Connector-Specific Product Page

OS2 LC to LC Patch Cord and LC Fiber Patch Cords for Bulk Orders

An OS2 LC to LC patch cord is a singlemode jumper with an LC connector on both ends, built on ITU-T G.652.D or bend-insensitive G.657 fiber and usually sheathed in yellow. Most are duplex, UPC-polished and wired A-to-B, linking SFP/SFP+ or QSFP ports, patch panels and ODFs. Lumafyn quotes OS2 LC-LC cords in bulk together with LC to SC, LC APC, OM3/OM4 and LC uniboot lines, with length, label and packing set per line.

Send LC Patch Cord RFQ Line Schedule Guide

Last reviewed 2026-11-10 by the Lumafyn team · Orders are produced in our own factory in China.

OS2 LC to LC duplex patch cord and LC uniboot cable assembly

LC Patch Cord Overview

LC fiber patch cords are compact duplex or simplex cable assemblies used to connect optical modules, ODF panels, patch panels, media converters and access network equipment. The LC interface (IEC 61754-20) uses a 1.25 mm ferrule, half the size of SC, which is why it dominates transceiver ports. For B2B procurement, the most important work is not only naming the connector. The RFQ should also define polish, fiber mode, cable diameter, jacket, color, length and packing, so every line item can be quoted cleanly.

Lumafyn structures LC patch cord requests around line schedules. This helps distributors, telecom contractors and data center cabling teams separate LC UPC, LC APC, LC to LC, LC to SC, LC uniboot and custom label requirements before purchasing.

Common LC Patch Cord Types

OS2 LC UPC to LC UPC singlemode duplex patch cord for ODF, patch panel and telecom equipment links.
LC APC to LC APC patch cord for access network and optical distribution requirements where APC is specified.
LC to SC fiber patch cord for mixed-panel connections and equipment-to-panel conversion.
LC uniboot patch cord for high-density cabling where reduced cable bulk and cleaner routing are needed.
OM3 and OM4 multimode LC patch cable for data center or enterprise network cabinets.

Hands assembling fiber connectors at a workbench, with blue trays of black and yellow connector parts and coils of aqua patch cord — In-house production workflow reference for connector assembly, color-coded cable handling and custom line-schedule preparation.

Applications

Telecom room patching between ODF, distribution frames and transmission equipment.
Data center cabinet links between panels, cassettes, modules and optical transceivers.
FTTH and FTTx access network distribution, terminal box and optical equipment patching.
Distributor replenishment orders with repeated connector, color, label and packing needs.

Related RFQ Pages

RFQ Specification Table

Connector ALC UPC / LC APC

Connector BLC / SC / FC / ST or project requirement

Fiber ModeSinglemode OS2 / multimode OM3 / OM4

Fiber TypeG652D / G657A1 / G657A2 / OM3 / OM4

Cable Diameter0.9mm / 1.6mm / 2.0mm / 3.0mm

JacketPVC / LSZH / OFNR or specified requirement

PolarityDuplex A-to-B, or A-to-A on request

Length1m, 2m, 3m, 5m, 10m or custom schedule

ColorYellow, aqua, orange, violet or project color code

PackingBulk packing, individual bag, barcode label or private-label request

Optical valuesConfirmed per line in your quotation

Prepare a quote-ready LC patch cord request

Send one line per connector pair and length. Include polish, fiber mode, jacket, color, label, quantity and destination country.

Send RFQ

OS2 LC to LC

OS2 LC to LC Patch Cord: Fields and Comparison

Most LC-LC orders go wrong on three fields: polish, polarity and fiber mode. Fix them per line before price is discussed.

What to specify on an OS2 LC to LC line
Field	Common options	Why it matters
Polish	UPC / APC	APC and UPC must not be mated
Fiber	G.652.D / G.657.A1 / G.657.A2	G.657 tolerates tighter bends in cabinets and trays
Structure	Duplex zip-cord / simplex / uniboot	Uniboot saves space at dense ports
Cable diameter	1.6 / 2.0 / 3.0 mm (0.9 mm for simplex)	Affects routing density and pull strength
Jacket	PVC / LSZH / OFNR or specified	Building codes differ by country
Polarity	A-to-B (standard) or A-to-A	Wrong polarity means no link
Length and tolerance	1, 2, 3, 5, 10 m or custom	State the tolerance you need; production tolerance is confirmed in the quote

OS2 vs OM4 LC to LC patch cords
Field	OS2 singlemode LC-LC	OM4 multimode LC-LC
Fiber	9/125 µm, G.652.D or G.657.A1/A2	50/125 µm laser-optimized
Usual jacket color	Yellow	Aqua (violet in some markets)
Typical optics	LR, ER, CWDM/DWDM and other singlemode transceivers	SR transceivers (850 nm VCSEL)
Reach context	Kilometres, set by the transceiver	IEEE 802.3 10GBASE-SR up to 400 m
Polish	UPC (blue LC) or APC (green LC)	UPC (multimode is not APC)
Do not mix with	Multimode cords or ports	Singlemode cords or ports

Buyer Checklist

What to include before requesting price

Clear LC patch cord specifications reduce back-and-forth and help the quotation team confirm whether the request is a stock-style replenishment order, a custom assembly order or a private-label packing order.

Connector and polish

Separate LC UPC, LC APC and hybrid connector rows. Do not mix UPC and APC in one line unless it is intentionally a hybrid assembly.

Fiber mode and jacket

List OS2, OM3 or OM4, then add PVC, LSZH, OFNR or project-required jacket information when the buyer already has a standard.

Length and quantity

Use a line schedule such as 1m x 100 pcs, 3m x 200 pcs and 5m x 50 pcs instead of writing one broad quantity.

Label and packing

For distributor or OEM projects, include barcode label, private label, individual bag, cable marker or carton marking requirements.

Testing

Request insertion loss, return loss and end-face inspection records if you need them; the limits are agreed in the quotation. TIA-568.3-D allows at most 0.75 dB per mated pair as a design ceiling.

Inspect and clean

LC end faces are small and easy to contaminate. Inspect to IEC 61300-3-35 and keep dust caps on until the cord is plugged in.

FAQ

LC fiber patch cord buying questions

What is an OS2 LC to LC patch cord used for?

It connects singlemode equipment and panels that both use LC ports: transceivers in switches and routers, LC patch panels, ODFs and media converters. OS2 is the ISO/IEC 11801 category for singlemode cabled fiber such as G.652.D.

What is the difference between LC UPC and LC APC patch cords?

UPC and APC refer to connector polish. The correct option should match the equipment, ODF or project specification. If the buyer is unsure, the RFQ should include the application and existing panel type for confirmation.

Should a duplex LC to LC cord be A-to-B?

For standard duplex patching, ANSI/TIA-568.3-D specifies A-to-B patch cords so transmit on one end reaches receive on the other. Order A-to-A only when your link design calls for it, and state it on the line.

Can one order include LC to LC and LC to SC patch cords?

Yes. List each connector pair and length as a separate line item so the quotation can separate connector type, polish and quantity.

Is LC uniboot useful for data center cabling?

LC uniboot can help reduce cable bulk and make routing cleaner in high-density panels or cabinets. Buyers should also confirm polarity and label requirements. See LC uniboot patch cords.

What information speeds up quotation?

Connector pair, polish, fiber mode, cable diameter, jacket, length, quantity, packing, label request and destination country are the key fields.

Standards referenced on this page

ISO/IEC 11801-1 – generic cabling; defines the OS2, OM3 and OM4 cabled-fiber categories.
ITU-T G.652 – characteristics of singlemode fiber (G.652.D is the common low-water-peak grade).
ITU-T G.657 – bend-insensitive singlemode fiber (A1 and A2 categories).
ANSI/TIA-568.3-D – optical fiber cabling components: maximum 0.75 dB insertion loss per mated connector pair; minimum return loss 20 dB multimode and 35 dB singlemode; duplex A-to-B and array polarity methods A, B and C.
IEC 61754-20 – LC connector interface; IEC 61754-4 – SC connector interface.
IEEE 802.3 – Ethernet physical layers, including multimode reach for 10GBASE-SR.
IEC 61300-3-35 – visual inspection of fiber optic connector end faces.

Standard values are industry minimums or definitions, not Lumafyn product data. Insertion loss, return loss, length tolerance, MOQ and lead time for your order are confirmed in your quotation and test records.