Dia. : T1, T1-1/4, T1-1/2, T1-3/4.
Base: Bi-Pin.
Filament Shap: C-2R, C-2V, C-2F.
Design Volts: 3V, 5V, 6V, 6.3V, 8V, 12V, 14V, 24V, 28V.
DIA x Length: T2.5 x 8mm, T3 x 9.7mm, T4 x13mm, T5.3 x16mm.