3483-470M Equivalent & Substitute Parts

Part Overview

The 3483-470M is a 47 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 590 mA with a maximum DC resistance of 410 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -20°C to 80°C and is mounted as a surface mount device in a nonstandard package configuration.

Substiute Parts

3483-470M

API Delevan Inc.In Stock: 9763483-470M Datasheet

Current PartRFQ

SDR0603-470KL

Bourns Inc.In Stock: 45418SDR0603-470KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3483-470M is determined by the following critical parameters:

• Inductance Value: Must be 47 µH to maintain circuit functionality
• Current Rating: Substitute must support minimum 590 mA; higher ratings are acceptable
• DC Resistance: Must not exceed 410 mOhm to preserve circuit performance characteristics
• Core Type & Shielding: Ferrite core, unshielded configuration must be maintained
• Mounting Type: Surface mount requirement must be preserved
• Temperature Range: Operating range must encompass or exceed -20°C ~ 80°C

The SDR0603-470KL from Bourns Inc. meets these substitution criteria with equivalent inductance, compatible current handling, and matching core/shielding specifications. However, the substitute exhibits higher DC resistance and operates across an extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The SDR0603-470KL serves as an active substitute for the obsolete 3483-470M. Selection should account for the following factors:

Compliance Considerations: The SDR0603-470KL is ROHS3 compliant, whereas the 3483-470M is RoHS non-compliant. This distinction is material for applications subject to RoHS regulations.

Current Handling: The substitute part is rated for 520 mA, which is 70 mA lower than the original 590 mA rating. Circuit designs operating near the original maximum current specification require verification that the reduced margin remains acceptable.

DC Resistance: The SDR0603-470KL exhibits 550 mOhm maximum DCR compared to 410 mOhm for the original part. This 140 mOhm increase results in higher power dissipation and should be evaluated in power-sensitive applications.

Temperature Range: The substitute operates across -40°C to 125°C, providing extended coverage beyond the original -20°C to 80°C specification.

Inductance Tolerance: The SDR0603-470KL offers tighter tolerance (±10%) compared to the original (±20%), which may benefit circuit performance in applications sensitive to inductance variation.

Frequently Asked Questions (FAQ)

Q: Can the SDR0603-470KL directly replace the 3483-470M in all applications?

A: Direct substitution is possible when circuit design margins accommodate the reduced current rating (520 mA vs. 590 mA) and increased DC resistance (550 mOhm vs. 410 mOhm). Applications operating at or near the original maximum current specification require circuit analysis to confirm compatibility.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The 140 mOhm increase in maximum DCR results in proportionally higher resistive losses. In circuits where the inductor carries significant current, this translates to increased power dissipation and heat generation. Calculate actual losses using I²R to determine if thermal management is affected.

Q: Does the improved RoHS compliance of the substitute affect electrical performance?

A: RoHS compliance status reflects manufacturing process and material composition but does not alter the electrical characteristics of the inductor. The SDR0603-470KL maintains equivalent inductance, core material, and shielding configuration.

Q: Are there package or footprint differences between these parts?

A: Both parts are surface mount inductors in nonstandard packages. The 3483-470M measures 0.287" × 0.287" × 0.138" (7.30mm × 7.30mm × 4.60mm), while the SDR0603-470KL measures 0.228" × 0.228" × 0.154" (5.80mm × 5.80mm × 3.90mm). Physical dimensions differ; PCB layout verification is required before substitution.

Q: What is the significance of the inductance tolerance difference?

A: The substitute part offers ±10% tolerance versus ±20% for the original. Tighter tolerance reduces inductance variation across the production batch, which benefits circuits where inductance precision affects performance. This is an advantage in most applications.

Q: Can the extended temperature range of the substitute cause compatibility issues?

A: The SDR0603-470KL operates from -40°C to 125°C, exceeding the original -20°C to 80°C range. This extended capability presents no compatibility issues; it provides additional operational margin for applications subject to wider temperature extremes.