Silicon rectifier diodes in D0-4 metal envelope, intended for use in power rectifier applications.
Normal polarity (cathode to stud): BYX38-1200.
These genuine vintage parts came to us as part of a lot of surplus stock from a large ‘Milspec’ type Co.
Having been in storage for many years (date coded 7349) we have classified them as ‘new other’.
These Philips parts are now obsolete!
HOWEVER WE MANAGED TO FIND A DATASHEET – SEARCH BYX38-1200