4 Port PoE RJ45 Connector Magjack 10/100Base-T Bob Smith Termination
1*4 RJ45 Connector With 10/100 Base-TX Integrated Magnetic For PoE Application
Quick Details of 100Base T RJ45 Magjack PoE:
- Connector Type: RJ45 Multiple Port Connectors
- Modular Jack & Plug Interface Type: RJ45
- Connector & Contact Terminates To: Printed Circuit Board
- Latch Orientation: Standard - Latch-Up
- Multiple Port Configuration: Ganged
- Port Matrix Configuration: 1x4
- Connector Contact Density: Standard
- PCB Mount Orientation: Right Angle
- EMI Tabs: With
- Status Indicator Type: LED
- Right LED Color: Yellow
- Left LED Color: Green
- Housing Material: Thermoplastic PA66+30%G.F UL94V-0
- Contact Material: Phosphor Bronze C5210R-EH Thickness=0.35mm
- Pins: Brass C2680R-H Thickness=0.35mm
- Shield: SUS S201-1/2H Thickness=0.2mm
- Contact plating: Gold 6 micro-inches min. In contact area.
Electrical Specifications @25°C :
| Items | LINK-PP 1x4 Port RJ45 Connector |
|---|---|
| Turns Ratio (@100KHz, 0.1V) | PINS: (P1- P2) : (J1- J2): 1:1 ± 3% PINS: (P3- P6) : (J3- J6): 1:1 ± 3% |
| OCL (@100KHz, 100mV, 8mA, DC Bias) | PINS: (P1, P2), (P3, P6) = 350uH MIN |
| Insertion Loss | 0.3- 100MHz: -1.0dB Max |
| Return Loss (dB Min) | 1-30MHz: -20 30-60MHz: -15 60-80MHz: -10 |
| Crosstalk | 1- 100MHz: -30dB Min |
| Common to Common Mode Rejection | 1- 100MHz: -30dB Min |
| Balanced DC Line Current | used pairs 350mA Max |
| Hipot | 1500Vrms/o.5mA/2sec Min |
| Operating Temperature Range | -40 – +85 °C [ -40 – +185 °F ] |
What are Bob Smith terminals?
Bob Smith terminals, also known as Bob Smith terminal networks, are a technology used in Ethernet ports. This technology improves the performance of Ethernet interfaces by using resistors and capacitors to provide common-mode impedance matching. This helps reduce electromagnetic interference (EMI) and improves signal integrity. The "Bob Smith" technique uses a 75 Ohm resistor for a common mode impedance match at each signal pair, collectively connected via a 1000pF capacitor to the chassis ground. The resistors are typically placed in series with each differential signal line, and the capacitor is used for common-mode noise filtering. The purpose of this termination technique is to match the common-mode impedance of the transmission line, which helps minimize reflections and maintain signal integrity.
Applications of RJ45 Ethernet MagJack:
1. Industrial Ethernet switches: used in industrial environments to facilitate reliable, high-speed 10/100Base-T data communications.
2. Fast Ethernet switch: Supports efficient data transmission with Fast Ethernet technology.
3. Layer 4 switch: used for data processing at the transport layer of the OSI model.
4. LAN Switch (Local Area Network Switch): Efficient data exchange between local network communication devices.
5. WAN switch (wide area network switch): used to control data traffic between wide area networks in different locations.
6. ATM switch (asynchronous transfer mode switch): transmits data in compliance with the ATM network protocol.
7. FDDI switch (Fiber Distributed Data Interface): used in network switches that utilize fiber optic technology to transmit data.
8. Token Ring Switches: Supports token ring network topology, providing a deterministic method for data access in the network.
9. Security Gateway: Acts as a security gateway for data traffic protecting the network.
10 Multimedia gateway: realizes the integration of multimedia services in the network and supports the transmission of various types of data.
4 Port RJ45 Connector Datasheet:
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