I/O Connector products
RJ11 jacks carry four or six contacts in a housing narrower than RJ45, for telephony and low speed serial links. Confirm which contacts your application actually uses, then choose orientation, mounting and height to suit the panel.
Part number search & selector
Filter RJ11 connectors by entry angle, port layout, tab, mounting, shield tabs and temperature.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
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Category
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Connector Type
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Ports
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Tab
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Integrated Connector Modules
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Data Rate
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PoE
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LED
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Mounting Method
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Shield Tabs
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EMI / Gasket
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Operating Temperature
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| Image | Part number | Datasheet | Compare | Downloads | Category | Connector Type | Ports | Tab | Integrated Connector Modules | Data Rate | PoE | LED | Mounting Method | Shield Tabs | EMI / Gasket | Operating Temperature | Sample |
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SYT53211144IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Down | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT52251466IWA1DY1057 | SPEC | RJ11 Connector | 180° | 1 x 4 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT52221164IWA1DY1 | SPEC | RJ11 Connector | 90° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT52221144IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT5722E1166IWA1DB4 | SPEC | RJ11 Connector | 90° | 1 x 1 | Down | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT5721E1166IWA1DB1006 | SPEC | RJ11 Connector | 90° | 1 x 1 | Down | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT53211144IWA1D1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Down | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT52251266IWE1DY1T095 | SPEC | RJ11 Connector | 180° | 1 x 2 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT55211166IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT5521E1266IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 2 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT55211164IWE1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT5521E1264IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 2 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT55211144IWE1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT53211166IWA1DY1017 | SPEC | RJ11 Connector | 90° | 1 x 1 | Down | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT5222E1166IWA1DY1017 | SPEC | RJ11 Connector | 180° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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SYT52221166IWA1DY1017 | SPEC | RJ11 Connector | 180° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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WH5621641111 | SPEC | RJ11 Connector | 180° | 1 x 1 | Up | NO | ALL | ALL | NO LED | DIP | NO | NO | -40 to +85°C |
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Broaden the selected filters or clear the current search.
By type
RJ45, RJ11, offset and low height variants, combination housings and dust plugs.
Series overview
An RJ11 connector on a PCB is the modular jack where a telephone line, DSL line or low-speed serial cable meets the board. Depending on the contacts fitted, it is also sold as a 6P4C or 6P6C modular jack, RJ11 PCB jack or telephone jack, and the six-contact form is often called RJ12. Bodies are right angle or vertical, with single, ganged or stacked ports. For the Ethernet ports beside it, see our 8P8C RJ45 jacks.
Most parts are 90° right angle jacks, with the cable parallel to the board, such as SYT55211166IWA1DY1017. Vertical 180° jacks like SYT52221166IWA1DY1017 and WH5621641111 take the plug from above, for a board parallel to the panel.
Single 1 x 1 modular jacks cover most designs. SYT55211264IWA1DY1017 gangs two ports in a row (1 x 2) and SYT55211466IWA1DY1017 four (1 x 4), while SYT59212164IWA1DY1G022 stacks two ports (2 x 1) to save panel width.
The Tab column shows which way the plug latch faces. SYT55211144IWA1DY1017 is tab up and SYT53211144IWA1DY1017 tab down, both 90° single jacks with a PCB footprint. Put the latch where a finger can reach it.
None of the RJ11 jacks here has LEDs, and most have no shield tabs. Parts such as SYT52T1166GWA1DY1008 and SYT56211166GWA1DY1030 add shield tabs, which let you tie the shell to chassis ground near noisy circuits.
Applications
Most RJ11 designs serve telephony, broadband access or low-speed control links.
Desk phones, fax machines and analog telephone adapters take the line on an RJ11 jack. A two-line adapter can use a 1 x 2 block such as SYT5521E1266IWA1DY1017 to keep both ports in one housing.
A DSL modem or gateway takes the phone line on an RJ11 connector beside its Ethernet jacks. For that line port, SYT55211144IWA1DY1017 comes with a datasheet, 3D model and PCB footprint.
Controllers, alarm panels and meters often run serial links over a modular jack. The 1 x 4 row SYT55211466IWA1DY1017 serves several links from one housing; SYT52251466IWA1DY1057 is a vertical 180° 1 x 4.
Documents
Search by part number for the datasheet, 3D model or PCB footprint, then check the hole pattern and panel cutout.
Showing representative available file sets. Search to find a specific SKU.
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
VOOHU is a manufacturer of RJ11 and RJ45 jacks, with its own connector factory in Dongguan. Nearly every part here has a datasheet, most a 3D model and some a PCB footprint.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
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 quotation, send part numbers, quantity and build date; typical lead time is 7–10 days.
To replace an RJ11 jack you use today, send its part number and datasheet. Our FAE team compares contact count, entry angle, tab direction and footprint with VOOHU parts, then suggests candidates to validate with samples before production.
VOOHU is ISO 9001 and ISO 14001 certified. Since 2018 VOOHU has supplied more than 1,500 customers, including 150+ listed companies. The line jack and LAN jacks of one product can come from the same factory.
FAQ
Answers on who makes these jacks, industrial use and design files.
It depends on how many conductors the application uses. A basic two wire telephone line needs fewer contacts than a four wire arrangement or a serial link that uses additional signals. Count the conductors the interface actually requires, then choose the housing that exposes them.
Physically yes, because the RJ11 housing is narrower and enters the wider opening. It is a common source of confusion in the field. The reverse is not true: an RJ45 plug will not fit an RJ11 jack. Do not rely on the physical fit as an indication that the interfaces are compatible.
No. Ethernet requires eight contacts and the differential pairs that go with them. An RJ11 jack does not have enough contacts, regardless of what plug will physically enter it. For Ethernet, use an RJ45 with eight contacts.
Vertical and right angle variants cover most panel arrangements, and the choice depends on whether the cable enters horizontally and where the board sits behind the panel. Check the drawing for the panel cutout and the board footprint together rather than separately.
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 number of contacts required, the orientation and the board height available.
Yes. VOOHU manufactures RJ11 connectors in its own connector factory in Dongguan, China, where it also makes RJ45 jacks. The range covers single, ganged and stacked through-hole parts, most with a datasheet and 3D model.
In most cases, yes. Every RJ11 jack on this page is rated −40 °C to +85 °C and mounts through-hole, which anchors the body against cable strain. For a grounded shell, pick a part with shield tabs such as SYT56211166GWA1D1Y1006.
Search the part number in the downloads section. Nearly every part has a datasheet and most a 3D model; SYT55211144IWA1DY1017 and SYT53211144IWA1DY1017 also have a PCB footprint. Check the hole pattern and panel cutout before routing.
Engineer support
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.
Include the document revision
Temperature, isolation voltage and PoE current basis
Pin count, pitch and spacing between pin rows
To help prioritize samples and evaluation
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
From the selector or engineering review
Prototyping / pilot build / production
Specify sample and production timing separately
Compliance documents, material declarations or third-party reports
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. Sales will respond on business days.
