3483-220M Equivalent & Substitute Parts

Part Overview

The 3483-220M is a 22 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 930 mA with a maximum DC resistance of 180mOhm. This surface mount component operates across the temperature range of -20°C to 80°C and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

3483-220M

API Delevan Inc.In Stock: 7453483-220M Datasheet

Current PartRFQ

SDR0603-220ML

Bourns Inc.In Stock: 1907SDR0603-220ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3483-220M is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with ±20% tolerance to maintain circuit performance
• Current Rating: The substitute must support the application's current requirements; the original part is rated at 930 mA
• DC Resistance: Maximum DCR of 180mOhm establishes the upper limit for acceptable power dissipation
• Core Material & Shielding: Ferrite unshielded drum core construction ensures electromagnetic compatibility with the original design
• Mounting Type: Surface mount configuration is required for PCB compatibility
• Temperature Range: Operating temperature specifications must align with application requirements

The SDR0603-220ML from Bourns Inc. qualifies as a substitute based on matching inductance value, core type, shielding configuration, and mounting method. However, differences in current rating, DC resistance, and temperature range must be evaluated against specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

The SDR0603-220ML is an active product with ROHS3 compliance, providing regulatory advantage over the obsolete, non-compliant 3483-220M. The substitute maintains identical inductance and tolerance specifications with matching core construction and unshielded configuration.

Critical design considerations for substitution:

• Current Derating: The SDR0603-220ML is rated at 750 mA versus the original 930 mA. Applications operating above 750 mA continuous current require thermal analysis or circuit redesign.
• DC Resistance Impact: The substitute exhibits 280mOhm maximum DCR compared to 180mOhm in the original part, resulting in increased power dissipation. Power loss differential is approximately 55% higher at rated current.
• Temperature Operating Range: The substitute supports -40°C to 125°C, exceeding the original -20°C to 80°C range and providing broader environmental compatibility.
• Regulatory Compliance: ROHS3 compliance of the substitute eliminates compliance risk associated with the non-compliant original part.

Substitution is appropriate for applications where continuous current remains below 750 mA and where the increased DC resistance is acceptable for the intended circuit function.

Frequently Asked Questions (FAQ)

Q: Can the SDR0603-220ML directly replace the 3483-220M in all applications?

A: Direct replacement is possible only when application current requirements do not exceed 750 mA continuous operation. The higher DC resistance of the substitute must be evaluated for acceptable power dissipation in the specific circuit.

Q: What is the impact of the 100mOhm increase in DC resistance?

A: At 750 mA, the SDR0603-220ML dissipates approximately 157.5 mW compared to 135 mW for the original part at 930 mA. Circuit thermal design must accommodate this additional dissipation.

Q: Are the physical dimensions compatible?

A: The 3483-220M measures 0.287" L x 0.287" W x 0.138" H (7.30mm x 7.30mm x 4.60mm). The SDR0603-220ML measures 0.228" L x 0.228" W x 0.154" H (5.80mm x 5.80mm x 3.90mm). While both are surface mount, the smaller footprint of the substitute may require PCB layout verification.

Q: Does the substitute meet regulatory requirements?

A: The SDR0603-220ML is ROHS3 compliant, whereas the original 3483-220M is RoHS non-compliant. For applications subject to RoHS regulations, the substitute provides full compliance.

Q: What is the saturation current difference?

A: The SDR0603-220ML specifies saturation current (Isat) at 960 mA. The original part does not provide saturation current specification. This parameter is critical for applications requiring inductance stability under transient current conditions.

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

A: The SDR0603-220ML operates from -40°C to 125°C versus -20°C to 80°C for the original. The extended range provides greater environmental flexibility with no negative compatibility impact for applications within the original temperature specification.