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Home > Products > Magnetic RJ45 Jack > RB1-125BAG1A 10/100Base-T Magnetic RJ45 Connector with Transformer

RB1-125BAG1A 10/100Base-T Magnetic RJ45 Connector with Transformer

Product Details

Place of Origin: China

Brand Name: LINK-PP

Certification: UL,ROHS,Reach,ISO

Model Number: RB1-125BAG1A

Document: LPJ0013AHNL.pdf

Payment & Shipping Terms

Minimum Order Quantity: 50/500/1000/25K

Price: $0.5-$0.8

Packaging Details: 50pcs/tray,1200pcs/carton

Delivery Time: in Stock Ship within 3days

Payment Terms: TT,NET30/60/90 Days

Supply Ability: 4200K-PCS/Month

Get Best Price
Highlight:

RB1-125BAG1A

,

RJ45 Integrated Magnetics

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RJ45 Connector with Transformer

PN:
RB1-125BAG1A
Made In China:
LPJ0013AHNL
Products Type:
MagJack RJ45 Connector With Transformer
LED Indicator:
Green / Yellow
EMI Shielding:
Shielded
Ethernet Application:
10/100Base-T
Isolation Protection:
Built-in
Mounting Type:
Through Hole,Right Angle
PN:
RB1-125BAG1A
Made In China:
LPJ0013AHNL
Products Type:
MagJack RJ45 Connector With Transformer
LED Indicator:
Green / Yellow
EMI Shielding:
Shielded
Ethernet Application:
10/100Base-T
Isolation Protection:
Built-in
Mounting Type:
Through Hole,Right Angle
RB1-125BAG1A 10/100Base-T Magnetic RJ45 Connector with Transformer


Product Overview


The RB1-125BAG1A RJ45 1×1 with Transformer is a high-performance integrated RJ45 MagJack connector designed for 10/100Base-T Ethernet applications. This single-port, shielded RJ45 connector integrates a LAN transformer (magnetics), EMI shielding with grounding fingers, and dual-color LED indicators into a compact through-hole right-angle package.


Designed for Ethernet networking equipment requiring reliable signal integrity, EMI suppression, and space-efficient PCB integration, the RB1-125BAG1A supports AutoMDIX functionality, meets demanding electrical performance requirements, and provides excellent common mode rejection, low insertion loss, and isolation protection.


This RJ45 connector with integrated transformer and LED is ideal for applications including Ethernet switches, routers, industrial networking equipment, embedded controllers, IoT gateways, and communication devices.


Key Features

  • Integrated RJ45 MagJack with transformer
  • 1×1 single-port RJ45 connector configuration
  • Supports 10/100Base-T Ethernet applications
  • Built-in LED indicators (Green/Yellow)
  • Shielded design with EMI grounding fingers
  • Through-hole right-angle PCB mounting
  • Supports AutoMDIX Ethernet functionality
  • 350µH minimum inductance with 8mA DC bias
  • Excellent EMI performance with ≥30dB common mode rejection
  • 1500VAC HiPot isolation protection
  • UL94 V-0 rated high-temperature thermoplastic housing
  • Operating temperature range: 0°C to +70°C




RB1-125BAG1A Technical Specifications


General Specifications

Parameter Specification
Product Type RJ45 Connector with Integrated Transformer
Part Number RB1-125BAG1A
Connector Type RJ45 Modular Jack (MagJack)
Configuration 1×1 Single Port
Application 10/100Base-T Ethernet
Integrated Magnetics Yes
LED Indicator Yes
LED Color Green / Yellow
Shielding Shielded with EMI Finger
Mounting Type Through Hole
PCB Mount Orientation Right Angle (90°)
Tab Direction Down
Number of Rows 1
Number of Cores per Jack 4
Packaging Tray


Mechanical Specifications

Parameter Specification
Height Above PCB 0.525" (13.33mm)
Port Configuration Single Port
Termination Style Solder
Shell Material Stainless Steel
Front Shell Thickness 0.20mm
Back Shell Thickness 0.20mm
Grounding Leg Pre-soldering
Housing Material High Temperature Thermoplastic
Housing Color Black
Flame Rating UL94 V-0


Contact & Material Specifications

Component Material Specification
RJ45 Terminal Phosphor Bronze Thickness 0.30mm
Contact Area Finish Gold Flash
Solder Tail Finish 100µ" Min Tin
Underplating 50~100µ" Nickel
Input Terminal Brass Thickness 0.35mm
Link Terminal Brass Thickness 0.25mm
Contact Finish Gold Flash
Shield Material Stainless Steel


Environmental Specifications

Parameter Specification
Operating Temperature 0°C to +70°C
Storage Temperature -40°C to +85°C
Storage Condition Protection against corrosion and physical damage




RB1-125BAG1A Electrical Specifications


Ethernet Performance

Parameter Specification
Ethernet Speed 10/100Base-T
Impedance 100Ω Balanced Low Pass Filter
AutoMDIX Support Yes
Number of Ports 1
Transformer Type Integrated LAN Magnetics


Transformer Electrical Characteristics

Parameter Specification
Primary Inductance 350µH Min
Test Condition 100kHz, 0.1V, 8mA DC Bias
Input Isolation 1500VAC / 60 sec
DC Isolation 2250VDC / 60 sec




RB1-125BAG1A Signal Integrity Performance


The RB1-125BAG1A integrated magnetics module is designed to maintain reliable Ethernet signal transmission through optimized filtering and noise suppression.


Insertion Loss


Frequency Range Performance
1~100MHz -1.0dB Max


Return Loss

Frequency Range Performance
1~30MHz -18dB Min
30~60MHz -16dB Min
60~80MHz -12dB Min


EMI & Noise Performance

Parameter Performance
Common Mode Rejection (CMR) -30dB Min @1~100MHz
Crosstalk -30dB Min @1~100MHz




RB1-125BAG1A Datasheet


RB1-125BAG1A Datasheet - Dimensions


RB1-125BAG1A Datasheet - Dimensions  


RB1-125BAG1A Datasheet - Schematic 

RB1-125BAG1A Datasheet - Schematic 




Why Choose RB1-125BAG1A RJ45 Connector with Transformer?


1. Integrated Magnetics Saves PCB Space

Unlike traditional RJ45 connectors requiring external LAN transformers, the RB1-125BAG1A combines:


  • RJ45 connector
  • Ethernet transformer
  • EMI shielding
  • LED indicators


into a single compact component, reducing PCB complexity and assembly costs.


2. Reliable Ethernet Signal Performance

With:


  • 350µH minimum inductance
  • Low insertion loss
  • High common mode rejection
  • Controlled 100Ω impedance


the connector ensures stable 10/100Mbps Ethernet communication.


3. Industrial-Grade Mechanical Design

The combination of:


  • Stainless steel shielding
  • UL94 V-0 housing
  • Through-hole mounting


provides excellent durability for long-term operation.




Q&A

Q1. What Ethernet speed does the RB1-125BAG1A RJ45 connector support?

The RB1-125BAG1A supports 10/100Base-T Ethernet applications, providing reliable Fast Ethernet connectivity for networking equipment.


Q2. Does the RB1-125BAG1A include an integrated transformer?

Yes. This RJ45 MagJack integrates Ethernet magnetics, eliminating the need for a separate external LAN transformer.


Q3. Does this RJ45 connector support AutoMDIX?

Yes. The RB1-125BAG1A supports AutoMDIX, allowing automatic detection and correction of Ethernet cable transmit and receive pairs.


Q4. What type of PCB mounting does this RJ45 connector use?

The connector uses a through-hole right-angle mounting design, providing strong mechanical stability for PCB assembly.


Q5. Does the RB1-125BAG1A include LED indicators?

Yes. It features integrated green/yellow LED indicators for Ethernet link and activity status monitoring.


Q6. What is the transformer inductance specification?

The integrated transformer provides a minimum primary inductance of 350µH at 100kHz with 8mA DC bias.


Q7. Is this RJ45 connector shielded for EMI protection?

Yes. The RB1-125BAG1A features a stainless steel shield with EMI grounding fingers to reduce electromagnetic interference.


Q8. What is the operating temperature range?

The operating temperature range is 0°C to +70°C, with storage capability from -40°C to +85°C.


Q9. What applications use RJ45 connectors with integrated magnetics?

Integrated RJ45 MagJacks are commonly used in Ethernet switches, routers, industrial controllers, IoT devices, embedded systems, and communication equipment.


Q10. Can RB1-125BAG1A replace a separate RJ45 connector and LAN transformer?

Yes. Because the transformer is integrated into the RJ45 connector assembly, it can simplify PCB design and reduce component count compared with separate solutions.