LMXS1212M330HTAS Equivalent & Substitute Parts

Part Overview

The LMXS1212M330HTAS is a 33 µH shielded drum core, wirewound inductor manufactured by KYOCERA AVX, rated for 2.7 A continuous current with a maximum DC resistance of 97 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is ROHS3 compliant.

The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, production continuity, and component sourcing. Substitute parts must maintain the same inductance value, core shielding characteristics, and operating temperature range while meeting or exceeding the electrical performance requirements of the original specification.

Substiute Parts

LMXS1212M330HTAS

KYOCERA AVXIn Stock: 764LMXS1212M330HTAS Datasheet

Current PartRFQ

NS12555T330MN

Taiyo YudenIn Stock: 2208NS12555T330MN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LMXS1212M330HTAS is determined by the following critical parameters:

• Inductance Value: Must be 33 µH with ±20% tolerance
• Current Rating: Must meet or exceed 2.7 A
• DC Resistance: Must not exceed 97 mOhm
• Core Material & Shielding: Must be ferrite-based shielded drum core construction
• Mounting Type: Must be surface mount compatible
• Package Footprint: Must fit within 12.50mm x 12.50mm x 4.50mm maximum dimensions
• Operating Temperature Range: Must support -40°C to 125°C
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The NS12555T330MN from Taiyo Yuden meets all substitution criteria, offering superior electrical performance with higher current rating (3.16 A) and lower DC resistance (49.8 mOhm), while maintaining identical inductance, core type, shielding, and temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

The NS12555T330MN is a qualified substitute for the LMXS1212M330HTAS based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical inductance values (33 µH) and tolerance specifications (±20%) at the standard test frequency of 100 kHz. The substitute part exceeds the current rating requirement with 3.16 A versus 2.7 A, and provides superior DC resistance performance at 49.8 mOhm compared to 97 mOhm maximum.

Physical Compatibility: Both parts share identical footprint dimensions (12.50mm x 12.50mm) and are surface mount compatible. The substitute exhibits a maximum seated height of 5.85mm versus 4.50mm for the original part. PCB layout verification is required to confirm clearance compatibility in height-constrained applications.

Compliance & Certification: Both components are ROHS3 compliant and carry MSL 1 (unlimited moisture sensitivity) ratings, ensuring equivalent environmental and regulatory compliance for industrial applications.

Product Status Consideration: The original part is classified as obsolete, while the substitute is designated "Not For New Designs." For production continuity and long-term sourcing stability, evaluation of actively supported alternatives from current product lines is recommended for new design implementations.

Frequently Asked Questions (FAQ)

Q: Can the NS12555T330MN directly replace the LMXS1212M330HTAS in existing designs?

A: Yes, from an electrical and functional standpoint. Both components provide 33 µH inductance with identical tolerance and operating temperature specifications. The substitute offers improved current handling and lower DC resistance. However, the increased maximum height (5.85mm vs. 4.50mm) requires verification of PCB clearance in space-constrained layouts.

Q: What are the key differences between these two parts?

A: The primary differences are DC resistance (49.8 mOhm vs. 97 mOhm), current rating (3.16 A vs. 2.7 A), maximum seated height (5.85mm vs. 4.50mm), and manufacturer (Taiyo Yuden vs. KYOCERA AVX). Electrical performance is equivalent at the specified inductance and test frequency.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both parts maintain ROHS3 compliance and MSL 1 ratings. Environmental and regulatory compliance is equivalent.

Q: Why is the original part marked as obsolete?

A: Obsolescence indicates the part is no longer in active production. The substitute from Taiyo Yuden provides equivalent functionality with enhanced electrical performance and represents a viable sourcing alternative.

Q: What should be verified before implementing the substitute in production?

A: Confirm PCB layout clearance for the increased maximum height of 5.85mm. Verify that the improved DC resistance and current rating do not introduce unintended circuit behavior changes. Validate thermal performance in the target application environment.