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Home > Products > RJ45 socket > RJ45 Transformer Series
RJ45 Transformer Series
  • RJ45 Transformer Series

RJ45 Transformer Series

FEATURE 

‧31.00mm*19.10mm 

‧8202 

 APPLICATIONS

 ‧ LCD TV, router, switch, tablet PC, projector

  • Product Details
  • Dimension

The RJ45 Transformer Series refers to a range of modular transformers designed for Ethernet and networking applications. These components provide signal isolation, impedance matching, and noise suppression in high-speed data transmission systems. Commonly used in PoE (Power over Ethernet), switches, routers, and network interface cards, they ensure reliable communication by minimizing EMI/RFI interference. The series supports various standards like 10/100/1000BASE-T, offering compact, surface-mount designs for PCB integration. With robust performance across industrial and commercial environments, these transformers enhance signal integrity while meeting IEEE 802.3 specifications.



CharacteristicsSpecification
Rated voltage125VAC RMS
Current1.5AMP
Contact resistance50MILLIOHMS MAX
Insulation resistance500VDC
Dielectric strength1000VAC RMS 50HZ 1MIN



Features


  1. High Isolation Voltage (1500Vrms): Ensures robust protection against voltage surges, complying with IEEE 802.3 standards for enhanced safety in harsh environments.

  2. Low Insertion Loss (<0.5dB @ 100MHz): Minimizes signal attenuation, maintaining data integrity for high-speed applications up to 1Gbps.

  3. Wide Operating Temperature (-40°C to +85°C): Guarantees reliable performance in extreme conditions, suitable for industrial and outdoor deployments.

  4. Impedance Matching (100Ω ±15%): Optimizes signal transmission efficiency, reducing reflections and ensuring compatibility with Cat5e/Cat6 cables.

  5. Compact SMD Design (16-pin, 10mm x 13mm): Saves PCB space while supporting automated assembly processes for cost-effective production.

  6. Common-Mode Rejection Ratio (CMRR > 25dB @ 100MHz): Effectively suppresses electromagnetic interference (EMI) for stable data transmission.


Applications


RJ45 Transformer Series – Key Application Fields

1. Industrial Ethernet Networks: RJ45 transformers ensure reliable signal isolation and noise suppression in harsh industrial environments, such as factory automation, PLC systems, and motor control applications. They comply with IEEE 802.3 standards for robust data transmission.

2. Telecommunications Equipment: Used in switches, routers, and VoIP devices to provide galvanic isolation and EMI protection, maintaining signal integrity in high-density communication infrastructures.

3. Automotive Electronics: Enable Ethernet-based in-vehicle networks (e.g., ADAS, infotainment) by offering temperature-resistant (-40°C to +125°C) performance and vibration immunity per automotive-grade certifications.

4. Medical Devices: Critical for patient-connected equipment like diagnostic imaging systems, where electrical isolation prevents leakage currents and ensures compliance with IEC 60601-1 safety standards.

5. Smart Grid Systems: Facilitate noise-free data exchange in power line communication (PLC) and substation automation by withstanding high-voltage transients and surges.

6. Consumer IoT Products: Integrate into smart home hubs, IP cameras, and gaming consoles to enhance EMI/RFI filtering while maintaining compact form factors for space-constrained designs.


FAQ

Q: What is an RJ45 Transformer?
 A: An RJ45 transformer is a passive component used in Ethernet networks to provide signal isolation, impedance matching, and noise suppression between the PHY (Physical Layer) chip and the RJ45 connector.

Q: Why is an RJ45 transformer needed?
 A: It protects sensitive circuitry from voltage surges, reduces EMI/RFI interference, and ensures stable data transmission by matching impedance (typically 100Ω for Ethernet).

Q: What are common types of RJ45 transformers?
 A: Popular series include Halo TG110, Pulse J0011, Bourns SM4532, and Würth 749013, offering 10/100/1000BASE-T compatibility.

Q: How to select an RJ45 transformer?
 A: Consider data rate (e.g., 1Gbps), isolation voltage (≥1500V), insertion loss, and compliance with standards like IEEE 802.3.

Q: Can RJ45 transformers integrate magnetics?
 A: Yes, many modern transformers (e.g., TDK ALT4532) combine magnetics and common-mode chokes in a single SMD package.

Q: Where are RJ45 transformers used?
 A: Applications include routers, switches, PoE devices, industrial Ethernet, and automotive networking (100BASE-T1).





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+86 13418217372

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Rixing Industrial Zone,Tangxia Town, Dongguan City, Guangdong Province, China

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