The ultra-miniature 4-Pad ECX-1210B is a very compact SMD Tuning Fork Crystal. The 1.2 x 1.0 x 0.35 mm ceramic package is the smallest in it’s class. This is very popular with small wearables and medical devices.
ECX-1210B
32.768 KHz SMD Tuning Fork Crystal
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ECX-1210B SMD CRYSTAL
Low Power RTC Applications such as STM32 AN2867
1.2 x 1.0...