Qwiic JST Connector - SMD 4-pin

Here is a tiny 4-pin Qwiic 1mm JST connector. This connector is used on all of our Qwiic-based boards and can be used to create your own I2C-based device compatible with the Qwiic system. Additionally, this connector will mate with all of our Qwiic cables with a solid lock.


The SparkFun Qwiic connect system is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


Qwiic JST Connector - SMD 4-pin Product Help and Resources

Core Skill: Soldering

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3 Soldering

Skill Level: Competent - You will encounter surface mount components and basic SMD soldering techniques are required.
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Customer Comments

  • Are these connectors available in a through-hole version?

    • I believe that the SZ series might have a compatible part, but it is only available from one distributor on octopart, and there is no CAD symbol I’ve seen, or even any pictures available besides the mechanical drawings.

      I’d love it if SFE had those, with a compatible footprint. I don’t trust my hand soldering on these.

      • Yeah, I’ve run into trouble hand-soldering them. I can hand-solder the four signal pins with a little bit of care, but I can’t figure out how to solder the two mounting pins, which are necessary to hold the connector in place. The mounting pins are recessed inside the plastic housing, and there is very little exposed area, so I can’t manage to get a soldering iron in there to heat the mounting pins without melting the housing.

  • would you be able to use a standard 4 pin jst connector instead?

    • JST connectors come in a ton of different sizes and types. As long as your connectors are 1mm JST-SH series connectors, they should fit these sockets.

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