I am looking for the most recent 4 pin I2C connector, looking online I see PN: 22-44-7041 for a molex connector. What is the most recent 4 pin I2C male connector and female plug?
Hello @mschmidt
Welcome to the Digikey techforum, this link 0.098" (2.50mm) 4 Through Hole Headers, Male Pins | Rectangular Connectors | Electronic Components Distributor DigiKey is connectors that are similar to P/N: 22-44-7041 and all of them but the TE connector have their mates listed on our website. The mate to the TE connector is 440133-4 TE Connectivity AMP Connectors | Connectors, Interconnects | DigiKey
I2C, the Inter-Integrated Circuit bus is not designed to go off of a PCB so the standards do not specify any connectors at all.
Of course a number of companies have used a number of different connectors to allow off PCB connection of breakout boards.
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Great thank you!
Hi mschmidt,
There is no connector standard for I2C. I2C only defines the protocol and does not cover the physical interface at all. However, there are a few pseudo standards that various companies have defined to allow their customers to quickly connect various expansion boards they produce to their motherboards.
These include:
Sparkfun “Qwiic” and Adafruit “STEMMA QT” connector common standard using the 1mm pitch JST SH/SR series (both vendors use the same pinout)
Qwiic and STEMMA QT I2C pinout:
Adafruit “STEMMA” and DFRobot “Gravity” connector standards using the 2mm pitch JST PH/PHR series. (NOTE: They use different pinouts for SCL, SDA, power, and ground.)
SeeedStudio “Grove” connector standard using 2mm pitch proprietary connector.
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