# TCX Corp. TCXO part no compatibility

**URL:** <https://forum.digikey.com/t/tcx-corp-tcxo-part-no-compatibility/21676>\
**Category:** Crystals-Oscillators-Resonators\
**Tags:** part-comparison, txc-corporation, oscillators\
**Created:** [April 19, 2022, 8:23am UTC](https://forum.digikey.com/t/tcx-corp-tcxo-part-no-compatibility/21676 "2022-04-19T08:23:29Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![ole.eek](https://avatars.discourse-cdn.com/v4/letter/o/45deac/32.png) [@ole.eek](https://forum.digikey.com/u/ole.eek)\
**Post date:** [April 19, 2022, 8:23am UTC](https://forum.digikey.com/t/tcx-corp-tcxo-part-no-compatibility/21676/1 "2022-04-19T08:23:29Z")

</div>

The TCXO 7Z38470005 from TXC Corp breaks with the part numbering scheme found on the TXC webpage. I wonder whether the 7Z38470005 can be used instead of 7Z-38.400MBG-T (also from TXC)? Specwise the components looks compatible, but some difference I assume it must be..

[https://www.digikey.no/no/products/detail/txc-corporation/7Z38470005/10492147](https://www.digikey.no/no/products/detail/txc-corporation/7Z38470005/10492147) vs  
[https://www.digikey.no/en/products/detail/txc-corporation/7Z-38-400MBG-T/5129568](https://www.digikey.no/en/products/detail/txc-corporation/7Z-38-400MBG-T/5129568)

---

<div class="post-metadata">

**Author:** ![Karl\_1696](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Karl\_1696](https://forum.digikey.com/u/Karl_1696)\
**Post date:** [April 19, 2022, 6:38pm UTC](https://forum.digikey.com/t/tcx-corp-tcxo-part-no-compatibility/21676/2 "2022-04-19T18:38:19Z")

</div>

Hello,

The difference is:

7Z38470005 : 1.8V ~ 3.3V

7Z-38.400MBG-T : 3.3V

One fluctuates in voltage while the other has a set voltage.

These are the only differences in the parts.

---

<div class="post-metadata">

**Author:** ![ole.eek](https://avatars.discourse-cdn.com/v4/letter/o/45deac/32.png) [@ole.eek](https://forum.digikey.com/u/ole.eek)\
**Post date:** [April 20, 2022, 7:09am UTC](https://forum.digikey.com/t/tcx-corp-tcxo-part-no-compatibility/21676/3 "2022-04-20T07:09:48Z")

</div>

> [@Karl\_1696](#):
>
> 7Z38470005 : 1.8V ~ 3.3V

Hi,  
What do you mean with “voltage fluctuates”? I thought these voltage levels were referring to the supply voltage range supported, meaning that the 7Z38470005 supports a wider supply voltage range than 7Z-38.400MBG-T?