Five copper ports
All five ports run at 100M over copper and forward traffic among themselves. For eight ports without a host link, the JL5108 moves up to QFN64 at 9 × 9 mm.
Ethernet Interface Chip products
JL5105 100M Ethernet Switch IC
JL5105 provides five external 100M ports with no dedicated host uplink, in a QFN48 package at 6 by 6 millimetres. It suits pure port expansion where the host controller does not need to be on the network.
Part number search & selector
Find JL5105 100M Ethernet Switch IC part numbers
Filter JL5105 parts by port count, data rate, supply voltage, temperature range and package size.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
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Copper Port
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Optical Port
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| Image | Part number | Datasheet | Compare | Downloads | Series | Data Rate | Ports | Interface Mode | MAC interface voltage | External supply voltage | Copper Port | Optical Port | Temperature | Package | Size | Sample |
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JL5105C-NC | SPEC | JL5105 series | 100M | 5 | NA | NA | 3.3V(1.1V)¹ | 10 Base-T | NA | 0~70℃ | QFN48 | 6*6 mm |
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JL5105C-NI | SPEC | JL5105 series | 100M | 5 | NA | NA | 3.3V(1.1V)¹ | 10 Base-T | NA | -40~85℃ | QFN48 | 6*6 mm |
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By port topology
Switch ICs by port count and uplink
Port notation such as 5+1 means five external ports plus one host uplink.
Series overview
JL5105 Ethernet switch IC for port expansion
The JL5105 Ethernet switch IC connects five 100M copper ports to one another, with no MAC interface for a host processor. That makes it a compact 5 port switch chip for unmanaged switches and for equipment that shares one link among several devices. It comes in QFN48 at 6 × 6 mm, in commercial and industrial grades. If the processor must join the network, compare the JL5104 with an RMII host port.
No host bus to route
Interface mode and MAC voltage are listed as NA: no MII or RMII bus to route, just the copper ports, the supply and the parts the datasheet calls for.
Supply and package
JL5105C-NC and JL5105C-NI use a QFN48 package at 6 × 6 mm, with the external supply listed as 3.3 V (1.1 V). Budget magnetics for every RJ45 port as well; see our 10/100 Ethernet transformers.
Temperature grades
JL5105C-NC covers 0 to 70 °C for desktop and indoor switches. JL5105C-NI covers −40 to +85 °C for a 5 port switch in control cabinets and kiosks.
Applications
Where JL5105 Ethernet switch ICs are used
Use it where several devices share one cable run and no processor needs its own port.
Small unmanaged switches
A five-port desktop or wall-plate switch is the classic build: one port to the router, four to PCs, printers or a TV.
Port expansion in enclosures
Kiosks, display cabinets and lab racks can bring in one network cable and fan it out to a display, card reader and camera inside.
Cabinet switch boards
JL5105C-NI is rated −40 to +85 °C, so a small switch board in a control cabinet can link a PLC, an HMI and a drive.
Documents
Download the JL5105 Ethernet switch IC datasheet
Enter the part number to get the JL5105 datasheet, then check the port circuit, supply rails and QFN48 land pattern before layout.
Showing representative available file sets. Search to find a specific SKU.
JL5105C-NCJL5105 series
JL5105C-NIJL5105 series
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- 3D file sets listed
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- 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
Buying JL5105 Ethernet switch ICs through VOOHU
As an authorized JLSemi distributor, VOOHU supplies the JL5105 for prototypes and production. The downloads section has a datasheet (PDF) for each part number; 3D models and PCB footprints are not listed.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
Samples and quotations
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. To get a quotation, list the part number, quantity and delivery region, and we will confirm availability.
Replacing another switch chip
Send the part number and datasheet of the switch chip you want to replace. Our FAE team reviews port, register and layout differences against the JL5105 and suggests candidates to prove 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. For single-port designs, VOOHU also supplies JLSemi Ethernet PHYs.
FAQ
JL5105 Ethernet switch IC questions
Sourcing, fiber options and the gigabit alternative.
Why does JL5105 have no uplink?
It is built for unmanaged port expansion, where the switch forwards between its five front panel ports and the host controller plays no part. That removes the uplink routing and the host interface from the design. If the host must send or receive traffic, choose a device with an uplink instead.
Can I still manage the switch?
Not through a dedicated host interface, because there is not one. Without an uplink the host cannot reach the switch for configuration or monitoring. If your product needs management, remote access or host-originated traffic, the 3+1, 5+1 or larger configurations are the ones to compare.
How does it compare with JL5104?
Both are 100M devices in the same QFN48 package at 6 by 6 millimetres. JL5104 gives three external ports plus an RMII uplink; JL5105 gives five external ports and no uplink. Decide on whether the host needs to be on the network, then on how many front panel ports you need.
Can all five ports run at full rate together?
Actual forwarding capacity is set by the device's switching fabric and buffering, which the datasheet defines. Port count is not the same as simultaneous full rate throughput. If your traffic is heavily concentrated, test the real pattern on a prototype rather than assuming.
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 external port count and confirm whether the host needs to be on the network.
Can VOOHU supply the JL5105 Ethernet switch IC for an unmanaged switch build?
Yes. VOOHU is an authorized JLSemi distributor for JL5105C-NC and JL5105C-NI. Tell us the port count, enclosure temperature and annual volume, and our FAE team will help choose the grade and plan samples.
Can a JL5105 design take a fiber uplink?
Not directly: the optical port column lists NA, so every JL5105 port is copper. For fiber, the gigabit JL6107 S and SC parts and the JL6110 series list 1000BASE-X.
Should a five-port design use the JL5105 or the gigabit JL6105?
Choose by link speed. The JL5105 is 100M in QFN48 at 6 × 6 mm with a 3.3 V (1.1 V) supply. The JL6105 runs at gigabit in QFN88 at 10 × 10 mm, listed at 1.1 V and 0 to 70 °C.
Engineer support
JL5105 Ethernet switch IC samples and quotes
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.
