Hackers' Pub

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Andrew Zonenberg @azonenberg@ioc.exchange

3/6/2026, 2:02:26 AM

Public

Pretty happy with the results for a surgical decap.

It looks like the quartz crystal sits on top and the oscillator driver is under it. Unfortunately we can't see the oscillator die without destroying the crystal.

Nothing looks obviously damaged, I'll do some higher mag images next.

Large flat rectangle of quartz crystal with gold plating on the top and bottom sides

Andrew Zonenberg @azonenberg@ioc.exchange

3/6/2026, 2:29:36 AM

Public

Composite of three focal planes (upper bond pads/crystal surface, lower bond pads, top of package) on the Labsmore/Mitutoyo system.

The left two pads clearly have connections to the driver IC but aren't very visible with the DOF of this system at the chosen focal planes.

It's interesting that the quartz is a somewhat textured surface, I expected a mirror polish.

Higher magnification composite image of the oscillator showign the quartz plate and the ceramic package

The quartz crystal has gold plating on the top and bottom connecting to two pads along the right side of the package, More gold pads can be seen underneath, presumably connecting to the driver IC out of view under the crystal

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