LB2012T101K Equivalent & Substitute Parts

Part Overview

The LB2012T101K is a 100 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 45 mA continuous current with 7 Ohm DC resistance in a 0805 (2012 Metric) surface mount package. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary for ongoing support of existing designs, inventory management, and procurement of functionally compatible alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

LB2012T101K

Taiyo YudenIn Stock: 2117LB2012T101K Datasheet

Current PartRFQ

LSQBA201212T101K

Taiyo YudenIn Stock: 1021LSQBA201212T101K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LB2012T101K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 100 µH (±10% tolerance)
• Current rating: 45 mA minimum
• DC resistance: 7 Ohm
• Self-resonant frequency: 8 MHz
• Operating temperature range: -40°C ~ 105°C

Mechanical Parameters:

• Package type: 0805 (2012 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Maximum seated height: 0.057" (1.45mm)

Compliance Parameters:

• RoHS3 compliance
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH status: REACH Unaffected

The substitute part LSQBA201212T101K meets all electrical, mechanical, and compliance requirements for direct substitution. The primary distinction is the product status transition from "Not For New Designs" to "Active," indicating continued manufacturer support and availability.

Parameter Comparison

Engineering Selection Recommendations

The LSQBA201212T101K is a direct electrical and mechanical equivalent to the LB2012T101K. All critical parameters—inductance, current rating, DC resistance, package dimensions, and operating temperature range—are identical. Both components maintain ROHS3 compliance and REACH unaffected status.

The primary advantage of selecting LSQBA201212T101K is its "Active" product status, ensuring continued manufacturer support, long-term availability, and supply chain reliability. The LB2012T101K, designated "Not For New Designs," may face inventory depletion and reduced manufacturing priority.

For applications currently using LB2012T101K, the LSQBA201212T101K provides seamless substitution without circuit redesign or performance degradation. The ferrite core material specification in the substitute part does not alter the electrical performance within the stated parameters.

Frequently Asked Questions (FAQ)

Q: Can LSQBA201212T101K be used as a direct replacement for LB2012T101K in existing designs?

A: Yes. Both components share identical electrical specifications (100 µH inductance, 45 mA current rating, 7 Ohm DCR), mechanical dimensions (0805 package), and operating temperature range (-40°C ~ 105°C). Pin-to-pin and footprint compatibility is complete.

Q: What is the difference between the LB and LSQB series designations?

A: The LB2012T101K belongs to the LB series and is classified as "Not For New Designs." The LSQBA201212T101K belongs to the LSQB series and maintains "Active" product status. Both are manufactured by Taiyo Yuden and meet identical electrical and mechanical specifications for this inductance value and package type.

Q: Are there compliance or certification differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is equivalent.

Q: Does the ferrite core material in LSQBA201212T101K affect performance compared to the LB2012T101K?

A: The core material is not specified for the LB2012T101K in the provided data. Both components deliver identical electrical performance within the stated parameters: 100 µH inductance, 8 MHz self-resonant frequency, and 7 Ohm DC resistance. The ferrite core in the substitute part does not alter these specifications.

Q: What inventory considerations apply to these parts?

A: LB2012T101K has 2094 pieces in stock. LSQBA201212T101K has 964 pieces in stock. For long-term procurement, LSQBA201212T101K is recommended due to its active product status and continued manufacturing support.

Q: Are there any package or footprint differences?

A: No. Both components use the 0805 (2012 Metric) surface mount package with identical physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.057" (1.45mm). PCB footprints are interchangeable.