LB3218T2R2M Equivalent & Substitute Parts

Part Overview

The LB3218T2R2M is a 2.2 µH unshielded drum core wirewound inductor manufactured by Taiyo Yuden, rated for 775 mA continuous current with 90mOhm DC resistance. This component is housed in a 1207 (3218 Metric) surface mount package and operates across the temperature range of -40°C to 105°C.

The LB3218T2R2M carries a product status designation of "Not For New Designs," indicating that Taiyo Yuden has transitioned this part to end-of-life status. Identification of equivalent and substitute parts is necessary for design continuity, inventory management, and long-term supply chain planning for existing applications utilizing this inductor.

Substiute Parts

LB3218T2R2M

Taiyo YudenIn Stock: 3305LB3218T2R2M Datasheet

Current PartRFQ

LSQBA321818T2R2M

Taiyo YudenIn Stock: 951LSQBA321818T2R2M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LB3218T2R2M is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 2.2 µH
• Inductance tolerance: ±20%
• Current rating: 775 mA minimum
• DC resistance: 90mOhm
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Parameters:

• Package / Case: 1207 (3218 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 0.126" L x 0.071" W (3.20mm x 1.80mm)
• Maximum seated height: 0.079" (2.00mm)

Environmental & Compliance Parameters:

• Operating temperature range: -40°C ~ 105°C
• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The LSQBA321818T2R2M from Taiyo Yuden meets all specified electrical, mechanical, and environmental criteria for direct substitution. The primary distinction is the product status transition from "Not For New Designs" to "Active," indicating ongoing manufacturer support and availability.

Parameter Comparison

Engineering Selection Recommendations

The LSQBA321818T2R2M is a direct functional equivalent to the LB3218T2R2M. Both components are manufactured by Taiyo Yuden and share identical electrical specifications, mechanical dimensions, and environmental operating parameters. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating.

The primary distinction between these parts is product lifecycle status. The LB3218T2R2M is designated "Not For New Designs," while the LSQBA321818T2R2M carries "Active" status. This status difference reflects manufacturer support continuity and long-term availability assurance.

For applications currently utilizing the LB3218T2R2M, the LSQBA321818T2R2M provides equivalent performance with the advantage of active manufacturer support. The transition from the LB series to the LSQB series represents a product line evolution within Taiyo Yuden's inductor portfolio, with no degradation in electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the LSQBA321818T2R2M be used as a direct replacement for the LB3218T2R2M in existing designs?

A: Yes. The LSQBA321818T2R2M meets all electrical and mechanical specifications of the LB3218T2R2M. Both components share identical inductance (2.2 µH), current rating (775 mA), DC resistance (90mOhm), package dimensions (1207 / 3218 Metric), and operating temperature range (-40°C to 105°C). No circuit modifications are required.

Q: Are there any physical differences between these two parts?

A: No. Both the LB3218T2R2M and LSQBA321818T2R2M are housed in the 1207 (3218 Metric) surface mount package with identical dimensions of 0.126" L x 0.071" W (3.20mm x 1.80mm) and maximum seated height of 0.079" (2.00mm). PCB layout and assembly processes remain unchanged.

Q: What is the significance of the product status difference?

A: The LB3218T2R2M is marked "Not For New Designs," indicating Taiyo Yuden has concluded active development and support for this part number. The LSQBA321818T2R2M carries "Active" status, confirming ongoing manufacturer support, continued production, and long-term availability. For new designs and long-term supply chain planning, the LSQBA321818T2R2M is the recommended selection.

Q: Do both parts have the same compliance certifications?

A: Yes. Both the LB3218T2R2M and LSQBA321818T2R2M are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (Unlimited). Both parts share identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: Are there any performance differences in inductance frequency testing?

A: No. Both parts are tested at 7.96 MHz and exhibit a self-resonant frequency of 68 MHz. Inductance tolerance is ±20% for both components.