L0805C100MPWST Equivalent & Substitute Parts

Part Overview

The L0805C100MPWST is a 10 µH unshielded drum core wirewound inductor manufactured by KEMET in the 0805 (2012 Metric) surface mount package. This component is rated for 100 mA continuous current with a DC resistance of 700 mOhm and operates across the temperature range of -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

L0805C100MPWST

KEMETIn Stock: 2473L0805C100MPWST Datasheet

Current PartRFQ

BRL2012T100M

Taiyo YudenIn Stock: 51116BRL2012T100M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L0805C100MPWST is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 10 µH
• Package / Case: 0805 (2012 Metric)
• Core type: Drum core, wirewound with ferrite material
• Shielding configuration: Unshielded
• Tolerance: ±20%
• Operating temperature range: -40°C ~ 105°C
• Mounting type: Surface mount

Flexible Parameters (allowing substitution with higher ratings):

• Current rating: Substitute must equal or exceed 100 mA
• DC resistance: Substitute may vary within circuit design constraints
• Self-resonant frequency: Minor variations acceptable within application bandwidth

The BRL2012T100M from Taiyo Yuden meets all mandatory matching criteria and provides enhanced current handling capability (330 mA versus 100 mA), making it suitable as a direct substitute where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

The BRL2012T100M is a qualified substitute for the L0805C100MPWST based on the following factors:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment in applications subject to environmental restrictions.

Physical and Electrical Compatibility: The substitute part shares identical inductance (10 µH), tolerance (±20%), package dimensions (0805 / 2012 Metric), and operating temperature range (-40°C ~ 105°C). The physical footprint is identical, enabling direct PCB layout compatibility.

Current Handling: The BRL2012T100M provides a current rating of 330 mA with a saturation current of 270 mA, exceeding the original part's 100 mA specification. This enhanced capability accommodates applications requiring higher current margins without circuit redesign.

DC Resistance Consideration: The substitute exhibits higher DC resistance (1.105 Ohm Max versus 700 mOhm). Circuit designers must evaluate power dissipation impact in current-limited applications. The increased resistance results in higher I²R losses at equivalent current levels.

Product Status: The original L0805C100MPWST is classified as obsolete, while the BRL2012T100M is marked as not for new designs. For new product development, alternative sources should be evaluated. For legacy system support and maintenance, the BRL2012T100M provides functional continuity.

Frequently Asked Questions (FAQ)

Q: Can the BRL2012T100M be used as a direct replacement for the L0805C100MPWST?

A: Yes, the BRL2012T100M is electrically and mechanically compatible. Both parts share identical inductance (10 µH), tolerance (±20%), package (0805 / 2012 Metric), and operating temperature range. The substitute provides higher current capability (330 mA versus 100 mA) and identical PCB footprint, enabling direct substitution without layout modification.

Q: What is the impact of the higher DC resistance in the BRL2012T100M?

A: The BRL2012T100M exhibits 1.105 Ohm maximum DC resistance compared to 700 mOhm in the original part. At the original design current of 100 mA, this results in approximately 110.5 mW additional power dissipation in the substitute versus 7 mW in the original. Circuit thermal analysis is required for applications sensitive to inductor power loss.

Q: Are both parts suitable for new product designs?

A: Neither part is recommended for new designs. The L0805C100MPWST is obsolete, and the BRL2012T100M is marked as not for new designs. For new product development, current production alternatives from active manufacturers should be selected.

Q: Do the parts have identical physical dimensions?

A: The parts share identical length and width (0.079" L x 0.049" W / 2.00mm x 1.25mm). The BRL2012T100M has a lower seated height (0.039" / 1.00mm) compared to the L0805C100MPWST (0.057" / 1.45mm). This dimensional difference may affect clearance in space-constrained applications but does not prevent substitution.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by inductance value (10 µH), package type (0805 / 2012 Metric), core material (ferrite drum core wirewound), shielding configuration (unshielded), tolerance (±20%), and operating temperature range (-40°C ~ 105°C). The substitute must meet or exceed the original current rating and maintain compatibility with the application's frequency and thermal requirements.

Q: Are there compliance differences between the parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance differentiation exists between the L0805C100MPWST and BRL2012T100M for applications subject to these regulatory frameworks.