The 5726 is a professional double signal diode. These diodes were designed for vision and sound detection. Additionally they are recommended for limiting and DC restoration.
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Looking at the specifications, the 5726 is electrically equal to the EB91 with the exception of the maximum permissible PIV. Higher for the EB91.
Some commercial EB91's are packaged in envelopes some 10 mm taller than this 5726.
The twin diodes with central screen.
Face view of one diode with the Type designation visible on the bulb.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 36 mm tall.
References: Data-sheet & 1040. Type 5726 was first introduced in 1952. See also1952 adverts.
