SPM10040T-6R8M-HZ Equivalent & Substitute Parts

Part Overview

The SPM10040T-6R8M-HZ is a 6.8 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 9 A continuous current with a maximum DC resistance of 23.21 mOhm. This component is designed for surface mount applications in automotive and industrial circuits requiring stable inductance performance across the -40°C to 125°C operating range. The part carries AEC-Q200 qualification and ROHS3 compliance.

The SPM10040T-6R8M-HZ is classified as "Not For New Designs," indicating that TDK has transitioned this product line. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain stability, and support existing production requirements.

Substiute Parts

SPM10040T-6R8M-HZ

TDK CorporationIn Stock: 2443SPM10040T-6R8M-HZ Datasheet

Current PartRFQ

SPM10040T-6R8M-HZR

TDK CorporationIn Stock: 1089SPM10040T-6R8M-HZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPM10040T-6R8M-HZ is determined by the following critical parameters:

• Inductance Value: Must be 6.8 µH with ±20% tolerance
• Core Material & Shielding: Metal core with shielding required
• Operating Temperature Range: Must support -40°C to 125°C minimum
• Physical Footprint: Identical nonstandard package dimensions (10.70mm x 10.00mm x 4.00mm)
• Mounting Type: Surface mount configuration
• Certifications: AEC-Q200 and ROHS3 compliance required

The SPM10040T-6R8M-HZR qualifies as a direct substitute based on matching inductance, core material, shielding, temperature range, physical dimensions, and certifications. Variations in current rating, saturation current, and DC resistance fall within acceptable engineering tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The SPM10040T-6R8M-HZR is the manufacturer-recommended substitute for the SPM10040T-6R8M-HZ. Both components maintain identical inductance values, core construction, shielding characteristics, and thermal operating ranges. Both carry AEC-Q200 automotive qualification and ROHS3 compliance, ensuring compatibility with regulated applications.

The primary distinction is product lifecycle status: the original part is designated "Not For New Designs," while the substitute is classified as "Active." This transition reflects TDK's ongoing product portfolio management and ensures long-term supply availability.

The SPM10040T-6R8M-HZR exhibits slightly reduced continuous current rating (7.1 A versus 9 A) and marginally increased DC resistance (26.4 mOhm versus 23.21 mOhm). These variations remain within acceptable engineering tolerances for equivalent component substitution in this inductance category.

Frequently Asked Questions (FAQ)

Q: Can the SPM10040T-6R8M-HZR directly replace the SPM10040T-6R8M-HZ in existing designs?

A: Yes. Both components share identical inductance values, core materials, shielding, operating temperature ranges, physical dimensions, and certifications. The substitute is the manufacturer-recommended replacement.

Q: What is the significance of the current rating difference (9 A vs. 7.1 A)?

A: The main part supports 9 A continuous current, while the substitute supports 7.1 A. Circuit designs operating below 7.1 A will function identically with either component. Designs requiring current above 7.1 A must be re-evaluated for thermal and performance implications.

Q: Are there packaging differences between these parts?

A: The main part is supplied in Tape & Reel (TR) packaging. The substitute is available in Cut Tape (CT) and Digi-Reel® packaging. Both are surface mount configurations with identical physical footprints.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the SPM10040T-6R8M-HZ and SPM10040T-6R8M-HZR carry AEC-Q200 certification, qualifying them for automotive applications.

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

A: This designation indicates that TDK has transitioned the product line. The SPM10040T-6R8M-HZR represents the active continuation of this inductance specification and should be used for new design implementations.