a Cylindrical design with axial leads for simple handling and installation " Compact, hermetically sealed metal case (0.405" max. length;
0.240" max. dia. ) " Insulated types 1N3253, 1N3254, 1N3255, 1N3256, and 1N3563
have transparent, high.
dielectric-strength plastic sleeve over metal case
RCA.
1N3193, lN3194, lN3195, lN3196, lN3253, lN3254, lN3255, lN3256,and lN3563 are hermefically sealed silicon rectifiers of the diffused.