RB1-125BTAGA 10/100 Base-T RJ45 Connector Built-in Green/yellow LEDs
RB1-125BTAGA Integrated Magnetic RJ45 Connector Overview
The RB1-125BTAGA is an integrated magnetic RJ45 jack (Magjack) supporting 10/100 Base-T Ethernet communication.
This 1x1 port RJ45 Magjack integrates an Ethernet connector with built-in magnetic components, eliminating the need for external LAN transformers and simplifying PCB design. Featuring a tab-down through-hole PCB mounting structure, integrated green and yellow LED indicators, and a shielded housing design, RB1-125BTAGA provides reliable Ethernet connectivity for network equipment, industrial controllers, embedded systems, and communication devices.
Unlike standard RJ45 connectors, a magnetic RJ45 connector combines the RJ45 interface and Ethernet isolation transformer into one compact component. This integrated design helps engineers reduce PCB space, simplify layout complexity, and improve Ethernet system reliability.
The RB1-125BTAGA is manufactured for applications requiring:
- 10/100 Mbps Ethernet connectivity
- Integrated Ethernet magnetics
- Through-hole PCB installation
- Shielded EMI protection
- LED status indication
- Reliable long-term operation
Technical Specifications of RB1-125BTAGA RJ45 Magjack
1. General Specifications
| Parameter | Specification |
|---|---|
| Product Type | Integrated Magnetic RJ45 Connector |
| Compatible Model | RB1-125BTAGA |
| LINK-PP Part Number | LPJ0013AHNL |
| Ethernet Speed | 10/100 Base-T |
| Port Configuration | 1x1 Single Port |
| Connector Type | RJ45 Magjack |
| Mounting Type | Through-Hole PCB Mount |
| Orientation | Tab Down |
| Shielding | Shielded |
| LED Indicator | Green / Yellow LEDs |
| Compliance | RoHS / REACH Compliant |
2. Electrical Specifications (@25°C)
| Parameter | Specification |
|---|---|
| Turns Ratio | 1CT:1CT ±5% |
| OCL (Open Circuit Inductance) | 350μH Min @100kHz, 0.1V, 8mA DC Bias |
| Isolation Voltage | 1500Vrms |
| Operating Temperature | 0°C to +70°C |
3. Signal Integrity Performance
| Parameter | Specification |
|---|---|
| Insertion Loss | 1–100MHz: -1.2dB Max |
| Return Loss | 1–30MHz: -16dB Min |
| Return Loss | 60–80MHz: -10dB Min |
| Crosstalk | 1–100MHz: -30dB Min |
| Common Mode Rejection | 1–100MHz: -30dB Min |
| Common Mode Rejection | 30–60MHz: -12dB Min |
| Common Mode Rejection | 80–100MHz: -8dB Min |
4. Mechanical Specifications and Materials
| Component | Material / Specification |
|---|---|
| Housing | Thermoplastic PBT + 30% Glass Fiber |
| Flame Rating | UL94V-0 |
| Contact Material | Phosphor Bronze C5210R-EH |
| Contact Thickness | 0.35mm |
| Pin Material | Brass C2680R-H |
| Shield Material | SUS304-1/2H |
| Shield Thickness | 0.20mm |
| Contact Plating | Gold 6μin Min in Contact Area |
| PCB Soldering | Wave Soldering |
| Solder Temperature | 250°C / 5 Seconds |
RB1-125BTAGA RJ45 Connector Datasheet
Key Features of RB1-125BTAGA 10/100 Base-T Magnetic RJ45 Connector
★ RB1-125BTAGA Compatible Replacement
The LPJ0013AHNL provides a direct alternative solution for customers searching for:
- RB1-125BTAGA replacement
- RB1-125BTAGA equivalent
- RB1-125BTAGA compatible RJ45 connector
It is suitable for OEMs and engineers who need a reliable replacement component while maintaining the original mechanical and electrical requirements.
★ Integrated Magnetic RJ45 Design
The integrated Magjack structure combines:
- RJ45 Ethernet connector
- Isolation transformer
- Common mode filtering components
into one PCB-mounted solution.
Benefits include:
- Reduced PCB component count
- Simplified Ethernet circuit design
- Improved manufacturing efficiency
- Better signal integrity control
★ 10/100 Base-T Ethernet Performance
The LPJ0013AHNL supports IEEE 802.3 Ethernet applications requiring:
- 10BASE-T
- 100BASE-TX
The integrated transformer provides electrical isolation between the PHY side and network line side, helping protect Ethernet devices from voltage differences and electrical interference.
★ Shielded Through-Hole RJ45 Connector
The connector features:
- Shielded metal housing
- Through-hole PCB mounting
- Tab-down orientation
The shielding structure helps reduce electromagnetic interference (EMI) and improves reliability in environments with electrical noise.
★ Integrated Green and Yellow LEDs
Built-in LED indicators provide convenient visual status monitoring:
- Green LED
- Yellow LED
Typical applications include:
- Link status indication
- Network activity indication
- Equipment diagnostics
RB1-125BTAGA RJ45 Connector Q&A
1. What is the recommended replacement for RB1-125BTAGA?
Answer:
The recommended replacement for RB1-125BTAGA is LINK-PP LPJ0013AHNL, a compatible 10/100 Base-T integrated magnetic RJ45 connector designed for Ethernet networking applications.
LPJ0013AHNL features the same key configuration requirements, including:
- 1x1 RJ45 port
- Tab-down design
- Through-hole PCB mounting
- Integrated magnetic transformer
- Green/yellow LED indicators
- Shielded Ethernet connector structure
It provides a reliable replacement solution for manufacturers looking for an alternative magnetic RJ45 jack with stable supply availability and equivalent electrical performance.
2. Is LPJ0013AHNL a pin-to-pin replacement for RB1-125BTAGA?
Answer:
Yes. LPJ0013AHNL is designed as a compatible replacement solution for RB1-125BTAGA applications.
Before mass production conversion, engineers should verify:
- PCB footprint compatibility
- Mechanical dimensions
- Pin assignment
- LED polarity
- Transformer electrical specifications
LINK-PP provides technical documentation, drawings, and engineering support to help customers complete replacement validation.
3. What type of connector is RB1-125BTAGA?
Answer:
RB1-125BTAGA is an integrated magnetic RJ45 connector (RJ45 Magjack) designed for 10/100 Base-T Ethernet applications.
Unlike a standard RJ45 jack, a magnetic RJ45 connector integrates Ethernet magnetics, including isolation transformers and filtering components, into the connector assembly.
This integrated design helps:
- Reduce PCB component count
- Save board space
- Simplify Ethernet circuit design
- Improve manufacturing efficiency
4. What is the difference between a standard RJ45 connector and a magnetic RJ45 connector?
Answer:
A standard RJ45 connector only provides the physical Ethernet interface, while a magnetic RJ45 connector integrates Ethernet transformer components inside the connector.
Comparison:
| Feature | Standard RJ45 Connector | Magnetic RJ45 Connector |
|---|---|---|
| Ethernet transformer | External required | Integrated |
| PCB components | More components | Reduced |
| PCB space | Larger | More compact |
| EMI performance | Depends on external design | Optimized integrated solution |
| Application | Basic connection | Ethernet networking equipment |
Magnetic RJ45 connectors are commonly used in routers, switches, industrial Ethernet devices, embedded systems, and communication equipment.
5. Does LPJ0013AHNL support 10/100 Base-T Ethernet?
Answer:
Yes. LPJ0013AHNL supports 10/100 Base-T Ethernet applications and is designed for reliable Fast Ethernet connectivity.
The integrated magnetic structure provides:
- 1CT:1CT transformer ratio
- 350μH minimum OCL
- 1500Vrms isolation voltage
making it suitable for Ethernet devices requiring signal isolation and stable transmission performance.
6. What applications use RB1-125BTAGA compatible RJ45 connectors?
Answer:
RB1-125BTAGA compatible LPJ0013AHNL magnetic RJ45 connectors are widely used in:
- Network switches
- Routers
- Industrial Ethernet equipment
- Smart cameras
- Embedded networking devices
- IoT gateways
- Communication terminals
- Control systems
The compact 1x1 port design makes it suitable for PCB-based Ethernet applications requiring integrated magnetics.
7. Can LINK-PP provide customized magnetic RJ45 connector solutions?
Answer:
Yes. LINK-PP provides customized RJ45 Magjack solutions for OEM and ODM customers.
Customization options include:
- Port configuration
- LED combinations
- Shielding design
- PCB mounting structure
- Transformer specifications
- Operating temperature range
- Mechanical modifications
With extensive experience in Ethernet connectivity components, LINK-PP supports customers from prototype evaluation to volume production.
8. How do I select the right replacement magnetic RJ45 connector?
Answer:
When selecting an RB1-125BTAGA replacement or equivalent RJ45 Magjack, engineers should consider:
Ethernet speed requirement
- 10/100 Base-T
- Gigabit Ethernet
- Higher-speed Ethernet
Mechanical compatibility
- Port configuration
- Mounting type
- Tab direction
- PCB footprint
Electrical performance
- Transformer turns ratio
- OCL value
- Isolation voltage
- Signal integrity performance
Application environment
- Commercial
- Industrial
- Extended temperature applications
Selecting a compatible magnetic RJ45 connector ensures reliable Ethernet performance and reduces redesign risks.
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