I/O CONNECTOR
RJ45 Connectors & MagJacks
PCB-mount RJ45 jacks, with or without integrated magnetics.
Featured partsSYT111B002BA2A1DSYT-320DNL
RJ45 Connectors and Ethernet Magnetics
PCB-mount RJ45 jacks with and without integrated magnetics (MagJacks), plus LAN transformers, PoE transformers and SFP cages for network and industrial equipment.
- 2018Founded in Suzhou, China
- 2Own factories in Dongguan, Guangdong and Mianyang, Sichuan
- 1,500+Customers, including 150+ listed companies
- 7–10 daysLead time
Product lines
ETHERNET MAGNETICS
LAN Transformers
Ethernet transformers for signal isolation, from 10/100 to 10G.
Featured partsWHS16013LFWHSG24701AG
ETHERNET MAGNETICS
PoE Transformers
Isolated power transformers for Power over Ethernet designs.
I/O CONNECTOR
SFP Cages & Connectors
Cages and connectors for SFP, SFP+, SFP28 and QSFP modules.
Featured partsWH191R02SD0S02
INDUCTORS
Common Mode Chokes
Signal line and power line chokes for EMC filtering.
Featured partsWHAC-3225B-201U4WHLC-2012A-900T0
PORT PROTECTION
TVS, ESD & GDT Protection
TVS diodes, ESD protection diodes, gas discharge tubes and MOVs for surge and ESD protection on Ethernet ports.
Featured partsWHGT090V1P0AWHM0082VA
I/O CONNECTOR
SPE Connectors
Single pair Ethernet connectors for industrial field devices.
Featured partsWHSPE00468WHSPE00467
ETHERNET INTERFACE ICs
Ethernet PHY & Switch ICs
Physical-layer and switch ICs, selected together with matching magnetics.
Quality and Compliance Documents
VOOHU is ISO 9001 and ISO 14001 certified. RoHS and REACH compliance is backed by third-party test reports.
- ISO 9001Quality management system certificateCertificate No. 19826Q02503R101Valid until 2029-10-16PDF
- ISO 14001Environmental management system certificateCertificate No. 19826E01323R101Valid until 2029-10-16PDF
- REACHREACH SVHC test report for communication electronic componentsPDF
- EU RoHSRoHS test reportsRJ45 connectorsIntegrated RJ45LAN transformersSFP connectorsPoE transformers
MANUFACTURING
RJ45 Connector and Ethernet Magnetics Manufacturing
We make RJ45 connectors and Ethernet magnetics in our own factories. Specialized teams work with automated equipment, precise material control, process optimization and systematic management.
- I/O CONNECTOR FACTORYDongguan, Guangdong
Lihe Street, Liheng Village, Qingxi Town, Dongguan
RJ45 jacks and other connectors
- MAGNETICS FACTORYMianyang, Sichuan
Yongxing Town Industrial Park, Hi-tech Zone, Mianyang
LAN, PoE and audio transformers and other magnetics
RJ45 jack manufacturing process
- 01Automatic terminal insertion
- 02Terminal bending and formingInner and outer pins
- 03LED assemblySorted by color and polarity
- 04LED forming and heat stakingLED leads fixed and trimmed
- 05Inner pin inspectionMissing, bent, misaligned or scratched pins
- 06Outer pin inspectionMissing, bent, deformed or scratched pins
- 07Continuity and hi-pot testMissing pins and shorts
- 08LED testLighting, voltage drop, polarity and color
PRODUCTION EQUIPMENT
QUALITY CONTROL
Quality Control Process and Test Equipment
Each stage is inspected, from raw materials to finished goods, and every RJ45 connector and transformer is inspected before it leaves the factory. Nonconforming products are reviewed and handled under our nonconforming product control procedure.
- 01
Incoming inspection (IQC)
Purchased materials are held for inspection, counted by the warehouse and checked by IQC. Accepted materials are labeled and stored; rejected materials are reviewed, returned to the supplier and tracked.
- 02
In-process inspection
Each step on the line checks inner pins, outer pins, continuity and hi-pot, and LED lighting, polarity and color.
- 03
Final inspection (QA)
Finished goods are inspected by QA before storage. Rejected units are reviewed and reworked or scrapped; reworked units pass all electrical tests and a full inspection again.
- 04
100% outgoing inspection and returns
Every finished product is inspected before it leaves the factory. Customer returns are inspected by QC, documented in a nonconformance report, reviewed and reworked, then fully inspected and repacked before shipping.
Outgoing inspection equipment
Automatic final test machine
Transformer tester
Hi-pot tester
Vision measuring system
Coating thickness gauge
Automatic insertion and extraction tester
Pyrolysis RoHS analyzer
XRF spectrometer (RoHS)
ALL TEST EQUIPMENT
ENGINEERING SUPPORT
Help with RJ45 and Ethernet Port Design
Cross-reference a part number
Share the original part number and operating conditions for a replacement review.
Replacement review →
Pinout and footprint check
Pin 1 orientation, center-tap wiring and footprints differ between RJ45 jacks. Our FAE team can check them against your schematic and PCB layout.
Contact us →
PoE MagJack or PoE transformer?
A standard RJ45 jack has no magnetics. For PoE, use a MagJack rated for your PoE class or a separate PoE transformer.
PoE solution →
EMC and surge issues
Link drops or failed ESD and surge tests? Get an engineer-reviewed troubleshooting checklist.
Troubleshooting checklist →
PRODUCT RANGE
RJ45 Connector Options at a Glance
PCB-mount RJ45 connectors and MagJacks from our own factory in Dongguan, summarized by the options engineers check first. The RJ45 connector selector filters every option, and the four selection steps on the RJ45 connector page explain how to choose.
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01Data rate
10/100 to 10GBASE-T
MagJacks are rated for 10/100BASE-TX, 1000BASE-T, 2.5GBASE-T, 5GBASE-T or 10GBASE-T, so pick the rating that matches the PHY. With a plain RJ45 jack, the separate LAN transformer sets the rate, and it covers the same range.
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02PoE
PoE, PoE+ and PoE++
MagJacks are rated for IEEE 802.3af, at or bt currents, and LAN transformers go up to 4-pair PoE. On the powered-device side, PoE transformers in EP and EFD core sizes serve the isolated DC/DC stage.
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03Mounting
Through-hole and SMD
Through-hole (DIP) and surface-mount (SMD) RJ45 connectors with 90° right-angle, 180° vertical or 45° entry. Offset and low-profile versions help where the panel cutout or the clearance above the board is tight.
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04Layout
Single-port to 2×N
Single-port jacks and ganged 1×N and 2×N RJ45 connectors for switches, routers and multi-port panels, with tab up or tab down. Footprints differ between tab directions, so check the drawing before layout.
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05Shielding
Shielding and EMI
Unshielded RJ45 jacks, and shielded RJ45 connectors with shield tabs or an EMI gasket that tie the cable shield to chassis ground, as industrial and outdoor equipment often needs.
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06Environment
LEDs and sealing
Jacks without LEDs or with a choice of LED color pairs, industrial ratings such as -40 to +85 °C, and IP65 and IP67 waterproof panel-mount RJ45 connectors for outdoor ports.
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07Magnetics
MagJack or discrete
Both are available at each data rate: MagJacks with the magnetics inside the RJ45 jack, or plain RJ45 jacks paired with a LAN transformer from our Mianyang factory. The LAN transformer page compares the two.
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08Protection
Surge and ESD
Magnetics isolate the port but are not surge protection. Exposed RJ45 ports pair with TVS diodes, ESD protection diodes, gas discharge tubes or MOVs, all from the same supplier.
Not sure which RJ45 connector fits? Send us your PHY and enclosure limits →
SOLUTIONS
Magnetics and Connectors by Interface
01Ethernet
Ethernet interface and magnetics matching
02PoE
Ethernet data and power over the same cable
03SPE
Single-pair Ethernet with lightweight cabling
04CAN
CAN-bus isolation, filtering and protection
05RS-485
Isolation and interference immunity for industrial communications
06Isolated SPI
Isolated SPI communication
07LVDS
High-speed differential signal transmission
08Push-pull converter
Low-power push-pull isolated power supplies
APPLICATIONS
RJ45 Connectors for Industrial, Outdoor and Network Applications
Where VOOHU RJ45 connectors, SFP cages and LAN transformers are used. Waterproof panel-mount RJ45 connectors →
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Industrial control
PLCs, servo drives, HMIs and industrial Ethernet switches.
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Security and surveillance
PoE IP cameras, PTZ domes and NVRs for indoor and outdoor video surveillance.
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PV and energy storage
Battery management systems (BMS), PCS and inverters.
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Power grid
IEC 61850 substation automation devices and protection relays.
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Network equipment
Switches, routers and ONUs.
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More applications
Video processing, including AV over IP, and consumer electronics, with an architecture diagram for each field.
HOW WE WORK
From Part Number to Volume Orders
- 01
Send a part number
Send a part number, your BOM or the interface you are designing.
- 02
FAE suggests and checks
Our FAE team suggests matching parts and checks your schematic and footprint.
- 03
Samples for evaluation
Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project.
- 04
Volume orders
Connectors and magnetics are made in our own factories in Dongguan and Mianyang. 7–10 days lead time.
Datasheets, Selection Guides and Cross-References
DatasheetsDrawings and specifications
Selection guidesHow to choose a part
Cross-referenceComparisons with other brandsNeed a datasheet or drawing that is not listed? Send us the part number.
FAQ
Questions About RJ45 Connectors and Ethernet Magnetics
PCB-mount RJ45 jacks (8P8C) with or without integrated magnetics: tab up or tab down, with or without LEDs, shielded or unshielded, in 1×1 to 2×N port layouts from 10/100 to 10G. Low profile, locking and waterproof versions are also available.
Match the transformer to the PHY data rate and port count. VOOHU LAN transformers, also called Ethernet or network transformers, cover 10/100 BASE-TX, 1000 BASE-T, 2.5G/5G BASE-T and 10G BASE-T, in DIP, SMD and Chip LAN packages.
SFP, SFP+ and SFP28 cages in 1×N and 2×N layouts, plus QSFP cages and connectors.
Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project.
7–10 days lead time.
Send the part number and operating conditions. Our FAE team can suggest a VOOHU part with matching parameters for you to verify with samples.
MagJack is a common name for an RJ45 jack with the LAN transformer and common mode chokes built into the connector housing. It saves board space next to the Ethernet PHY compared with a separate transformer and jack.
A standard RJ45 jack contains no magnetics, so PoE needs either a MagJack rated for your PoE class (IEEE 802.3af, at or bt) or a separate PoE transformer next to the jack. VOOHU supplies both.
Ethernet magnetics, a LAN transformer plus common mode chokes, isolate the PHY from the cable. The isolation meets the IEEE 802.3 requirement and breaks ground loops between devices, the chokes suppress common-mode noise on the twisted pairs, and in PoE designs the PoE current flows through the center taps.
Yes. VOOHU makes RJ45 connectors and Ethernet magnetics in its own factories and distributes Ethernet PHY and switch ICs, so the PHY, the LAN transformer or MagJack, and the RJ45 connector can come from one supplier. Our FAE team checks them together against your schematic.
Datasheets and drawings, ISO 9001 and ISO 14001 certificates, RoHS and REACH third-party test reports, and a CE certificate for selected RJ45 connector models. Most are in the download center; for anything not listed, send us the part number.
Yes. The troubleshooting checklist covers link drops and failed ESD and surge tests, and our FAE team can help check the port design, including the magnetics, the RJ45 connector shielding and the protection parts, against your test results.
The PHY part number, data rate and port count, the PoE class if any, and the mechanical limits: mounting, entry angle, tab direction, height and panel cutout. With these, our FAE team can suggest RJ45 connectors and magnetics for you to evaluate with samples.
VOOHU is a manufacturer of RJ45 connectors and Ethernet magnetics, founded in 2018 and based in Suzhou, China. Connectors are made in its own factory in Dongguan, Guangdong, and magnetics, including LAN, PoE and audio transformers, in its own factory in Mianyang, Sichuan. VOOHU also supplies SFP cages, common mode chokes and TVS / ESD / GDT / MOV protection devices, and distributes Ethernet PHY and switch chips. It serves 1,500+ customers, including 150+ listed companies.
More questions?
Ask our FAE team about part selection, footprints or PoE design.