of 5.4 A is marginally lower than the SMP3316-471M at 5.6 A. Applications requiring the full 5.6 A rating must use the original SMP3316-471M.

Q: What is the impact of the 3 mOhm difference in DC resistance?

A: At 4.5 A (SDR1005 maximum), the additional 3 mOhm DCR results in approximately 60.75 mW additional power dissipation compared to the SMP3316-471M at the same current. This difference is typically negligible in most applications but should be calculated for thermal-sensitive designs.

Q: Are there temperature range limitations with the substitute?

A: The SDR1005-4R7ML operates from -40°C to 125°C, compared to the SMP3316-471M range of -55°C to 125°C. Applications requiring operation below -40°C must use the original part.

Q: What is the packaging difference between these parts?

A: The SMP3316-471M packaging is listed as nonstandard. The SDR1005-4R7ML is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Verify reel compatibility with your assembly equipment.

Q: Does RoHS compliance affect substitution decisions?

A: The SDR1005-4R7ML is ROHS3 compliant, while the SMP3316-471M status is not applicable. If your application or end market requires ROHS3 certification, the SDR1005-4R7ML is the appropriate selection.

Q: Are both parts suitable for long-term storage?

A: Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard dry storage conditions are sufficient for indefinite shelf life.