Hi Peter, see the attached list of the so-called slash sheets of MIL-PRF-3098. There are several items for crystals in HC-6/U holder. Most of the usually define the stability over temperature as a rectangle, i.e. +-x % over a certain temperature range. From that you can calculate, which range of turn-over temperatures are possible. Some of them like CR-47A/U, CR-57A/U, CR-62/U, CR-65/U or CR-142 are specifically defining the turn-over temperature. Please also look for the HC-36/U parts in the table, which is the cold-weld package equivalent to the solder-sealed HC-6/U. Many of these slash sheet items are obsolete, and often they are replaced by the resistance-weld equivalent housings.
If you need a particular detail spec, let me know. Best regards and happy Easter weekend Bernd -----Ursprüngliche Nachricht----- Von: Peter Worrall [mailto:g4gjl...@gmail.com] Can anyone point me to a specification document for CR-31/U and CR-23/U crystals in HC-6/U packages, please. I suspect their turnover temperatures may be defined by the spec, but I cannot find anything online that refers to these particular types.
MiL-CR-Specs.pdf
Description: Adobe PDF document
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