UNShielded RJ4s connector

Gotcha 👍 — I think you mean the Unshielded RJ45 connector (sometimes people type it as RJ4s by accident 😄).

This is the super common Ethernet/LAN network connector you see on routers, Raspberry Pi, PCs, switches, and IoT boards 🌐📡

Let’s break it down nice and simple 👇

📦 Unshielded RJ45 (8P8C) Connector – Product Description

An unshielded RJ45 connector is a standard 8-pin modular connector used for:

Ethernet (LAN) networking

Data communication

Industrial control wiring

IoT devices

Raspberry Pi / routers / switches

“Unshielded” means:
👉 No metal shield around the connector
👉 Uses UTP (Unshielded Twisted Pair) cables
👉 Lighter, cheaper, and perfect for normal indoor networking

✨ Key Features

✅ 8P8C (8 positions, 8 contacts)
✅ Supports Cat5e / Cat6 / Cat6a cables
✅ 10/100/1000 Mbps Ethernet
✅ No metal shield (UT version)
✅ Easy crimp or PCB mount types
✅ Low cost and widely available
✅ Snap-lock latch for secure connection

📊 Electrical Specifications (Typical)
Parameter Value
Connector type 8P8C (RJ45)
Cable type UTP (Cat5e/Cat6)
Data rate Up to 1 Gbps (or higher depending cable)
Voltage rating ~125 V
Current rating ~1.5 A per contact
Contact resistance ≤ 20 mΩ
Insulation resistance ≥ 500 MΩ
Operating temp -40 °C to 70 °C
Mounting Cable plug or PCB jack
🔌 Pin Configuration (Standard Ethernet)
RJ45 Pinout (Front View)
1 2 3 4 5 6 7 8
| | | | | | | |

T568B Wiring (Most common)
Pin Wire Color Function
1 White/Orange TX+
2 Orange TX-
3 White/Green RX+
4 Blue Unused/PoE
5 White/Blue Unused/PoE
6 Green RX-
7 White/Brown Unused
8 Brown Unused
🔧 Types You’ll See
🔹 Crimp Plug (Cable end)

Used to make LAN cables

Requires crimping tool

Goes onto Cat5e/Cat6 wire

🔹 PCB Jack (Female)

Used on boards like:

Raspberry Pi

Routers

Ethernet shields

Soldered onto PCB

🔹 With Magnetics (MagJack)

Has built-in transformer + LEDs

Used for Ethernet PHY chips

⚙️ How It Works

Twisted pair wires carry differential signals

RJ45 connects cable to device

Ethernet PHY handles data transmission

Twisting reduces noise → good signal integrity

Unshielded works great for:
🏠 Indoor
🏢 Office
🛠 Short/medium runs

Shielded is preferred for:
⚡ High EMI environments
🏭 Factories
🚗 Automotive

🛠️ Common Applications

✔ Ethernet LAN cables
✔ Raspberry Pi networking
✔ Routers & switches
✔ IoT gateways
✔ CCTV systems
✔ Industrial communication

💡 Design Tips
✅ Use Cat5e or Cat6

For stable Gigabit speed.

✅ Keep cables short

< 100 m recommended for Ethernet spec.

✅ Avoid noise sources

Keep away from motors, relays, SMPS transformers.

✅ Shield only if needed

UTP is lighter and cheaper — fine for most electronics projects.

✅ Quick Summary

Unshielded RJ45 = standard Ethernet connector for UTP cables

Perfect when you want:
✔ Cheap + simple LAN connection
✔ Raspberry Pi or IoT networking
✔ Easy crimp cables
✔ Indoor usage