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prevalence of 4 pin crystal chips

Hi Group,

I was ordering parts the other day (well today) and I noticed that there're alot of 4-pin crystal chips out there now... indeed, there seem to be more of these than the normal 2-pin ones for SMT

But 2 of the pins are unused anyway...

I was reading up on it, and it seems that these 4-pin crystals are easier to mount using machines, is this the only reason for their prevalence?

(Searching on Farnell for 32khz crystals)

Thanks

Kelv

Reply to
Kelvin Chu
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That's the one. Standard packaging, pick & place, that sort of thing.

Cheers! Rich

Reply to
Rich Grise

Here are my guesses:

  1. The 4 pin results in using a standard SO package.
  2. They use 4 pins because of the weight.

Tam

Reply to
Tam/WB2TT

Learn something every day :-)

Thanks to both of you!

Kelv

more

easier

Reply to
Kelvin Chu

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