3483-330M Equivalent & Substitute Parts

Part Overview

The 3483-330M is a 33 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 720 mA with a maximum DC resistance of 290mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. 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

3483-330M

API Delevan Inc.In Stock: 10573483-330M Datasheet

Current PartRFQ

SDR0603-330KL

Bourns Inc.In Stock: 2139SDR0603-330KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3483-330M is based on the following critical parameters:

• Inductance Value: 33 µH (primary matching criterion)
• Current Rating: Minimum 720 mA required for equivalent functionality
• DC Resistance: Maximum 290mOhm preferred to maintain circuit performance
• Core Type: Ferrite drum core wirewound construction
• Shielding: Unshielded configuration
• Mounting: Surface mount technology
• Temperature Range: Operating capability within or exceeding -20°C ~ 80°C

The SDR0603-330KL from Bourns Inc. meets the inductance and core type requirements. However, the substitute exhibits a lower current rating (610 mA versus 720 mA) and higher DC resistance (450mOhm versus 290mOhm), which represent deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The SDR0603-330KL is an active product with ROHS3 compliance, providing regulatory advantage over the obsolete 3483-330M. The substitute maintains identical inductance value and ferrite drum core construction. The SDR0603-330KL operates across an extended temperature range (-40°C ~ 125°C), exceeding the original specification.

Critical deviations exist in current rating and DC resistance. The SDR0603-330KL is rated for 610 mA maximum current, which is 15% lower than the 3483-330M specification of 720 mA. The DC resistance of 450mOhm exceeds the original 290mOhm maximum by 55%. These differences must be evaluated against circuit requirements and thermal management considerations in the target application.

Frequently Asked Questions (FAQ)

Q: Can the SDR0603-330KL directly replace the 3483-330M in all applications?

A: Direct replacement is not guaranteed. The substitute exhibits lower current rating (610 mA vs. 720 mA) and higher DC resistance (450mOhm vs. 290mOhm). Circuit-level analysis is required to confirm compatibility with specific current demands and thermal constraints.

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

A: The 3483-330M specifies ±20% tolerance, while the SDR0603-330KL specifies ±10%. The tighter tolerance of the substitute provides improved inductance consistency, which may benefit circuit performance in applications sensitive to inductance variation.

Q: How do the physical dimensions compare?

A: The 3483-330M measures 0.287" L x 0.287" W x 0.138" H (7.30mm x 7.30mm x 4.60mm). The SDR0603-330KL measures 0.228" L x 0.228" W x 0.154" H (5.80mm x 5.80mm x 3.90mm). The substitute is smaller in footprint but slightly taller in seated height. PCB layout verification is necessary.

Q: What are the compliance implications?

A: The 3483-330M is RoHS non-compliant. The SDR0603-330KL is ROHS3 compliant, meeting current regulatory requirements for new designs and production environments with RoHS mandates.

Q: Does the extended operating temperature range of the SDR0603-330KL provide additional design margin?

A: The SDR0603-330KL operates from -40°C to 125°C, compared to the 3483-330M range of -20°C to 80°C. This extended range provides additional thermal margin for applications operating at temperature extremes, though the original circuit design temperature requirements must be the primary consideration.