SMP3316-473M Equivalent & Substitute Parts

Part Overview

The SMP3316-473M is a 470 µH unshielded molded inductor manufactured by Gowanda Electronics, designed for surface mount applications requiring moderate current handling up to 650 mA. This component is classified as Active product status with 1065 units currently in stock. Alternative components may be required due to supply constraints, design optimization, or specific application requirements where substitute inductors meet the electrical and mechanical specifications.

Substiute Parts

SMP3316-473M

Gowanda ElectronicsIn Stock: 1099SMP3316-473M Datasheet

Current PartRFQ

SDR1005-471KL

Bourns Inc.In Stock: 6391SDR1005-471KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDR1005-471KL from Bourns Inc. qualifies as a functional substitute based on the following alignment of critical electrical parameters:

Matching Criteria:

• Inductance value: 470 µH (identical nominal value)
• Shielding type: Unshielded (identical)
• Mounting type: Surface Mount (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)
• Operating temperature range: -40°C ~ 125°C (overlaps with SMP3316-473M range)

Substitution Logic: The SDR1005-471KL maintains the same inductance specification and unshielded configuration. While the current rating (450 mA) is lower than the SMP3316-473M (650 mA), and the DCR is higher (1.7 Ohm vs. 1.23 Ohm), these differences must be evaluated against specific circuit requirements. The substitute operates within compatible temperature ranges and shares identical moisture sensitivity classification.

Parameter Comparison

Engineering Selection Recommendations

SMP3316-473M (Primary): Select when maximum current capacity (650 mA) and lower DC resistance (1.23 Ohm) are circuit requirements. Product status is Active with established supply availability.

SDR1005-471KL (Substitute): Select when lower inductance tolerance (±10% vs. ±20%) is beneficial for circuit precision, or when the reduced physical footprint (smaller dimensions and lower profile) accommodates PCB layout constraints. The SDR1005-471KL carries ROHS3 compliance certification. Verify that the 450 mA current rating and 1.7 Ohm DCR are acceptable for the target application. The narrower operating temperature minimum (-40°C vs. -55°C) must be confirmed against application requirements.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-471KL directly replace SMP3316-473M in all applications?

A: Direct replacement depends on circuit current requirements. The SDR1005-471KL has a maximum current rating of 450 mA compared to 650 mA for the SMP3316-473M. If circuit current demand exceeds 450 mA, the substitute is not suitable. Additionally, the higher DCR (1.7 Ohm vs. 1.23 Ohm) will increase power dissipation.

Q: What are the physical compatibility considerations?

A: Both components are surface mount inductors with similar footprints. The SDR1005-471KL is slightly smaller (0.500" x 0.394" vs. 0.530" x 0.420") and has a lower profile (0.197" vs. 0.236" seated height). PCB layout and clearance requirements must be verified for the specific application.

Q: How do inductance tolerances affect circuit performance?

A: The SMP3316-473M has ±20% tolerance while the SDR1005-471KL has ±10% tolerance. Tighter tolerance in the substitute may improve circuit stability in applications sensitive to inductance variation. However, both components meet the 470 µH nominal specification.

Q: Are there temperature range limitations with the substitute?

A: The SMP3316-473M operates from -55°C to 125°C, while the SDR1005-471KL operates from -40°C to 125°C. Applications requiring operation below -40°C must use the primary component.

Q: What compliance differences exist between these components?

A: The SDR1005-471KL is ROHS3 compliant, while the SMP3316-473M is not applicable for RoHS classification. Both components are REACH unaffected and classified as EAR99 for export control purposes.