LGJ12575TS-331M1R0-H Equivalent & Substitute Parts

Part Overview

The LGJ12575TS-331M1R0-H is a 330 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 1.1 A continuous current with 340mOhm DC resistance. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part carries AEC-Q200 automotive qualification and ROHS3 compliance, making it suitable for automotive and industrial electronics requiring reliable inductance performance across the -40°C to 125°C operating range.

Substiute Parts

LGJ12575TS-331M1R0-H

TDK CorporationIn Stock: 1149LGJ12575TS-331M1R0-H Datasheet

Current PartRFQ

SLF12575T-331M1R0-H

TDK CorporationIn Stock: 3344SLF12575T-331M1R0-H Datasheet

DirectRFQ

CDRR127NP-331MC

Sumida America Components Inc.In Stock: 793CDRR127NP-331MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LGJ12575TS-331M1R0-H are qualified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH with ±20% tolerance
• Current rating: minimum 1.1 A continuous
• DC resistance: 340mOhm nominal or maximum specification
• Core material: Ferrite shielded construction
• Saturation current: minimum 1 A
• Operating temperature range: -40°C to 125°C minimum
• AEC-Q200 automotive qualification
• Surface mount nonstandard package (12.50mm x 12.50mm footprint)
• ROHS3 compliance

Acceptable Variations:

• Packaging format (Cut Tape vs. Tape & Reel) does not affect electrical compatibility
• Height variation within reasonable limits (7.50mm to 7.85mm) acceptable for PCB layout
• Product status transition (Obsolete to Active or Not For New Designs) acceptable for replacement applications
• Inductance test frequency variation (1 kHz vs. 100 kHz) does not affect substitution validity

Parameter Comparison

Engineering Selection Recommendations

CDRR127NP-331MC (Sumida America Components Inc.) is the primary recommended substitute. This part maintains identical electrical specifications to the main part (1.1 A current rating, 340mOhm DCR) and carries Active product status, ensuring long-term availability and supply chain continuity. AEC-Q200 qualification and ROHS3 compliance are maintained. The 0.35mm height increase (7.85mm vs. 7.50mm) is within acceptable PCB assembly tolerances for nonstandard packages.

SLF12575T-331M1R0-H (TDK Corporation) is a secondary substitute option. While manufactured by the same original supplier, this part is classified as Not For New Designs and exhibits a reduced current rating (1 A vs. 1.1 A) and elevated DC resistance (408mOhm Max vs. 340mOhm). This part is suitable only for applications where the 1 A rating is sufficient and where the increased resistance does not impact circuit performance. Tape & Reel packaging provides better supply availability than Cut Tape format.

Both substitute parts maintain identical inductance values, tolerance specifications, core material composition, shielding characteristics, and operating temperature ranges. Footprint compatibility is confirmed across all three parts (12.50mm x 12.50mm).

Frequently Asked Questions (FAQ)

Q: Can SLF12575T-331M1R0-H replace LGJ12575TS-331M1R0-H in all applications?

A: SLF12575T-331M1R0-H is electrically compatible only in applications where the reduced current rating (1 A vs. 1.1 A) and increased DC resistance (408mOhm Max vs. 340mOhm) do not compromise circuit performance. Circuit thermal analysis and current margin calculations are required to confirm suitability.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for manual handling and small-quantity applications. Tape & Reel (TR) packaging provides continuous reel format optimized for automated assembly equipment. Both formats contain identical electrical components; packaging selection depends on production volume and assembly methodology.

Q: Are all three parts pin-compatible?

A: Yes. All three parts are surface mount inductors with identical footprint dimensions (12.50mm x 12.50mm) and nonstandard package specifications. PCB layout modifications are not required for substitution.

Q: Does the height difference between parts affect PCB assembly?

A: The maximum height variation is 0.35mm (7.50mm to 7.85mm). This difference is within standard PCB assembly tolerances for nonstandard packages and does not require design modifications. Clearance verification with adjacent components is recommended for space-constrained layouts.

Q: Why is CDRR127NP-331MC recommended over SLF12575T-331M1R0-H?

A: CDRR127NP-331MC maintains identical electrical specifications to the original part (1.1 A current rating, 340mOhm DCR) and carries Active product status, ensuring sustained availability. SLF12575T-331M1R0-H exhibits reduced current rating and increased resistance, limiting its applicability to specific circuit requirements.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All three parts carry AEC-Q200 automotive qualification, confirming suitability for automotive and industrial applications requiring automotive-grade reliability standards.

Q: What is the impact of increased DC resistance on circuit performance?

A: DC resistance affects power dissipation and voltage drop across the inductor. SLF12575T-331M1R0-H exhibits 408mOhm maximum resistance compared to 340mOhm for the original part. The 68mOhm increase results in proportionally higher power loss at rated current. Circuit thermal analysis is required to confirm acceptable performance margins.