12BZ7 RAYTHEON | Alldatasheet

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PRAYTHEONS Technical 12BZ7 < : INFORMATION : TWIN TRIODE SERVICE : : MECHANICAL DATA : ; ; ; SBASE. . . . Miniature button 9-pin use os 0 resistance—coupled voltoge amplifier or phose inverter and blocking oscillator. The By design one 12BZ7 section hos choracteristics equivalent to two 12AX7 sections in porallel. : PHYSICAL DIMENSIONS i 7" ELECTRICAL DATA : Pree] i | i i HEATER CHARACTERISTICS: : Fe 3 re Parallel heater conn. Series heoter conn. : 3 ton | F i Heater voltage 6.34 1% 12.6 10%+ volts : 2 sy : g 3 b Heater current 0.60 0.30 omp. : ba .S Moximum heater—cathode voltage: : Pas Heater positive with respect to cathode : 4 ry ee DO ee 100 volts : Total DC and peak... - 1.2505 ae bee tte ee « 200 volts : Heater negative with respect to cathode : BASING 9A Totel DC and peck 22. ee ee ee es 200 volts i 6) DIRECT INTERELECTRODE CAPACITANCES:@ i @ (6) ST Unit #1 Unit #2 : G : XI (7) Grid to plate 0.49 0.45 pf. : (4 Input 65 6.5 ph. : @) 8) Output 0.7 0.55 pf. : ay 5) i BOTTOM VIEW DESIGN MAXIMUM RATINGS: (Eoch Unit) SEE EIA STANDARD RS-239 : Plate voltage 6 380 volts i Grid voltage ok ee 50 volts : Negative-bios value. . . ee ee 50 volts : Positive-bias value. - 2. ee Fe © volts : Plate dissipation . Ce ne we . . 1.65 watt : Grid #l circuit resistence oe 5 nieg. : CHARACTERISTICS AND TYPICAL OPERATION-CLASS Al AMPLIFIER : Plote voltage 100 250 volt : Grid voltage -1 =2 volt, 2 TERMINAL CONNECTIONS Amplificotion factor 100 100 > iin} Plate, unit #2 Plate resistance 40 000 31,800 ohms pin 2 Grid, unit #2 Tronsconductence 2506 3200. jumbo I Pin 4 Cathode, unit #2 Plote current 16 2.3 ma. > Pind Heoter : Pin 5 Heater © Withour shield. I Pin 6 Plote, unit #1 + The equipment des'gner should design the equipment zo that heater current is centered ot the 2 Pin? Grid, unit #1 specified bogey volue. with heater supply variations restricted to maintoin heoter voltage within : Pin Cathode, unit “1 the specified tolerance. : Pin 9 Hecter contor—tep (2 Heater current at bogie heoter voltage. : RAYTHEON COMPANY : 55 Chapel Street - Newton 58, Massachusetts: j March 63 Page 1 of 2

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