<https://kr.element14.com/multicomp/hc49s-12-30-50-70-30-atf/crystal-hc-49-s-12-0mhz/dp/1667001>
<http://schema.org/description>
"The HC49S-12-30-50-70-30-ATF is a 10.9 x 4.65mm 30 and 50ppm surface-mount Crystal with superior resistance weld metal case and low profile. The HC49S series crystal designed for applications where board height space is critical, general, industrial and microcontrollers."
<https://kr.element14.com/multicomp/hc49s-12-30-50-70-30-atf/crystal-hc-49-s-12-0mhz/dp/1667001>