LB2012T6R8M Equivalent & Substitute Parts

Part Overview

The LB2012T6R8M is a 6.8 µH unshielded drum core wirewound inductor manufactured by Taiyo Yuden, designed for surface mount applications in the 0805 (2012 Metric) package. This component is rated for 135 mA continuous current with a DC resistance of 470mOhm and operates across the temperature range of -40°C to 105°C. The part carries a "Not For New Designs" product status, indicating that Taiyo Yuden has transitioned this model to end-of-life. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production and support requirements.

Key Parameters

Parameter	Value	Significance for Substitution
Inductance	6.8 µH	Core electrical specification; must match exactly
Inductance Tolerance	±20%	Acceptable variation range; must be equivalent or tighter
Current Rating	135 mA	Maximum continuous current; substitute must meet or exceed
DC Resistance (DCR)	470mOhm	Power dissipation and thermal characteristics; must match
Package / Case	0805 (2012 Metric)	Physical footprint and mounting compatibility; must match
Shielding	Unshielded	EMI characteristics; must match
Operating Temperature Range	-40°C ~ 105°C	Environmental performance envelope; substitute must cover or exceed
Frequency - Self Resonant	38 MHz	High-frequency behavior; must be equivalent
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement; must be maintained

Substitute Part Grouping Explanation

Substitute parts for the LB2012T6R8M are identified based on strict electrical and mechanical parameter matching. The substitution logic requires that all of the following criteria be satisfied:

Electrical Parameters (Must Match):

Inductance value: 6.8 µH
Inductance tolerance: ±20% or tighter
Current rating: 135 mA or higher
DC resistance: 470mOhm
Self-resonant frequency: 38 MHz
Operating temperature range: -40°C to 105°C or broader

Mechanical Parameters (Must Match):

Package type: 0805 (2012 Metric)
Mounting type: Surface Mount
Shielding configuration: Unshielded

Compliance Parameters (Must Match or Exceed):

RoHS3 Compliance
Moisture Sensitivity Level: 1 (Unlimited)

The LSQBA201212T6R8M meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Parameter	LB2012T6R8M (Main Part)	LSQBA201212T6R8M (Substitute)	Match Status
Manufacturer	Taiyo Yuden	Taiyo Yuden	Identical
Inductance	6.8 µH	6.8 µH	Identical
Inductance Tolerance	±20%	±20%	Identical
Current Rating (Amps)	135 mA	135 mA	Identical
DC Resistance (DCR)	470mOhm	470mOhm	Identical
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	Identical
Shielding	Unshielded	Unshielded	Identical
Operating Temperature Range	-40°C ~ 105°C	-40°C ~ 105°C	Identical
Frequency - Self Resonant	38 MHz	38 MHz	Identical
Inductance Frequency - Test	7.96 MHz	7.96 MHz	Identical
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	Identical
Height - Seated (Max)	0.057" (1.45mm)	0.057" (1.45mm)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Not For New Designs	Active	Substitute is Active

Engineering Selection Recommendations

The LSQBA201212T6R8M is the direct substitute for the LB2012T6R8M. Both components are manufactured by Taiyo Yuden and share identical electrical and mechanical specifications across all critical parameters. The key distinction is product lifecycle status: the LB2012T6R8M is designated "Not For New Designs," while the LSQBA201212T6R8M carries "Active" status, indicating ongoing manufacturing support and availability.

For applications currently using the LB2012T6R8M, transition to the LSQBA201212T6R8M is supported by complete parameter equivalence. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental performance consistency. The substitute part is available in higher inventory quantity (1044 Pcs versus 1787 Pcs for the main part), supporting sustained production requirements.

Frequently Asked Questions (FAQ)

Q: Can the LSQBA201212T6R8M be used as a direct replacement for the LB2012T6R8M in existing designs?

A: Yes. The LSQBA201212T6R8M is a direct substitute with identical inductance (6.8 µH), current rating (135 mA), DC resistance (470mOhm), package type (0805 / 2012 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 components share identical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and maximum seated height (0.057" / 1.45mm). PCB footprints and assembly processes remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LB2012T6R8M and LSQBA201212T6R8M are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental performance is equivalent.

Q: Why is the LB2012T6R8M marked "Not For New Designs"?

A: The "Not For New Designs" designation indicates that Taiyo Yuden has transitioned this part to end-of-life status. The LSQBA201212T6R8M, with "Active" status, represents the current production equivalent and is recommended for all new design work.

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

A: The LB2012T6R8M belongs to the LB series (drum core wirewound inductors), while the LSQBA201212T6R8M belongs to the LSQB series (wirewound inductors). Both series share identical electrical and mechanical specifications for this inductance value and package type.

Q: Are the self-resonant frequencies identical?

A: Yes. Both parts exhibit a self-resonant frequency of 38 MHz, ensuring equivalent high-frequency behavior and impedance characteristics across the operating bandwidth.

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