LMMCC451611T111RG Equivalent & Substitute Parts

Part Overview

The LMMCC451611T111RG is a 110 Ohm power line ferrite bead manufactured by Taiyo Yuden in the 1806 (4516 Metric) package. This component is rated for 4A maximum current with 14mOhm DC resistance and operates across -40°C to 125°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 rating.

Substitute parts become necessary when the primary part experiences supply constraints, inventory depletion, or when design flexibility permits selection from equivalent alternatives meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	110 Ohms
Current Rating (Max)	4A
DC Resistance (Max)	14mOhm
Package / Case	1806 (4516 Metric)
Operating Temperature Range	-40°C ~ 125°C
Mounting Type	Surface Mount
Physical Dimensions	0.177" L x 0.063" W (4.50mm x 1.60mm)
Height (Max)	0.051" (1.30mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Impedance @ 100 MHz: Parts must match 110 Ohms exactly for direct substitution without circuit redesign.

Current Rating (Max): All substitutes maintain 4A rating, ensuring identical thermal and current handling characteristics.

DC Resistance (Max): All substitutes maintain 14mOhm maximum, preserving power dissipation and voltage drop performance.

Package / Case: All substitutes use 1806 (4516 Metric) package, ensuring mechanical and footprint compatibility.

Operating Temperature Range: All substitutes operate -40°C to 125°C, matching thermal envelope requirements.

Mounting Type: All substitutes are Surface Mount, maintaining assembly process compatibility.

Physical Dimensions & Height: All substitutes maintain identical form factor (0.177" L x 0.063" W, 0.051" max height), ensuring PCB layout compatibility.

RoHS & MSL Compliance: All substitutes maintain ROHS3 compliance and MSL 1 rating.

Parts with differing impedance values (90 Ohms) are listed as parametric alternatives but do not qualify as direct substitutes without circuit analysis and validation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Package / Case	Operating Temperature	Product Status	Packaging Type	Inventory (Pcs)
LMMCC451611T111RG	Taiyo Yuden	LMMC	110 Ohms	4A	14mOhm	1806 (4516 Metric)	-40°C ~ 125°C	Active	Tape & Reel (TR)	1053
FBMJ4516HS111-T	Taiyo Yuden	FB	110 Ohms	4A	14mOhm	1806 (4516 Metric)	-40°C ~ 125°C	Not For New Designs	Cut Tape (CT) & Digi-Reel®	16080
LSMCC451611T111RG	Taiyo Yuden	LSMC	110 Ohms	4A	14mOhm	1806 (4516 Metric)	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®	2683
Z1806C111APWST	KEMET	Z-PWS	110 Ohms	4A	14mOhm	1806 (4516 Metric)	-40°C ~ 125°C	Obsolete	Cut Tape (CT)	742

Engineering Selection Recommendations

Active Product Status Priority: LSMCC451611T111RG and LMMCC451611T111RG maintain Active product status, ensuring long-term availability and manufacturing support. These parts are preferred for new designs and production commitments.

Not For New Designs Status: FBMJ4516HS111-T carries "Not For New Designs" status despite high inventory (16080 pcs). This designation indicates Taiyo Yuden has transitioned this series away from active development. Selection should be limited to legacy system support or when inventory constraints necessitate alternative sourcing.

Obsolete Status: Z1806C111APWST from KEMET is marked Obsolete. While 742 pcs remain in stock, this part should be selected only when existing designs require cross-manufacturer compatibility or when Active alternatives are unavailable. Obsolete status indicates no future manufacturing support.

Compliance Equivalence: All four parts maintain identical ROHS3 compliance and MSL 1 ratings, ensuring regulatory and environmental compatibility across all options.

Packaging Considerations: LMMCC451611T111RG and LSMCA451611T900RG are supplied in Tape & Reel (TR) format, suitable for high-volume automated assembly. FBMJ4516HS111-T and Z1806C111APWST are supplied in Cut Tape (CT) or Digi-Reel® formats, appropriate for lower-volume or mixed-component pick-and-place operations.

Frequently Asked Questions (FAQ)

Q: Can FBMJ4516HS111-T be used as a direct replacement for LMMCC451611T111RG?

A: Yes, from an electrical and mechanical standpoint. Both parts share identical impedance (110 Ohms @ 100 MHz), current rating (4A), DC resistance (14mOhm), package (1806), and operating temperature range (-40°C to 125°C). However, FBMJ4516HS111-T carries "Not For New Designs" status, making it unsuitable for new product development. For legacy system maintenance or when inventory constraints apply, it qualifies as a functional equivalent.

Q: What is the difference between the LMMC and LSMC series?

A: Both LMMC (LMMCC451611T111RG) and LSMC (LSMCC451611T111RG) series are manufactured by Taiyo Yuden with identical electrical specifications and package dimensions. The series designation reflects internal product line organization. Both maintain Active status. Selection between them depends on packaging preference (Tape & Reel vs. Cut Tape & Digi-Reel®) and inventory availability.

Q: Why is Z1806C111APWST marked Obsolete?

A: Obsolete status indicates KEMET has discontinued active manufacturing and support for this part. While 742 units remain available, no future production is guaranteed. This part should be selected only when cross-manufacturer qualification is required or when Active alternatives are exhausted.

Q: Are 90 Ohm ferrite beads (FBMJ4516HM900-T, LSMCA451611T900RG, Z1806C900BPWST) suitable substitutes?

A: No. These parts have 90 Ohm impedance @ 100 MHz, differing from the 110 Ohm specification of LMMCC451611T111RG. While they share identical current rating, DC resistance, package, and temperature range, the impedance difference affects circuit filtering performance. Substitution requires circuit analysis and validation by the design engineer.

Q: What packaging format should I specify for high-volume production?

A: Tape & Reel (TR) format is standard for high-volume automated assembly. LMMCC451611T111RG is supplied in TR format with 1053 pcs in stock. LSMCC451611T111RG is supplied in Cut Tape (CT) & Digi-Reel® format with 2683 pcs available. Confirm your assembly equipment compatibility before finalizing packaging selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. LMMCC451611T111RG, FBMJ4516HS111-T, LSMCC451611T111RG, and Z1806C111APWST all maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring regulatory equivalence across all options.

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