Products > Test Equipment

Hioki IM3570 LCR & Impedance Analyzer

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KungFuJosh:
If the plunger tip is short, what's the difference with the base height matter? Doesn't one length/height make up for the other? I would think 4mm higher base, or 4mm shorter plunger arm should have the same effect?

mawyatt:
There's limits in how the bolt can be used for adjustment, especially so if you use both ends of the bolts as we do. Usually you want the plunger tip to engage the SMD DUT almost vertical and still cover most of the expected components. Having the plunger base too short limits the DUT SMD height, having it too high limits thin SMDs.

We found ~10mm standoff for the Plunger base has worked well for us. We played around with spacers and washers, then 3D printed the standoff plate.

BTW we found you don't want the Plunger Fixture to be extremely rigid, some slight flexing is desirable as in "springiness".

Play around with various adjustments and configurations until you find something to your liking :-+

Best,

Martin72:
I would like the Gerber file of the board... 8)

mawyatt:

--- Quote from: Martin72 on September 15, 2024, 09:11:24 am ---I would like the Gerber file of the board... 8)

--- End quote ---

We've posted details on the thread dedicated to this Unique LCR SMD Fixture. This includes Gerber files for the latest and previous versions of the PCB, and 3D print files for the Plunger Tip and Support Top and Bottom.

Let's try and keep all the discussions related to such on this over here.

https://www.eevblog.com/forum/projects/different-type-lcr-smd-fixture/

BTW we have plans to publish the details of this fixture as well.

Best,

KungFuJosh:
I posted in the other thread, but I'll post it here also since it's relevant to my IM3570. The nylon screw was a success. No modifications, and the screw is flexible enough I can safely position it on 805 SMT stuff with no trouble.

Thanks,
Josh

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