LAN Transformer_RJ45/SFP Connectors_Common Mode Choke_Source Manufacturer: Suzhou VOOHU Electronics Technology Co., Ltd. (VOOHU)
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I/O Connector Series RJ45 & SFPFull range of products; Customization supportedThe standard RJ45 series includes the standard RJ45 series and the integrated RJ45 series，Special RJ45 series includes waterproof RJ45, XLR RJ45, and RJ45 straight connectors. The standard SFP series includes SFP CAGE and SFP CONNECTOR,Optional accessories include light guides and heat sinks; available in single-port, multi-port, and stacked configurations and belly to belly... -
Network Connector RJ11/RJ45Efficient transmission, stable connectionThe RJ45 series includes the regular RJ45 series and the integrated RJ45 series, including 1×1, 1×N, and 2×N sink-type modules, supporting 90° vertical and 180° vertical installation options.
The integrated RJ45 interface provides comprehensive speed support, including built-in 100M, 1000M, 2.5G, 5G, 10G, and HDBase-T. -
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POE Power TransformerSupports customization complete certifications.Voohu Electronics' PoE power transformers offer comprehensive temperature resistance and compliance support.，
It features simplified wiring, high flexibility, and high reliability for long-distance transmission.
Products
Design recommendations for different product applications based on product features and specifications
Applications
VOOHU has provided a broad product portfolio to meet the needs of customers in a variety of applications.
Industrial Control
VOOHU is committed to providing better electronic components for the industrial control field, providing a variety of solutions to help the development of industrial automation and intelligence
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Latest News
2026-07-03
Suzhou VOOHU Electronics : 2026 electronica China Concludes Successfully – Looking Forward to 2027!
On July 3, 2026, the three‑day electronica China came to a successful close at the Shanghai New International Expo Centre.
VOOHU Electronics (VOOHU) presented its “Eight Major Solutions” and a complete portfolio of communication electronic com
2026-06-18
Countdown! July 1–3, Shanghai | VOOHU Returns to electronica China with “Eight Major Solutions”
Shanghai New International Expo CentreVOOHU Booth: N2.735 (Hall N2, Booth 735)
In 2024, VOOHU made its debut at electronica China.In 2026, we return with a more complete product portfolio and our “Eight Major Solutions”.
From July 1 to 3, at t
2026-04-30
2026 VOOHU Electronics (VOOHU) Labor Day Holiday Notice
Dear customer: Hello! On the occasion of Labor Day, all employees of Suzhou VOOHU Electronic Technology Co., Ltd. would like to extend our most sincere holiday greetings to you and thank you for your long-term trust and support! Our company’s 2026 Labor Day holiday arrangements are as follows: May 1st (Friday) to May 5th (Tuesday), a total of 5 days. Return to work as normal on May 6th (Wednesday). Makeup class on May 9th (Saturday). To ensure that your production process is not affected, it is recommended that you make relevant arrangements in advance. If you have any needs, please feel free
2026-02-11
Walking Together, Embarking on a New Journey: Suzhou VOOHU Electronics Technology Co., Ltd.'s 2025 Annual Ceremony Successfully Held
As the years change and new chapters unfold,we gather here at this pivotal moment,to review our shared journey and look forward to a new chapter.The VOOHU 2025 Annual Meeting is being held in grand style,and all colleagues are gathered together,to pay tri
2026-05-22
【Product Overview】 Master PoE Power Transformers: This One Article Is All You Need — VOOHU Electronics
In PoE power system design, the selection of PSE and PD controllers often draws the most attention. However, in real engineering, whether the matching between the power transformer and the LAN Transformer is appropriate directly determines power supply ef
2026-04-03
VOOHU :Voltage-Mode vs Current-Mode PHY: Drive Principles, Peripheral Design, and Selection Guide
The driver type of an Ethernet PHY chip directly determines system signal integrity, anti-interference capability, and hardware design complexity. Voltage-mode and current-mode PHYs may appear to differ only in signal carrier, but they have fundamental di
2026-03-06
【PRODUCT BASIC INTRODUCTION】SINGLE-PAIR ETHERNET(SPE) CONNECTOR
In the traditional industrial automation pyramid, the field layer (sensors, actuators) and the control layer (PLC) have long been separated by various closed, low-speed fieldbuses (such as Profibus, CAN, IO-Link, etc.).This architecture leads to complex c
2025-12-29
Audio transformers: a key component in professional audio systems
In audio systems, speakers and amplifiers are often the focus of discussion, while the audio transformer, a crucial component, is frequently overlooked. In reality, it plays an indispensable role in ensuring sound purity, reducing background noise, and ex
2026-07-10
【FAQ】 Audio Isolation Transformer: Signal Goes In But Won't Come Out? – VOOHU WHTT4005 Primary-Secondary Isolation Test Full Analysis
In professional audio, broadcast communications, and industrial instrumentation systems, ground loop hum, common‑mode interference, and abnormal voltage coupling are three common signal‑chain problems. In mild cases, they raise the noise floor and degrade
2026-06-29
【Standard Circuit Design】Isolated SPI Solution Standard Circuit Reference
This solution is VOOHU Electronics (VOOHU)'s standard isolated SPI solution. The company has focused on the field of communication electronic components for over 9 years, adhering to the business philosophy and service concept of "Choose VOOHU – Tru
![[Standard circuit design] Isolated SPI solution standard circuit reference](https://voohu-us.oss-us-west-1.aliyuncs.com/upload/image/20260626/8cfeb197c7951ad2eea441777098ffdd.jpg?size=66060)
2026-06-26
[Standard circuit design] Isolated SPI solution standard circuit reference
Isolated SPI standard circuit design reference This solution is the VOOHU Electronics (VOOHU) isolated SPI standard solution. The company has focused on the field of communication electronic components for more than 9 years. The company adheres to the business strategy and service concept of choosing VOOHU·True Reliability and provides a full set of technical solution support. Technical background and core concepts Isolated SPI communication SPI (Serial Peripheral Interface) adopts a master-slave synchronous, full-duplex architecture, using chip select CS, clock SCLK and MOSI/MISO four-wire co
2026-06-12
【Frequently Asked Questions】Placement of Common‑Mode Choke in Ethernet Transformers: Detailed Explanation for Non‑PoE and PoE Scenarios – VOOHU
In Ethernet hardware circuit design, the LAN Transformer is a core component that ensures signal transmission and provides electrical isolation. The isolation transformer and common‑mode choke (CMC), as the two key supporting components of the Ethernet tr
2026-07-15
VOOHU WH591H009D1S20 replaces TE (Tyco) 2170705-2: QSFP28 1×1 shielding cage (Cage) component comparison
VOOHU WH591H009D1S20 replaces TE (Tyco) 2170705-2, QSFP28 1×1 shielding cage component core parameter comparison: port opening, panel opening, component length and material are compared one by one.
2026-07-16
VOOHU WH29BT019D1S01 as a Replacement for TE 2007637-5: 2×2 Stacked SFP+ Cage & Connector Assembly Comparison
VOOHU WH29BT019D1S01 as a replacement for TE 2007637-5: a 2×2 stacked SFP+ cage and press-fit connector assembly, with a one-to-one comparison of key parameters — port aperture, overall length, materials and plating.
2026-07-15
VOOHU WH491U019D0S00 replaces TE (Tyco) 1888617-1: QSFP+ 1×1 through-panel shielding cage (Cage) selection comparison
1. Introduction to friendly products (TE Connectivity, formerly Tyco Electronics) TE Connectivity (formerly Tyco Electronics) is the world's leading manufacturer of connectors and sensors. Its 1888617-1 is "QSFP Thru-Bezel shielding cage assembly" (Cage Assembly, Thru Bezel, QSFP). The cage shell is made of 0.25mm thick Nickel Silver; the EMI spring is copper alloy (surface 0.8µm minimum tin plating 0.8µm minimum nickel); and QSFP MSA
2026-07-16
VOOHU Deep Dive: Failing Hi-Pot or Leakage-Current Tests on Your Ethernet Port? Selecting LAN Transformer Isolation Rating (1.5kV/3kV/4kV) and Safety Compliance
Function and EMC pass, but the board fails the final Hi-Pot / leakage-current test? VOOHU dissects the real causes of arcing and excess leakage (center-tap cap rating, PCB creepage, GDT false triggering) and gives a full 1500V-5000V isolation-rating selection table for LAN transformers and integrated magnetic RJ45.
2026-07-15
Network port RJ45 connector selection and shielding grounding design: VOOHU explains in detail how to choose integrated magnetic/discrete, shielded shell and sunken plate low back
The network port RJ45 connector is randomly selected as a mechanical part that "can be plugged into a network cable". As a result, the radiation emission exceeds the standard, ESD kills it, the shielded network cable is even worse when plugged in, and the board is thin but cannot be installed in the casing. VOOHU thoroughly explains the selection from three main lines: the choice between integrated magnetic RJ45 and discrete RJ45 + external network transformer, whether the shielding shell is grounded (Bob-Smith and chassis ground), tab orientation/sunken plate/low back/multi-connecti
2026-07-10
VOOHU Deep Dive: Galvanic Isolation and Common-Mode Noise Suppression for Gigabit Ethernet Ports on Industrial Gateways and PLCs
Gigabit Ethernet ports on industrial gateways and PLCs often share a cabinet with VFDs and switching supplies, where ground potential differences drive ground loops and common-mode noise couples into the pairs. This guide dissects the physical layer and gives in-stock VOOHU selection answers.
2026-07-09
VOOHU Field Guide: Selecting 10/100BASE-TX Ethernet LAN Transformers and ESD / Surge Protection
10/100BASE-TX ports are high-volume, cost-sensitive and exposed, and often fail on ESD, lightning surge and EMC. This guide explains the LAN transformer's role and key parameters from the 100BASE-TX physical layer, how ESD/surge damages the PHY, and maps VOOHU's in-stock 10/100 transformers, integrated magnetic RJ45 and GDT+TVS+ESD three-stage protection to a selection table.
