the 1S689 is a germanium diode, U = 200V, I = 6A, applications: TV damper diode
Epitaxial planar silicon diode arrays ,ultra high speed switching
Silicon-Twin Diodes
1N6274 VOLTAGE SUPPRESSOR 13V 1500W MOTOROLA 13 V, 1 mA, 1500 W unidirectional and bidirectional transient voltage suppressor diode
