Ethernet LAN cables can come in two different types – Crossover or Straight through. Most modern communications equipment can auto sense which type you are using, but some still need the correct cable pinout. The following are the pinouts for the RJ45 connectors so you can check which one you have or make up your own. It doesn’t matter if you are making up some Cat5e, Cat6 and Cat7 cables the pinout is always the same for Ethernet cables.
Straight Through LAN Cable Pinout
Straight through LAN cables are the most common and the pinout is the same if they are Cat5e, Cat6 or Cat 7. The different types of cables (category or cat) offer increasingly faster transmit and receive speeds, this is achieved by increasing the wire twists, better shielding, drain wire and increased wire diameter.
There are two different pinout standards used worldwide and depending on your location will determine which one you should use. An easy way to remember the two different RJ45 connector pinouts is T568A is used in America and Asia and the T568B is used in Britain(UK) and Europe. The different pinouts will still work if you mix them up.
PVC cable jacket. RJ-45 male connectors, 350 MHz, 4-pair 24 AWG stranded copper; labeled as “Crossover” on both ends. Can support 10 / 100 / 1000 Mbps; exceeds Category 5e cable specifications. 10’ (3.05 m) $11.00 C5E-STPOR-C10 Orange $11.00. Several RJ-45 connectors. For best results, we recommend using a quality ratcheting tool such as the popular IDEAL Telemaster™ Tool for cutting and terminating RJ-45 plugs. Most crimp tools have two blades: one designed to cut through a cable completely and the other designed to help remove the cable’s outer jacket. RJ-45 (DATA) Plug Wiring T-568B. Figure 2 is the wiring scheme for the plug side of an RJ-45 connector in accordance with T-568B standards. The T-568B standard is the most commonly used. The wiring diagram is shown with the 'hook clip' on the underside. The wall jack may be wired in a different sequence because the wires may be.
Rj45 Color Code Pdf
T-568A – Most commonly used in the USA and Asia – Just think A for America
T-568B – Britain (UK) and Europe
RJ45 Pinout for a LAN Cable
Pin 1 → White and Green (Transmit +) wire
Pin 2 → Green (Transmit -) wire
Pin 3 → White and Orange (Receive +) wire
Pin 4 → Blue wire
Pin 5 → White and Blue wire
Pin 6 → Orange (Receive -) wire
Pin 7 → White and Brown wire
Pin 8 → Brown wire
Remember that Pin 1 is on the left hand side of the RJ45 connector with the clip at the rear.
Rj45 Pinout Diagram Pdf
Crossover Ethernet Cable
Crossover Ethernet cables are used to connect two devices of the same type together. Like you want to connect two routers or two PCs. Most modern IT equipment can auto detect that a crossover needs to be made and makes changes to the signal, this is called MDI-X. A crossover LAN cable will connect the receive at one end to the transmit at the other. Care must be taken to clearly identify a crossover cable so it is not used by mistake as this may cause network outages. These cables are sometimes made with cable that has a red outer sheath.
RJ45 Pinout for a Crossover LAN Cable
Pin 1 ← White and Green wire → Pin 3
Pin 2 ← Green wire → Pin 6
Pin 3 ← White and Orange wire → Pin 1
Pin 4 ← Blue wire → Pin 4
Pin 5 ← White and blue wire → Pin 5
Pin 6 ← Orange wire → Pin 2
Pin 7 ← White and Brown wire → Pin 7
Pin 8 ← Brown wire → Pin 8
How to Crimp a RJ45 Ethernet Cable
Follow these steps to make sure you make the perfectly crimped RJ45 connector:
Trim the outer sheath back about 10mm to expose the inner conductors.
Trim off any nylon strands or wire guides
Straighten the wires
Sort them out to the correct colour codes for the pinout
Snip the wires so they are all the same length
Push the wires in to the connector
Make sure the outer sheath in inside the RJ45 crimp
Crimp the connector
Test the Ethernet cable
What is the Maximum Length of a Ethernet Cable?
The recommended maximum length for any structured cabling is 100m. This includes 5m of patch cables at either end of the cable run so the actual distance for the fixed cabling is 90m. Anything over this distance then you will start to introduce interference and losses on the cable and this will be seen as errors, dropped traffic packets and reduced throughput.
Structured Cabling = 90m
Rj 45 Wiring Standard
LAN Patch Cables = 2 x 5m
It’s good installation practice to keep the cable runs as short as possible and not to leave unnecessary excessive service loops of cable.
What pins does Ethernet use?
An Ethernet cable RJ45 connector has 8 pins. Pins 1 & 2 (green) and pins 3 & 6 (orange) are used for data communications while pins 4 & 5 (blue) and pins 7 & 8 (brown) are not used.
Rj45 Connector Pinout Pdf
How many pins does Ethernet use in a RJ45 connector?
An Ethernet cables uses a RJ45 connector that has 8 pins. Pin 1 is on the left hand side while holding the connector with the tab facing away from you.
What is the maximum length of an Ethernet cable?
The maximum length of any Ethernet cable (Cat 5, Cat 6 or Cat 7) is 100m or 328ft before any loss of traffic occurs. Over 100m the traffic will start to get errors and reduced speeds.
What is a RJ45 connector?
A RG45 connector is commonly used on an Ethernet cable in computer networks. RG45 stands for Registered Jack No.45, has 8 pins and is crimped on to the cable.