Side-by-Side Comparison
Fiber Connectors
LC vs. SC
Comparing 2 standards across 9 specifications. 8 key differences identified.
Comparing:
LC
SC
The LC connector (Lucent Connector, TIA-604-10 / FOCIS-10) is a small form-factor (SFF) optical connector utilizing a 1.25 mm ceramic ferrule and an RJ45-style push-pull latching clip, widely used in enterprise datacenters and optical transceivers (SFP/SFP+/SFP28).
The SC connector (Subscriber Connector / Standard Connector, TIA-604-3 / FOCIS-3) is a push-pull optical fiber connector developed by NTT. Utilizing a 2.5 mm ceramic ferrule and a square molded plastic body, it is a primary standard in telecommunications and FTTH GPON/EPON installations.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Standard / FOCIS
|
TIA-604-10-B (FOCIS-10) / IEC 61754-20 | TIA-604-3-B (FOCIS-3) / IEC 61754-4 |
|
Ferrule Diameter
|
1.25 mm | 2.5 mm |
|
Ferrule Material
|
Zirconia ceramic | Zirconia ceramic |
|
Latching Mechanism
|
Push-pull with retention clip (RJ45-style) | Push-pull snap-in rectangular housing |
|
Fiber Modes Supported
|
Single-Mode (OS1/OS2) and Multi-Mode (OM1–OM5) | Single-Mode (OS2) and Multi-Mode (OM1–OM4) |
|
Typical Insertion Loss
|
0.10–0.25 dB | 0.20–0.30 dB |
|
Polish Types Available
|
UPC (Ultra Physical Contact, Blue) and APC (Angled, Green) | UPC (Blue), APC (Green–standard for FTTH PON) |
|
Duplex Clip Pitch
|
6.25 mm | — |
|
Standard Duplex Pitch
|
— | 12.7 mm |