Grade by suffix
The suffix sets the temperature range: -NC covers 0 °C to 70 °C, -NI −40 °C to +85 °C and -NE −40 °C to +105 °C. Quote the full suffix in every enquiry.
Ethernet Interface Chip products
JL1111 100M Ethernet PHY
JL1111 is a single port 100M PHY with an MII MAC interface in a QFN32 package, 5 by 5 millimetres. The series spans three temperature grades and includes an EtherCAT variant, so the suffix matters more here than on most series.
Part number search & selector
Find JL1111 100M Ethernet PHY part numbers
Filter JL1111 grades by temperature, optical port, data rate, ports, MAC interface, interface voltage, copper port, mode, package and size.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
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| Image | Part number | Datasheet | Compare | Downloads | Series | Data Rate | Ports | MAC Interface | V（if） | Copper Port | Optical Port | Mode | Temperature | Package | Size | Sample |
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JL1111BI-NI(EtherCAT) | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | NA | MII-COP | -40~85℃ | QFN32 | 5*5 mm |
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JL1111B -NE | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | -40~105℃ | QFN32 | 5*5 mm |
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JL1111B -NI | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | -40~85℃ | QFN32 | — |
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JL1111B -NC | SPEC | JL1111 series | 100M | 1 | MII | 1.8V | 10 Bsae-T | 100 Base-FX | MII-COP | 0~70℃ | QFN32 | — |
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By series
Ethernet PHY series by speed and ports
Series are separated by link speed, port count and the MAC interface they present.
Series overview
Picking a JL1111 100M Ethernet PHY grade
The JL1111 100M Ethernet PHY links a controller’s MII MAC to a 10/100 copper port and, on the standard grades, a 100BASE-FX fiber port. It is also described as an MII Ethernet PHY, a 10/100 Ethernet PHY or an EtherCAT PHY. Commercial, industrial and extended temperature grades plus an EtherCAT variant share a QFN32 package. RMII hosts should see the JL1101 series.
The EtherCAT variant
The part tagged EtherCAT is rated −40 °C to +85 °C with no optical port, so it is copper only. Its MII host side suits EtherCAT slave controllers, which commonly use MII.
100BASE-FX on standard grades
The -NC, -NI and -NE parts add a 100BASE-FX optical port beside copper, so a fiber link to a remote cabinet remains an option. Take the fiber circuit from the datasheet.
MII, 1.8 V and QFN32
Every grade uses MII toward the host, a 1.8 V interface voltage and QFN32. The selector lists 5 × 5 mm for the -NE and EtherCAT parts; check the others in the datasheet.
Applications
Where JL1111 100M Ethernet PHYs are used
JL1111 choices start from the host interface and the heat the port must survive.
Servo drives and EtherCAT I/O
Servo drives, I/O terminals and encoders built on an EtherCAT slave controller need an MII transceiver per port, the role of the EtherCAT-tagged JL1111 part.
Drives, lighting and sealed boxes
Inverters, LED lighting controllers and outdoor cabinets run hot inside. The -NE grade covers −40 °C to +105 °C and keeps the fiber option for long runs.
Indoor building equipment
Printers, access control panels and intercoms that stay indoors can use the -NC grade, rated 0 °C to 70 °C, with an MII-equipped processor or FPGA.
Documents
JL1111 100M Ethernet PHY datasheets
Search by the full JL1111 part number, suffix included, then check the MII pinout, fiber circuit and QFN32 drawing before layout.
Showing representative available file sets. Search to find a specific SKU.
JL1111BI-NI(EtherCAT)JL1111 series
JL1111B -NEJL1111 series
JL1111B -NIJL1111 series
JL1111B -NCJL1111 series
- 4
- PDF datasheets listed
- 0
- 3D file sets listed
- 0
- PCB footprints listed
VOOHU’s published product content is reviewed by its engineering team. Specifications, downloads and technical support information are tied to specific part numbers, so you can verify them before requesting samples or a quotation.
Sourcing
Ordering the JL1111 100M Ethernet PHY from VOOHU
VOOHU is an authorized JLSemi distributor. Every JL1111 part number, the EtherCAT variant included, has a PDF datasheet covering MII timing, pinout and the QFN32 drawing.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
Samples and quotes
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. For a quote, name the JL1111 suffix, quantity and project stage, and we will confirm availability.
Alternative to your current MII PHY
Send the part number and datasheet of your present 10/100 PHY. Our FAE team checks MII mapping, fiber use and temperature range, reviews register and layout differences, and proposes JL1111 candidates to test with samples before production.
Company and quality
VOOHU is ISO 9001 and ISO 14001 certified. Since 2018 VOOHU has supplied more than 1,500 customers, including 150+ listed companies.
FAQ
More questions on the JL1111 100M Ethernet PHY
Support when buying, 10 Mbps operation and where to find each datasheet.
How does JL1111 differ from JL1101?
Both are single port 100M devices. JL1111 presents MII on the MAC side in a QFN32 package at 5 by 5 millimetres; JL1101 presents RMII in a smaller QFN24 at 4 by 4. Choose by what your host controller provides, then by the space you have available.
What temperature grades does the series cover?
Three. NC covers 0 to 70 degrees, NI covers minus 40 to 85, and NE covers minus 40 to 105. That makes it the widest graded series in the range. Select against the internal enclosure temperature rather than the ambient the product sits in.
What is the EtherCAT variant?
One part in the series is identified as an EtherCAT device in the part number. Note that this variant is listed without fibre support, unlike the other JL1111 parts which support 100Base-FX. If your design needs EtherCAT, specify it at enquiry so the correct variant is quoted.
Do all JL1111 parts support fibre?
No. Most variants support 100Base-FX alongside copper, but the EtherCAT variant is listed as having no fibre option. This is exactly why fibre support has to be checked against the complete part number and suffix rather than assumed from the series name.
How do I request samples or a quote?
With a complete part number, send the part number, quantity, delivery region and the date you need it. If you are still selecting, send the host MAC interface, the temperature range and whether you need EtherCAT or a fibre port.
What support comes with the JL1111 100M Ethernet PHY from VOOHU?
VOOHU is an authorized JLSemi distributor, and our FAE team reviews the MII connection, fiber circuit and grade choice on your schematic. VOOHU also offers 10/100 Ethernet transformers for the copper side.
Does JL1111 also run at 10 Mbps?
Yes, on copper. Every grade lists a 10BASE-T copper port and a 100M data rate, so it works as a 10/100 Ethernet PHY on twisted pair; the 100BASE-FX fiber side runs at 100M only.
Where do I find the JL1111 datasheet?
Search the downloads section by part number to open the PDF JL1111 datasheet for each grade. No 3D model or PCB footprint is posted; take the QFN32 land pattern from its drawing.
Engineer support
JL1111 100M Ethernet PHY samples and FAE checks
Send the candidate part number and the condition you need reviewed. Sample support can be added after the selection is clear; commercial questions may be discussed in the same engineering conversation.
- 1Selected part numbers
- 2Engineering review
- 3Sample request
- 4Commercial discussion
For a replacement review
- Original part and datasheet
Include the document revision
- Operating conditions
Temperature, isolation voltage and PoE current basis
- Package constraints
Pin count, pitch and spacing between pin rows
- Project stage and annual volume
To help prioritize samples and evaluation
- Target review date
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
For samples and a quotation
- Candidate part numbers
From the selector or engineering review
- Quantity and project stage
Prototyping / pilot build / production
- Required delivery date
Specify sample and production timing separately
- Required documentation
Compliance documents, material declarations or third-party reports
Samples are free of charge. Sample quantity and lead time depend on the part number and project stage. Sales will respond on business days.
