Author Topic: Hirose connectors - what does the Cavity No. mean?  (Read 931 times)

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Offline carl0sTopic starter

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Hirose connectors - what does the Cavity No. mean?
« on: April 01, 2020, 03:37:13 pm »
On many Hirose connectors, there is a cavity number on them. It's actually a letter, but the datasheet calls it a Cavity No.

Any idea what it is? Is it just a revision number ? That would seem redundant when they have a lot number already.

e.g., page 4 of this d/s http://www.farnell.com/datasheets/2691091.pdf

Somebody just finally bought some of those from me on eBay, and until I took out the microscope I wasn't actually sure I'd found the right part in my collection. I noticed mine say D35 on them.. so they are a D cavity.



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Offline amyk

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Re: Hirose connectors - what does the Cavity No. mean?
« Reply #1 on: April 02, 2020, 12:05:14 am »
The cavity of the mold in which they were originally produced?
 
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Offline fcb

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Re: Hirose connectors - what does the Cavity No. mean?
« Reply #2 on: April 02, 2020, 12:13:25 am »
The cavity of the mold in which they were originally produced?
This.

The injection mold tool will have multiple cavities within it (I've seen them with between 2 and 64), so that each cycle of the tool (10-60 seconds) will produce multiple pieces keeping the cost per piece down. Any wear or faults are more easily traced to that section of the tool.
https://electron.plus Power Analysers, VI Signature Testers, Voltage References, Picoammeters, Curve Tracers.
 
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Offline carl0sTopic starter

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Re: Hirose connectors - what does the Cavity No. mean?
« Reply #3 on: April 02, 2020, 08:34:42 am »
Ah, amazing. Thanks!
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