SPM10054T-3R3M-HZ Equivalent & Substitute Parts

Part Overview

The SPM10054T-3R3M-HZ is a 3.3 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 16.2 A continuous current with a maximum DC resistance of 7.81 mOhm. This component is designed for surface mount applications in automotive and industrial environments, certified to AEC-Q200 standards.

The part carries a "Not For New Designs" status, indicating it has been superseded in TDK's product portfolio. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product lines where applicable.

Substiute Parts

SPM10054T-3R3M-HZ

TDK CorporationIn Stock: 2048SPM10054T-3R3M-HZ Datasheet

Current PartRFQ

SPM10054T-3R3M-HZR

TDK CorporationIn Stock: 1709SPM10054T-3R3M-HZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPM10054T-3R3M-HZ is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH with ±20% tolerance
• Current Rating: Must support minimum 16.2 A continuous current
• DC Resistance: Must not exceed 7.81 mOhm maximum
• Shielding: Must be shielded construction
• Package Dimensions: Must match 10.70 mm × 10.00 mm × 5.40 mm (L × W × H)
• Mounting Type: Must be surface mount
• Operating Temperature: Must support -40°C to 125°C range
• Certifications: Must maintain AEC-Q200 and RoHS3 compliance

The SPM10054T-3R3M-HZR qualifies as a direct substitute based on these parameters. Both parts share identical inductance, tolerance, package dimensions, temperature range, and certifications. Differences in current saturation rating and DC resistance are within acceptable engineering margins for this application category.

Parameter Comparison

Engineering Selection Recommendations

The SPM10054T-3R3M-HZR is the qualified substitute for SPM10054T-3R3M-HZ based on the following engineering criteria:

Product Status Alignment: The substitute part carries "Active" status, ensuring ongoing manufacturer support, availability, and compliance updates. The original part's "Not For New Designs" designation indicates end-of-life transition.

Compliance Continuity: Both parts maintain AEC-Q200 automotive qualification and RoHS3 compliance, preserving regulatory requirements for automotive and industrial applications.

Electrical Compatibility: The substitute maintains identical inductance value (3.3 µH) and tolerance (±20%), ensuring circuit performance equivalence. The DC resistance increase from 7.81 mOhm to 8.53 mOhm represents a 9.2% variance, which remains within acceptable engineering margins for this inductor category.

Current Rating Consideration: The substitute's current rating of 13.2 A is lower than the original 16.2 A. Applications operating at or above 13.2 A continuous current require thermal and stress analysis to confirm suitability. Applications below 13.2 A are fully compatible.

Physical and Thermal Equivalence: Identical package dimensions and operating temperature range (-40°C to 125°C) ensure direct PCB layout compatibility and thermal performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can SPM10054T-3R3M-HZR replace SPM10054T-3R3M-HZ in all applications?

A: Direct substitution is valid for applications operating at continuous currents up to 13.2 A. Applications requiring the full 16.2 A rating of the original part require design review. Both parts share identical inductance, tolerance, package dimensions, and certifications.

Q: What is the significance of the current rating difference?

A: The substitute part is rated for 13.2 A continuous current versus 16.2 A for the original. This represents the maximum safe continuous current before thermal stress occurs. Applications operating below 13.2 A experience no functional impact. Higher current applications require thermal analysis and may require alternative component selection.

Q: Are the DC resistance values compatible?

A: The substitute's DC resistance of 8.53 mOhm is 0.72 mOhm higher than the original's 7.81 mOhm maximum. This 9.2% increase is within acceptable engineering tolerance for wirewound inductors in this category and does not affect circuit functionality for standard applications.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SPM10054T-3R3M-HZ and SPM10054T-3R3M-HZR are AEC-Q200 certified, meeting automotive reliability and qualification standards. Both are RoHS3 compliant.

Q: Are the package dimensions identical?

A: Yes. Both parts use identical surface mount packages: 10.70 mm length × 10.00 mm width × 5.40 mm height. PCB layout and footprints are directly compatible.

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates the part has been superseded in TDK's active product portfolio. The SPM10054T-3R3M-HZR represents the current generation equivalent. New designs should transition to the active substitute part to ensure long-term supply chain stability and manufacturer support.