Cyton + Daisy build / TVS diode polarity ?

teknomageteknomage UK
edited June 2022 in Build-it-yourself

Hi, I'm attempting to build the Cyton and Daisy boards on my own.. going down the hand-soldering route. I got the PCBs printed and managed to procure all the required components as well. I decided to start easy, so I began putting together the Dongle based on RFD22301. Managed to solder almost all the components in place, except for a couple of them.. specifically, the ESDALC6V1-1M2 (TVS diode) and the CG0402MLC-05LG varistor. The problem I'm facing here is that these components I received from China dont have the polarity marked on them, unlike the way they're depicted in the datasheets. I'm assuming there shouldn't be a problem of polarity with the varistor, correct? But for the TVS diode, I am unable to find any marking that would indicate the cathode.. and I cant differentiate between its terminals, even though I did a simple continuity test.

I know this sounds like such a noob question but is there any other way I can determine the polarity of the TVS diode?? I dont want to solder it incorrectly and then fry something on the board in the process, lol
I will have further questions down the line, but I need to get this sorted out first.

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