Datasheet · c. 1967
Ise Electronics Itron DG12B Datasheet
Datasheet of the DG12B, the first mass-produced vacuum-fluorescent tube, used in the Sharp CS-16A: ratings, characteristics and outline.
Datasheet · c. 1967
Datasheet of the DG12B, the first mass-produced vacuum-fluorescent tube, used in the Sharp CS-16A: ratings, characteristics and outline.
GENERAL DESCRIPTION Leyi® 6128 numerical indicator tubes provide a highly efficient display of digits and characters at extremely low operating voltages. These single-plane tube read-outs offer low power consumption with rugged construction, and an exceptionally wide viewing angle with unsurpassed brightness and clarity. The numerical figures, mathematical symbols and characters are composed of highly efficient green phosphor-coated segments, energized by electrons emitted from a direct heated super fine cathode. Particularly suited to decimally coded applications such as basic counters and computer circuits, Leyi ® DG12.8 indication tubes display decimal points and numerical figures “0” through “9”. e Uni-Plane Design e low Voltage e Sharp, Bright Green Characters e Low Power Consumption ELECTRICAL CHARACTERISTICS Cathode. Direct heating Filament current 95mA Filament voltage at 95mA 0.85Volts + 10% Color of figures Green Brightness 80Foot-lamberts ABSOLUTE MAXIMUM RATINGS Maximum voltage, phosphor segments 27Vdc Maximum pulse voltage upon phosphor segments 66Vp-p Minimum voltage, phosphor segments 15Vdc Maximum screen grid (control grid) 27Vdc Maximum pulse voltage upon screen grid (control grid) 66Vp-p Minimum screen grid (control grid) 15Vde Maximum filament current 105mA AVERAGE RATINGS (D.C.) Cathode current (at 20 Volts of phosphor segment and grid voltage) 6.0mA Numerical phosphor segments current 1.2mA Current to decimal point, “e” “yp” 0.1mA Ambient temperature -10 to +70°C (Actual Size) TYPICAL OPERATION Pulse (Not to exceed 66Vp-p Max. THRs: GP CREATIONS pees | Duty 1/4 a 1/8 | Duty ig Duty 1/20 Filament (at 95mA) 0.85V 0.85V 0.85V 0.85V 0.85V Phosphor segments & Screen grid(control grid) 20V 30Vp-p 7 40Vp-p 55Vp-p 60Vp-p Screen grid (control grid) cut off voltage — 4V — 4Vp-p — 4Vp-p — 4Vp-p —-4Vp-p Phosphor segments cut off voltage OV OV OV OV OV MECHANICAL DESIGN EXTERNAL DIMENSIONS 2.086” Max. 0.53” Max. 90.0 degree Overall Length Diameter of glass tube Maximum viewing angle Net weight 7.0gr Mounting Position Optional Base cf. drawings CHARACTER DIMENSIONS Numerials Height: 0.606” Width: 0.315” Decimal point Diameter: 0,078” CHARACTER OUTLINES (Actual Size) p *) fl f O cy © OUTLINE DRAWING UNIT : INCH MAX. 0.53 DIA._-4 __fi2) 10 t ' 0. 16 DIA. MAX / a he 0.039 oa Ss & N 3 Oo bs 4 — ee 3S S CENTER OF 2s z SEGMENT No.4 © Ss nN 2 te 3s ¢ a i H 8 0.039 Ss BS A 3 7 ma 3 i (8) 2 0.315 oO 0.078 DIA. / CHARACTER WIDTH 0.26 CHARACTER SLANT 9° 3S 3 H F (14) 0.018 DIA Ze UUUUL DIA. 0. 276 SYMBOLS: F: FILAMENT (RED SLEEVE) G: GRID BOTTOM_VIEW For further information and prices, please contact: PRINTED IN JAPAN