12BL6 GEC | Alldatasheet
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, PENTODE vss Eldlian® FOR RF AND IF AMPLIFIER APPLICATIONS IN AUTOMOBILE TUBES RECEIVERS ———SSSZZDESCRIPTION AND RATING =" The 12BL6 is a miniature remote-cutoff pentode intended for use as a radio- frequency or intermediate-frequency amplifier in automobile radio receivers. The tube is specially designed to operate with its plate and screen voltages BASING DIAGRAM supplied directly from a 12-volt storage battery. GENERAL QO ELECTRICAL i, |_\\ Cathode—Coated Unipotential @) (6) Direct Interelectrode Capacitancest Input oe ee cece eee SS ppt Output. cece cece teeter eter eer AB ppt MECHANICAL Mounting Position—Any TERMINAL CONNECTIONS Envelope—T-5'2, Glass Pin 1—Grid Number 1 Base—£7-1, Miniature Button 7-Pin Pin 2—Grid Number 3 and Internal Shield * When used in automotive service from a 12-volt source, under no circumstances Pin 3—Heater should the heater voltage be less than 10.0 volts or more than 15.9 volts. These Pin 4—Heater extreme variations in heater voltage may be tolerated for short periods; how- Pin 5—Plate ever, operation at or near these absolute limits in heater voltage necessarily Pin 6—Grid Number 2 involves sacrifice in performance at low heater voltage and in life expectancy (Screen) at high heater voltage. Equipment reliability can be significantly increased with Pin 7—Cathode improved supply-voltage regulation. + With external shield (RETMA 316) connected to pin 7. PHYSICAL DIMENSIONS z cE 2g at MAX, | og 4 I pry GENERAL @@ ELECTRIC Ls RETMA 5-2
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