A3064

G.6.C! R.F. PENTODE A3064 - VALVES ISSUE 1 An r. f. pentode suitable for use in applications where long life and close control of characteristics are required. - The A3064 will replace the CV138, CV4014 and Z77 in most applications. BASE CONNECTIONS AND VALVE DIMENSIONS Ih ha Base: Small-button miniature (B7G) Bulb: Tubular k g3,S Max. overall length : 54.5mm Max. seated length: 47.5mm gl gz Max. diameter: 19mm Viewed from underside of base. 6.3 V 0.3 A MAXIMUM RATINGS (Absolute) Va(o) Va 550 300 Pa I Vg2(o) Vg2 Pg2 2.5 450 300 0.8 Rgl-k 0.5 Vh-k (heater positive) 100 -Vh-k (heater negative) 250 Tbulb 200 V V W V V W MQ V V °C CAPACITANCES (Measured on a cold screened valve) Cgl-alliess a: 6.5-8. 7pF ca-alliess gl: Ca-gl: O.OlpF (max) 2.75-3. 75pF THE M-O VALVE CO. LTD· BROOK GREEN WORKS· LONDON· W.6 -.------------------------------------------------------------------------------SEPTEMBER 1963 A3064 CHARACTERISTIC SPREAD Measured at : Va Vg2 Vg1 Rk 250 250 0 160 V V V Q *Ia Ig2 *gm -Ig Ia (at -Vgl ~ 8V) *f.1 *-Vg3 (at -Vgl ~ 3.5V, Ia ~ 50f.1A) Ih Min. 8.7 1.8 6.8 60 70 275 Mean 9.85 2.6 7.62 75 95 300 Max. 11. 0 3.4 8.43 0.5 100 89 120 325 rnA rnA mA/V f.1A f.1A V rnA *These tests are performed on a sample basis only, and the figures given are of the average spread. LIFE PERFORMANCE The average life expectancy of the A3064 is at least 10,000 hours. In order to obtain maximum life, the valve must be operated within the rating...