3483R-330M Equivalent & Substitute Parts

Part Overview

The 3483R-330M is a 33 µH unshielded drum core, wirewound inductor manufactured by API Delevan Inc., rated for 850 mA continuous current with a maximum DC resistance of 210 mOhm. The component is in Active product status and is currently in stock. Equivalent and substitute parts are necessary when the primary component is unavailable, when alternative packaging options are required, or when design parameters allow for acceptable variations in electrical or mechanical characteristics.

Substiute Parts

3483R-330M

API Delevan Inc.In Stock: 10543483R-330M Datasheet

Current PartRFQ

SLF7032T-330MR75-2PF

TDK CorporationIn Stock: 42508SLF7032T-330MR75-2PF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The identified substitute part SLF7032T-330MR75-2PF qualifies as an equivalent based on the following key parameters:

Matching Parameters:

• Identical inductance value: 33 µH ±20%
• Same core material: Ferrite
• Same tolerance specification: ±20%
• Identical inductance test frequency: 100 kHz
• Compatible surface mount technology: SMD mounting
• Equivalent RoHS3 compliance and MSL 1 rating

Allowable Variations:

• Current rating: 750 mA (vs. 850 mA primary) — acceptable for applications requiring ≤750 mA
• DC resistance: 192 mOhm Max (vs. 210 mOhm Max primary) — lower DCR is acceptable
• Shielding: Shielded (vs. Unshielded primary) — shielding provides EMI mitigation
• Operating temperature: -40°C ~ 105°C (vs. -20°C ~ 85°C primary) — extended range
• Packaging: Cut Tape (CT) & Digi-Reel® (vs. Tape & Reel primary)
• Physical dimensions: 7.00mm x 7.00mm x 3.40mm (minor difference from 7.20mm x 7.20mm x 3.50mm)

Parameter Comparison

Engineering Selection Recommendations

Primary Part (3483R-330M): Recommended for new designs. Active product status ensures long-term availability and supply chain support. Full compliance with ROHS3 and REACH regulations. Suitable for applications requiring 850 mA continuous current capacity and operating within the specified temperature range.

Substitute Part (SLF7032T-330MR75-2PF): The "Not For New Designs" status indicates this part is in extended support phase. Use only for legacy system maintenance, design updates, or when primary component availability is constrained. The reduced current rating of 750 mA requires design verification for applications exceeding this threshold. Shielded construction provides EMI performance benefits in noise-sensitive applications. Lower DCR reduces resistive losses. Extended operating temperature range (-40°C ~ 105°C) accommodates wider environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can SLF7032T-330MR75-2PF directly replace 3483R-330M? A: Direct substitution is valid for applications where load current does not exceed 750 mA. If your design requires the full 850 mA current capacity of the primary part, the substitute is not suitable. Electrical parameters (inductance, tolerance, frequency response) are equivalent.

Q: What is the significance of the shielding difference? A: The primary part (3483R-330M) is unshielded, while the substitute (SLF7032T-330MR75-2PF) is shielded. Shielding reduces electromagnetic interference radiation and susceptibility. Shielded inductors occupy slightly larger physical space and typically exhibit lower Q-factors. Design placement and frequency domain analysis determine whether shielding is beneficial or detrimental.

Q: How do packaging differences affect selection? A: The primary part ships in Tape & Reel (TR) format; the substitute uses Cut Tape (CT) & Digi-Reel® packaging. These differences affect incoming component preparation and handling but do not impact electrical performance or PCB assembly compatibility. Tape format selection depends on manufacturing volume and assembly equipment compatibility.

Q: Are these parts compatible with the same PCB footprint? A: Physical dimensions differ slightly (3483R-330M: 7.20mm x 7.20mm; SLF7032T-330MR75-2PF: 7.00mm x 7.00mm). Both use 2-SMD packages and surface mount technology. The substitute part is slightly smaller and will fit standard footprints designed for the primary component. Height difference (3.50mm vs. 3.40mm max) is negligible for most PCB applications.

Q: What is the impact of the lower DCR in the substitute? A: The substitute exhibits 192 mOhm maximum DCR compared to 210 mOhm for the primary part. Lower DCR results in reduced resistive heating and improved efficiency. This is a favorable characteristic and does not create compatibility issues.

Q: Why is the substitute marked "Not For New Designs"? A: Product lifecycle status reflects manufacturer discontinuation strategy. Existing inventory remains available, but manufacturers do not guarantee long-term supply for "Not For New Designs" components. Use this part for legacy system support or temporary supply solutions only.