The TE Connectivity 3-2120871-1 is a duplex LC-to-LC multimode fiber coupler, designed for panel-mount installations where a fixed optical pass-through is needed between two duplex LC patch cords. Both ends are LC receptacle interfaces, so it couples two LC connectors directly — no adapter conversion. The beige housing signals multimode compatibility per TIA-568 color coding; this coupler will not work with singlemode fiber without significant insertion loss. Mounting is via a panel flange with snap-in retention — drops into a rectangular cutout and locks without hardware. The duplex configuration routes two fibers (Tx and Rx) through a single housing, common in duplex patch panels.
TE 3-2120871-1 LC Duplex Multimode Fiber Coupler, Obsolete
MPN3-2120871-1
Obsolete
TE Connectivity, LC duplex multimode fiber coupler, 3-2120871-1, panel mount flange snap-in, duplex, beige, tray pack.
$11.9400Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Coupler |
| Mounting | Panel Mount, Flange; Snap-In |
| Color | Beige |
| Mode | Multimode |
| Package | Tray |
| Simplex (Duplex) | Duplex |
| Convert to (Adapter end) | LC Receptacle |
| Convert from (Adapter end) | LC Receptacle |
Product details
Frequently asked questions
Is 3-2120871-1 obsolete?
Yes, the TE Connectivity 3-2120871-1 carries an Obsolete lifecycle status — no longer manufactured or supported by the factory.