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Some components as depicted in the below picture have different shape in their pins.

I wonder to know is it because the manufacturer wants to tell us from where should we assemble it in the board ?

enter image description here

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    \$\begingroup\$ These flat strips are there because the manufacturer uses the same package for the SMD component. The pins are folded aside and cut shorter then. \$\endgroup\$ – Janka Mar 25 '17 at 17:40
  • \$\begingroup\$ It's an answer, post it like an answer. \$\endgroup\$ – Gregory Kornblum Mar 26 '17 at 6:52
  • \$\begingroup\$ Hi Gregory, which one? my answer or the one which Janka has replied. \$\endgroup\$ – Mohammad Yousefi Mar 26 '17 at 14:50
  • \$\begingroup\$ @Janka good guess, but it looks like a metal case - not surface mountable without some means to isolate the case from the leads. \$\endgroup\$ – stretch Mar 28 '17 at 1:14
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    \$\begingroup\$ @stretch: The SMD package of such crystals uses the same thing as a base. To turn it into SMD, the manufacturer puts a plastic spacer below the can, then bend the pins aside. \$\endgroup\$ – Janka Mar 28 '17 at 1:55
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These flat strips are there because the manufacturer uses the same package for the SMD component. To turn it into SMD, they put a plastic spacer below the can, then bend the pins aside and cut the round wire ends off.

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