RCA Receiving Tube Mantlal
MEDIUM-MU TWIN TRIODE Glass octal types used as combined
vertical deflection amplifier and ver-tical deflection oscillator in television
receivers. When so operated, it is I recommended that unit No.1 (pins 4, GT2
5, and 6) be used as the oscillator. Outline 14C, OUTLINES SECTION. Tubes require octal socket and may be mounted in any position. Type 6BL7-GT is a DISCONTINUED type listed for reference only.
HEATEI{ VOLTAGE (AC/DC) ... . 6.3 volts HEATER CURRENT ... . 1.5 amperes DIRECT INTERELECTRODE CAPACITANCES (Approx.): Unit No.1 Unit No.2
Grid to Plate. . . . ., . . . 6 6 pf Grid to Cathode and Heater.. . .. . .. . .. .. . .. . . .. . . 4.2 4.6 pf Plate to Cathode and Heater. . . . . 0 . 9 0.9 pI AMPLIFICATION FACTOR* ... . 15
PLATE RESISTANCE (Approx.)* ... . 2150 ohms TRANSCONDUCTANCE" ... . 7000 IJrnhos
" Each unit; for plate volts, 250; grid volts, -9; plate ma., 40.
VERTICAL DEFLECTION OSCILLATOR OR AMPLIFIER"
For operation in a 5ft5-line, 30-frame system
Maximum Ratings, (Design-Center Values): Oscillator AmpHfie,.
DC PLATE VOLTAGE. ... 500 max 500 max volts PEAK POSITIVE-PULSE PLATE VOLTAGEt (Absolute Maximum) .. 2000 "max volts PEAK NEGATIVE-PULSE GRID VOLTAGE. . . . -400 max -250 max volts PEAK CATHODE CURRENT. . . . 210 max 210 ... ax rna AVERAGE CATHODE CURRENT. . . . ... 60 max 60_x rna 184
========-- Technical Data
========--PLATE DISSIPATION:
For either plate ...•... 10 max 10 max watts For both plates with both units operating ... . 12 max 12 max watts
PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... . 200 max 200 max volts Heater positive with respect to cathode ... . 200-max 200-max volts Maximum Circuit Values:
Grid-Circuit Resistance ... . '.7 max '.Hmax megohms
• Unless otherwise specified, values are for each unit.
t The duration of the voltage pulse must not exceed 15 per cent of one vertical scanning cycle. In a 525-line, SO-frame system, 15 per cent of one vertical scanning cycle is 2.5 milliseconds •
• Under no circumstances should this absolute value be ellceeded.
- The dc component must not exceed 100 volts.
*
For cathode-bias operation.Kp 7 G3p
IS
MEDIUM-MU TRIODE-SHARP-CUTOFF PENTODE
Miniature type used in frequency-changer service in television receivers.
Outline 8B, OUTLINES SECTION.
Tube requires miniature nine-contact socket and may be mounted in any position. Heater volts (ac/dc), 6.3; amperes, 0.45.
CLASS Al AMPLIFIER Maximum Ratings, (Design-Center Values):
PLATE SUPPLY VOLTAGE . . • . . . • . . . PLATE VOLTAGE . • . . . . • . . . • . . . GRID-No.2 (SCREEN-GRID) SUPPLY VOLTAGE . . . • . . . . GRID-No.2 VOLTAGE:
With cathode current of 14 rna ... . With cathode current less than 10 rna ... .
CATHODE CURRENT . . . • . • . . . GRID-No.2 INPUT:
With plate dissipation greater than 1.2 watt •...
With plate dissipation less than 1.2 watts ... .
PLATE DiSSiPATION . • . • . . . • . . . ,.
PEAK HEATER-CATHODE VOLTAGE:
Heater negative witb respect to c.athode ... . Heater positive with respect to cathode ... . Characteristics:
Plate Voltage ... . Grid-No.2 Voltage ... . Grid-No.1 Voltage ... . Amplification Factor ... . Mu-Factor, Grid No.2 to Grid No.l. ... . Plate Resistance (Approx.) ... . Transconductance . ... . Plate Current ... . Grid-No.2 Current ... . Input Resistance at frequency of 50 Mc ... . Equivalent Noise Resistance ... . Maximum Circuit Values:
Grid-N o.I-Circuit Resistance:
For fixed-bias operation ... . For cathode-bias operation ... .
MEDIUM-MU TRIODE
Miniature types used as rf ampli-fier tubes in grid-drive circuits of vhf television tuners. The double base-pin connections for both cathode and grid reduce effective lead inductance and
6BL8
RCA Receiving Tube Manual
lead resistance with consequent reduction in input conductance. In addition, the basing arrangement lacilitatesisolation of input and output circuits and permits short, direct connections to base-pin terminals. Outline 7B, OUTLINES SECTION.
Tubes require miniature seven-contact socket and may be mounted in any position.
Type 6BN4 is a DISCONTINUED type listed for reference only.
HEATER VOLTAGE (AC/DC) ... . HEATER CURRENT . . . . DIRECT INTERELECTRODE CAPACITANCES (Approx.):*
Grid to Plate . . . . Grid to Cathode and Heater . . . ..
Plate to Cathode and Heater . . . .
* With external shield connected to cathode.
CLASS Al AMPLIFIER Maximum Ratings, (Design-Center Values):
PLATE VOLTAGE ..
GRID VOLTAGE, Positive-bias value.
PLATE DISSIPATION .. . CATHODE CURRENT .. .
PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode .... . Heater positive with respect to cathode .. . Characteristics:
Plate-Supply Voltage ..
Cathode-Bias Resistor .. . Amplification Factor ... . Plate Resistance (Approx.) ...
Transconductance ..
Grid Voltage (Approx.) f(}r plate current of 100 "a.
Plate Current ...
Maximum Circuit Value:
Grid-Circuit Resistance . . . .
6.3 volts
0.2 ampere
1.2 pf
3.2 pf
1.4 pf
275 max volts
o max volts 2.2 max watts 22 max rna 100 max volts 100 max volts
150 volts
220 ohms
43
5400 ohms
7700 "mhos
~6 volts
9 rna
0.5 max megohm
6BN6
Related types:
3BN6,4BN6
BEAM TUBE
~4
05 GzMiniature type used as combined H 3 6 G3 limiter, discriminator, and audio--volt- . age amplifier in intercarrier television GI z 7 P •
and FM receivers. Outline 7C, OUT- K I LINES SECTION. Tube requires IS
miniature seven-contact socket and may be mounted in any position. Heater volts (ac/dc), 6.3; amperes, 0.3.
LIMITER AND DISCRIMINATOR SERVICE Maximum Ratings, (Design-Maximum Values):
PLATE-SUPPLY VOLTAGE ...•.•...•
GRID-No.2 VOLTAGE ...•... '"
GRID-No.1 VOLTAGE, Positive peak value . . . . CATHODE CURRENT . • . . . PEAK HEATER ,CATHODE VOLTAGE:
Heater negative with respect to cathode ...•...•••
Heater positive with respect to cathode •..••...
o The de component must not exceed 100 volts.
TWIN DIODE-HIGH-MU TRIODE Miniature type used in a wide
6BN8
variety of applications in color andRelated type: black-and-white television receivers.
330 max 110 max 60 max 13 max 200 max 2000max
volts
VOlts
volts rna volts volts
IBNI This type has a controlled heater I
warm-up time for use in receivers em- PD2 KT
ploying series-connected heater strings. The triode unit is used in burst-amplifier, af amplifier, and low-frequency oscillator applications. The diode units are .used 186
========= Technical Data =========
in phase-detector, ratio-detector or discriminator, and horizontal AFC discrimin-ator circuits. Outline 8D, OUTLINES SECTION. Tube requires miniature nine-contact socket and may be mounted in any position.
HEATER VOLTAGE (AC/DC) ... . HEATER CURRENT ... . HF..ATER WARM-UP TIME (Average) ... . DIRECT INTERELECTRODE CAPACITANCES:
Triode Grid to Triode Plate ... . Diode Plate to Diode Cathode and Heater (Each Diode Unit) ... . Diode Cathode to Diode Plate and Heater (Each Diode Unit) ... . Diode Plate to All Other Electrodes (Each Diode Unit) ... .
TRIODE UNIT AS CLASS Al AMPLIFIER Maximum Ratings, (Design-Maximum Values):
PLATE VOLTAGE ... . GRID VOLTAGE, Positive bias value ... . PLATE DISSIPATION ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... . Heater positive with respect to cathode ... . Characteristics:
Plate Voltage ... . Grid Voltage ... . Amplification Factor ... . Plate Resistance (Approx.) ... . Transconductance . ... . Grid Voltage (Approx.) for plate current of 10 I'a ... . Plate Current ... . Maximum Circuit Value:
100 -1 Maximum Ratings, (Design-Maximum Valtles):
PLATE CURRENT (Each Unit):
Peak ...•...•
DC ... ..
PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... . Heater positive with respect to cathode ... . - The de component must not exceed 100 volts.