Crystal Package

Discussion specific to the DIP and TQFP packaged ZX devices like the ZX-40, ZX-44, ZX-32 and ZX-328 series. The differences between these devices is primarily the packaging and pinout so most issues will apply to all devices.
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Don_Kirby
Posts: 341
Joined: 15 October 2006, 3:48 AM
Location: Long Island, New York

Crystal Package

Post by Don_Kirby »

Another poster here brought up mention of SMD crystals. After doing a bit of searching, I've decided that even the smallest smd versions won't fit my board layout (yes, it's that tight).

I can fit the watch crystal style package though, like the ZX-24. Is this part commonly available? Perhaps someone can suggest a Digikey part number?

-Don
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dkinzer
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Joined: 03 September 2005, 13:53 PM
Location: Portland, OR

Post by dkinzer »

We haven't been able to find a suitably small SMD crystal, either. The crystal used on the ZX-24/a is a bit larger than the watch crystals that I've seen, though. The body is about 3mm in diameter, 8mm long. Digi-Key p/n XC957-ND is similar to the one that we use, the only difference being that ours is specified to remain in spec over the temperature range of -40 to +85 *C.

If you need the wider temperature range we could probably supply them. Contact me privately if you're interested.
- Don Kinzer
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spamiam
Posts: 739
Joined: 13 November 2005, 6:39 AM

Post by spamiam »

The Citizen CSA309 series will give the temp range of -20c to +70c.

-Tony
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mdown
Posts: 62
Joined: 03 February 2006, 5:46 AM
Location: Dallas, Texas
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Smd Crystal

Post by mdown »

We use the SMD crystal (ECS-147-20-23A-EN-TR) from ECS Inc.
Digikey part# XC981CT-ND its 6mm x 3.5mm x 1.1mm

Image

datasheet:
http://rocky.digikey.com/WebLib/ECS/Web ... 20-23A.pdf

-Mike
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