ZS72 silicon diode - Ferranti

early ZS72 silicon diode by Ferranti.  

U = 400V, I = 500mA   One of the rarer axial versions from Ferranti.   

6.1mm diameter x 11mm long  0.75 x 29mm long gold plated leads.   

Status: RNOS (Rare New Old Stock)

 Circa late 60's  

RoHS compliant: no