LLMCC451611T111RG Equivalent & Substitute Parts

Part Overview

The LLMCC451611T111RG is a 110 Ohm power line ferrite bead manufactured by Taiyo Yuden in the 1806 (4516 Metric) surface mount package. This component operates at 100 MHz impedance with a maximum current rating of 4A and is designed for electromagnetic interference (EMI) suppression in power distribution circuits. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design revisions call for equivalent performance from different product series or manufacturers.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	110 Ohms
Current Rating (Maximum)	4A
DC Resistance (Maximum)	14 mOhm
Package / Case	1806 (4516 Metric)
Operating Temperature Range	-40°C to 125°C
Filter Type	Power Line
Number of Lines	1
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LLMCC451611T111RG is determined by the following critical parameters:

Impedance Matching: The primary substitutes maintain the 110 Ohm impedance specification at 100 MHz. Secondary substitutes with 90 Ohm impedance are listed but represent a parametric deviation and are suitable only when impedance tolerance permits.

Package Compatibility: All listed substitutes use the 1806 (4516 Metric) surface mount package with identical physical dimensions (0.177" L × 0.063" W, 1.30 mm maximum height), ensuring mechanical and electrical compatibility on printed circuit boards.

Electrical Ratings: Current rating (4A maximum) and DC resistance (14 mOhm maximum) are held constant across all substitutes, maintaining thermal and power dissipation characteristics.

Thermal Performance: Operating temperature range (-40°C to 125°C) is consistent across all substitute parts.

Compliance: All substitutes maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity level.

Packaging Format: Substitutes are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats, accommodating different manufacturing and assembly requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Package Format	Product Status	Inventory (Pcs)
LLMCC451611T111RG	Taiyo Yuden	LLMC	110 Ohms	4A	14 mOhm	Tape & Reel (TR)	Active	1084
FBMJ4516HS111-T	Taiyo Yuden	FB	110 Ohms	4A	14 mOhm	Cut Tape (CT) & Digi-Reel®	Not For New Designs	16080
LSMCC451611T111RG	Taiyo Yuden	LSMC	110 Ohms	4A	14 mOhm	Cut Tape (CT) & Digi-Reel®	Active	2683
Z1806C111APWST	KEMET	Z-PWS	110 Ohms	4A	14 mOhm	Cut Tape (CT)	Obsolete	742
FBMJ4516HM900-T	Taiyo Yuden	FB	90 Ohms	4A	14 mOhm	Tape & Reel (TR)	Not For New Designs	4100
LSMCA451611T900RG	Taiyo Yuden	LSMC	90 Ohms	4A	14 mOhm	Tape & Reel (TR)	Active	3358
Z1806C900BPWST	KEMET	Z-PWS	90 Ohms	4A	14 mOhm	Cut Tape (CT)	Obsolete	3003

Engineering Selection Recommendations

Primary Substitutes (110 Ohm Impedance Match):

LSMCC451611T111RG is the preferred substitute. It maintains Active product status, identical electrical specifications, and ROHS3 compliance. The Cut Tape & Digi-Reel® packaging accommodates automated assembly processes. Inventory availability (2683 units) supports production requirements.

FBMJ4516HS111-T provides electrical equivalence with higher inventory availability (16080 units) but carries "Not For New Designs" status, limiting its use to legacy system support or existing production lines requiring continuity.

Z1806C111APWST (KEMET) matches electrical specifications but is classified as Obsolete. Use is restricted to applications where existing stock must be consumed or where cross-manufacturer qualification has been completed.

Secondary Substitutes (90 Ohm Impedance):

LSMCA451611T900RG and FBMJ4516HM900-T provide 90 Ohm impedance at 100 MHz. These parts are suitable only when circuit design permits impedance deviation from the 110 Ohm specification. LSMCA451611T900RG maintains Active status; FBMJ4516HM900-T is "Not For New Designs."

Z1806C900BPWST (KEMET) is Obsolete and should be avoided for new applications.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can LSMCC451611T111RG directly replace LLMCC451611T111RG?

A: Yes. Both parts share identical electrical specifications (110 Ohms @ 100 MHz, 4A maximum current, 14 mOhm DCR), package dimensions (1806/4516 Metric), and operating temperature range (-40°C to 125°C). The primary difference is packaging format: LSMCC uses Cut Tape & Digi-Reel® while LLMCC uses Tape & Reel. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape in reel format, suitable for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® provides components on cut tape segments with optional reel packaging, accommodating lower-volume production or mixed-component assembly processes. Both formats contain identical components with no electrical performance difference.

Q: Can I use a 90 Ohm ferrite bead instead of 110 Ohm?

A: Substitution with 90 Ohm impedance (LSMCA451611T900RG or FBMJ4516HM900-T) is possible only if circuit design specifications permit impedance deviation. The 90 Ohm parts maintain identical current rating (4A), DC resistance (14 mOhm), package dimensions, and temperature range. Circuit performance impact must be evaluated by the design engineer.

Q: Why is FBMJ4516HS111-T marked "Not For New Designs"?

A: "Not For New Designs" status indicates the manufacturer has transitioned this product line and recommends alternative parts for new applications. Existing inventory may be used for legacy system support or ongoing production of established designs. For new product development, LSMCC451611T111RG is the recommended choice.

Q: Are KEMET Z1806C parts suitable for new designs?

A: No. Both Z1806C111APWST and Z1806C900BPWST carry Obsolete status. These parts should be used only when existing stock must be consumed or when cross-manufacturer qualification with KEMET has been completed for specific applications. For new designs, Taiyo Yuden LSMC or LLMC series parts are recommended.

Q: What is the significance of MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This eliminates the need for desiccant packaging, dry storage cabinets, or bake-out procedures before assembly, simplifying supply chain and manufacturing logistics.

Q: Do all substitutes meet ROHS3 compliance?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with regulatory requirements for restricted hazardous substances in electronic equipment.

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