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 TransformerCustomization supported; full 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.
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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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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
![[New Product Recommendation] CAT6A 10 Gigabit Waterproof RJ45 Coupler Male and Female](/upload/image/20260717/4694ba2c3b52b9d273512e3777f53f84.jpg)
2026-07-17
[New Product Recommendation] CAT6A 10 Gigabit Waterproof RJ45 Coupler Male and Female
VOOHU Electronics officially launched two new coupler male and female connectors, WHKNZ63YSCAT6a and WHKNZ63CAT6a180, which focus on 10 Gigabit (CAT6A) transmission rate. They adopt industrial-grade metal shell design and support PoE power supply. They are targeted at connection scenarios with high speed and reliability requirements such as industrial Ethernet, outdoor security and PoE front-end. The metal male connector WHKNZ01000FS is an existing product of VOOHU and can be used with two new products. For product selection and technical support, please visit VOOHU's official platform WW
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
2026-07-16
VOOHU WH29BT019D1S01 replaces TE (Tyco) 2007637-5: 2×2 stacked SFP+ shielding cage + crimp connector component selection comparison
VOOHU WH29BT019D1S01 replaces TE (Tyco) 2007637-5, 2×2 stacked SFP+ shielding cage + crimp connector component core parameter comparison, port opening, component length, material plating are compared one by one.
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
2026-07-15
VOOHU WH29AT019D1S01 replaces TE (Tyco) 2007492: SFP+ 2×1 stacked cage + crimp connector selection comparison
1. Introduction to Friendly Products (TE Connectivity) TE Connectivity (formerly Tyco Electronics) is the world's leading manufacturer of connectors and sensors. Its products are widely used in data communications, industrial and communication equipment. Its 2007492 series is "Cage and PT Connector Assembly, with EMI Springs, Press Fit, 2×1, Stacked SFP+" (Cage and PT Connector Assembly, with EMI Springs, Press Fit, 2×1, Stacked SFP+), pictured in 2007
2026-06-30
RJ45 network port integrated network transformer: VOOHU SYT511Q293AC1A8D057 replaces HanRun HR871190A comparison report
VOOHU SYT511Q293AC1A8D057 and HanRun HR871190A are both single-port Tab-Up RJ45 network ports with integrated Gigabit (100/1000Base-T) network transformers. OCL 350µH, turns ratio 1CT:1CT, isolation 2250VDC are the same, green/yellow dual-color LED is the same; VOOHU insertion loss ≤1.0dB, common mode rejection -30dB, operating temperature -40~+85℃ is better.
![[FAQ] Three FAQs for integrated RJ45 (Mag-Jack) application](/upload/image/20260724/fd7e9c7a96b2d92065dbdd6aff0b38b3.jpg)
2026-07-24
[FAQ] Three FAQs for integrated RJ45 (Mag-Jack) application
The integrated network port (Mag-Jack) integrates the network transformer, common mode inductor, Bob Smith termination and indicator light inside the RJ45. Its pins include differential pins, center taps, NC, GND, LED and other different functions, and the connection methods are different. Most of the three types of problems, such as network port failure, indicator light not lighting, and EMC failure, are not damaged components, but incorrect pin wiring. VOOHU Electronics (VOOHU) explains these three types of common wiring errors in four parts: phenomenon, root cause, correct approach, and sel
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)
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
2026-07-21
VOOHU WH291Z02SD0S02 as a Replacement for Molex 74754-0101: Single-Port SFP+ 1×1 Cage Comparison
VOOHU WH291Z02SD0S02 replaces the obsolete Molex 74754-0101 — a single-port SFP+ 1×1 EMI cage. Key-parameter comparison of housing material, EMI bezel gasket, press-fit termination, operating temperature, and availability.
2026-07-17
VOOHU WH191R02SD0S02 as a Replacement for Molex 74737-0009 - SFP Cage Comparison
VOOHU WH191R02SD0S02 replaces Molex 74737-0009: SFP 1x1 one-piece press-fit EMI cage, key-parameter comparison.
2026-07-10
VOOHU WH81177C00021 Replaces Molex 2027180100 — QSFP-DD High-Speed Connector Comparison
VOOHU WH81177C00021 replaces the discontinued Molex 2027180100 — a QSFP-DD 76-circuit, right-angle surface-mount high-speed connector, with a side-by-side parameter comparison.
2026-07-09
VOOHU WH290Z019D0S01 Replaces Molex 74441-0001 — SFP+ Connector Comparison
VOOHU WH290Z019D0S01 is a drop-in replacement for Molex 74441-0001: an SFP+ 20-position, 0.80 mm-pitch board connector with identical A/B/C/D dimensions and PCB layout, enabling a pin-and-footprint swap. Key parameters compared side by side.
2026-07-24
VOOHU actual combat: How to implement the unmanaged switch solution - switching chip (100M/Gigabit) selection and integrated magnetic RJ45 network port design to avoid pitfalls
How to implement 5-port and 8-port unmanaged switches? Should I choose 100M or 1000M switching chips? How many ports? The chip integrates PHY. Does the network port require a network transformer? Why can't we negotiate as soon as the power is turned on? Why is it that the EMC test exceeds the standard? Why does the ESD sound fail after being hit? VOOHU explains the selection logic from the physical layer structure of the switching chip, analyzes the trade-off between integrated magnetic RJ45 and discrete network transformers, and provides a selection table and FAQ for on-rack switching ch
2026-07-23
VOOHU Selection Guide: Isolated Supply for a PoE Powered Device (PD) and How to Pick the (Flyback) PoE Power Transformer
One cable carries both power and data, yet the PD-side isolated supply is where designs overheat, ripple, and fail hi-pot. This guide walks the PoE chain and shows how to size the flyback transformer and pick the right VOOHU PoE power transformer by 802.3af/at/bt class.
2026-07-22
VOOHU Field Guide: Derating and Selecting LAN Transformers & Common-Mode Chokes for Industrial Ethernet Ports at -40 to +85 °C
Industrial port "fine cold, drops hot"? This article shows how temperature changes LAN-transformer OCL/DCR and choke impedance, with a -40 to +85 °C wide-temperature derating method and a VOOHU industrial-grade selection table.
2026-07-20
VOOHU Field Guide: Switch/Router Board Power Running Hot with Excess Ripple? Molded Power Inductor Selection & Layout
Switch/router board power running hot, ripple too high, ports failing radiated EMC? A practical guide to buck power inductors—ripple current, saturation current Isat, temperature-rise current Irms, DCR and magnetic shielding—with a VOOHU molded-inductor (WHYT1050/1265/2313) selection table, layout checklist and FAQ.
