3/1/2023 0 Comments Lc connector![]() Still, we are going to have a regular series on STH covering fiber optic networking. This series is coming out a bit slower than I had hoped. Still, since it is highly likely that our readers will have LC devices, standardizing on that for patch panels and other components can make a lot of sense. For most of our readers, they are going to be unlikely to plug in these connectors 50 times per connector, let alone 500. From a data performance perspective, SC and LC are very similar but SC is a higher mating cycle counter. One can also utilize cassettes such as this one to put multiple LC (or SC) links over a MTP higher-density cable. Realistically, one can convert SC to LC and LC to SC without much trouble. The fact that the connector is also used in higher-end 100GbE optics, as an example, just shows that it is quite useful. With SFP+ and SFP28 being so widely used, it makes a lot of sense to standardize as much as possible on that least common denominator of a connector. There is a huge advantage to using a single connector that will fit into the optics that you are likely to find in switches, network cards, and motherboards. The LC connector fits into standard SFP+/ SFP28 form factors (SFP+ shown above.) Fiber with LC connectors can also be used in higher-end QSFP+ or QSFP28 and run 40GbE or 100GbE networking. We are going to heavily recommend LC for a lower-density connection, and here is a picture as for why, just look at the size. If you have existing SC panels, for example, then it may make sense to get at least some SC gear. ![]() Let us get to the more controversial aspect: a simple recommendation. Our Recommendation and a Simple Explanation That is why the LC duplex connectors are so popular and many people just call the duplex version of the connector the LC connector. In the fiber optic cable that you are likely to use, you will have two fiber cables one passing data in each direction. ![]() Today’s 1U 48-port 25GbE + multiple 100GbE switches would be hard to accomplish with SC connectors just due to their size.Ī quick note here, technically we are showing duplex connectors because there are two fibers. LC Connector in SFP Optic and Portīy LC connectors being half the size, optical networking could increase in density. If you do not know what a ferrule is, think of it as the structured end to a cable that forms the connector (trying for a broad definition here since ferrules are used outside of just optical cabling.) LC connectors utilize a latch to keep the connector in place. The key innovation for LC was that the ferrule is half the size of the SC connector. LC was a response to the SC connector which pre-dated and dominated the market before it. The most popular connector in the world outlived the company that made it. LC stands for “Lucent Connector” even though we have heard some people call them the little connectors. Lucent Technologies developed LC connectors. The SC connector is extremely durable, and it is very easy to just push in/on or pull out/ off. It was originally made by Nippon Telegraph and Telephone (NTT) and it is extremely popular in many industries such as telecom. It became popular in industries where companies were looking to minimize opportunities for truck rolls due to improperly installed connectors. SC was an innovative connector because it was very easy to install and performed well. You may also hear people call this the standard connector, square connector, or I know someone that calls this the stick-click connector. When we discuss SC, this is an abbreviation for Subscriber Connector. That is why we are going to focus on those. There are FC and ST connectors in this segment (often found on test and measurement gear as an example), SC and LC connectors are more popular these days, especially in smaller and data center networks. We are going to focus on the SC and LC connectors here. Many of our readers may be purchasing fiber optic cables, and want to know which connectors to use. As a result, it is usually less expensive and easier, especially in small quantities, to purchase pre-terminated fiber optic cables with connectors already attached. ![]() On the other hand, copper is cheap and easy to terminate to exact lengths in the field. Fiber Optic Networking Guide SC or LC Connectorįiber optic cables are awesome because one can transmit large amounts of data further and more efficiently at distance than with copper. In this quick guide, we are going to discuss the differences, and more importantly, have a recommendation on which you should choose. While Patrick is installing a MPO/ MTP network, which is a higher-density connector, the most basic connectors many of our readers will encounter include either the SC or LC connectors. As part of our new fiber optic guide series, we need to start addressing connectors. ![]()
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