L829-1G1T-43 vs ARJ11B-MASCB-LT2
| Part Number |
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| Category | Modular Connectors - Jacks With Magnetics | Modular Connectors - Jacks With Magnetics |
| Manufacturer | Bel Fuse Inc. | Abracon LLC |
| Description | CONN MAGJACK 1PORT 1000 BASE-T | CONN MAGJACK 1PORT 100 BASE-T |
| Package | - | - |
| Series | MagJack? | ARJ11B |
| Features | Board Guide | Board Lock |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Through Hole |
| Applications | 10/100/1000 Base-T, AutoMDIX | 10/100 Base-T, AutoMDIX |
| Termination | Solder | Solder |
| Contact Material | Copper Alloy | - |
| Contact Finish | Gold | Gold |
| Orientation | 90° Angle (Right) | 90° Angle (Right) |
| Height Above Board | 0.445" (11.30mm) | 0.545" (13.84mm) |
| Connector Type | RJ45 | RJ45 |
| Shielding | Shielded, EMI Finger | Shielded, EMI Finger |
| Number of Rows | 1 | 1 |
| Number of Ports | 1 | 1 |
| LED Color | Green - Green | Does Not Contain LED |
| Tab Direction | Up | Down |
| Number of Cores per Jack | 8 | 4 |
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1. What are Modular Connectors - Jacks With Magnetics?
Modular Connectors - Jacks With Magnetics are modular connectors with integrated magnetic components, mainly used in high-speed data transmission scenarios such as Ethernet. Magnetic components (such as transformers and filters) are used for signal isolation, impedance matching and anti-electromagnetic interference (EMI), ensuring the stability and reliability of data transmission.
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2. Why do we need to integrate magnetic components?
The main purpose of integrated magnetic components is to meet the requirements of Ethernet standards such as 10/100/1000 Base-T and PoE. Magnetic components provide electrical isolation, signal balance and transient protection, while reducing electromagnetic interference (EMI), ensuring the stability of high-speed data transmission.
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3. How to choose the right Modular Connectors - Jacks With Magnetics?
Factors to consider when choosing:
Number of ports: single-port, multi-port, or stacked configurations.
Speed support: such as 1Gb/s, 10Gb/s, or higher.
Mounting method: panel mount, onboard mount, or through-hole mount.
Shielding performance: whether EMI/RFI shielding is required. -
4. How to solve the compatibility issues of Modular Connectors - Jacks With Magnetics?
Ensuring that the connector is compatible with the cable, device and network standards is key. Choose products that comply with RoHS and IEC 60603-7 standards, and check whether their speed, PoE support and shielding performance meet the requirements.

