RCA Receiving Tube Mantlal
SHARP-CUTOFF PENTODE Miniature types used in compact
radio equipment as rf amplifier espe-cially in high-frequency, wide-band ap-plications; also used as limiter tube in
H Gz
controlled heater warm-up time for use in applications employing series-connected heater strings. Outline 7B, OUTLINES SECTION. Tubes require miniature seven-contact socket and may be operated in any position. For a discussion of limiters, refer to ELECTRON TUBE APPLICATIONS SECTION. For typical oper-ation as resistance-coupled amplifier, refer to RESISTANCE-COUPLED AM-PLIFIER SECTION. Type 6AU6 is a DISCONTINUED type listed for
Grid No.1 to Cathode. Heater. Grid No.2. Grid No.3.
and Internal Shield ...•
Plate to Cathode. Heater. Grid No.2. Grid No.3. and Internal Shield ... . Triode Connection:t
Grid No.1 to Plate. Grid No.2. Grid No.3. and Internal Shield ... . Grid No.1 to Cathode and Heater ... " .... . Plate. Grid No.2. Grid No.3. and Internal Shield to
Cathode and Heater ... . - With external shield connected to cathode.
t Grid No.2. grid No.3. lind internal shield connected to plate.
CLASS Al AMPLIFIER Maximum Ratings, (Design-Maximum Values):
PLATE VOLTAGE ... " •••.•...••.
GRID-No.3 (SUPPRESSOR-GRID) VOLTAGE. Positive value ... . GRID-No.2 (SCREEN-GRID) VOLTAGE ...•...
GRID-No.2 SUPPLY VOLTAGE ...•...
PLATE DISSIPATION ...••....•.•...•
=========- Technical Data
=========-GRID-No.2 INPUT:
For grid-No.2 voltages up to 165 volts ... . For grid-No.2 ¥QUaKes between 165 and 330 volt •...
GRID-No.1 (CONTROL-GRID) VOLTAGE:
Positive-bias value ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ...•
Heater positive with respect to cathode ... .
o max
200 max 200Amax
0.75 max watt See curve page 70
o max volts 200 max vol ts 200Amax volts Characteristics: Connection Triodet
250
Penlode Connection
Plate Supply Voltage ...••... 100 250 250 volts
Grid No.3 ... . Connected to cathode at socket
Grid-No.2 Supply Voltage ... . 100 125 150 volts
Cathode-Bias Resistor ... . 330
36 150 100 68 ohms
Amplification Factor ... .
Plate Resistance (Approx.) ... . 0.5 3900 -4.2 5.0 2.1
1.5 4500 -5.6 7.6 3.0 Transconductance ... . 4800
Grid-No.1 Voltage for plate current of 10 I'a •...
Plate Current ... . 12.2 Grid-No.2 Current .•..•... , ..•
t Grid No.2, grid No.3, and internal shield connected to plate.
A The de component must not exceed 100 volts.
2
•
4
o
AVERAGE CHARACTERISTICS
TYP[ 6AU6
l.1
Ef = 6.3 VOLTS
GRID Nt 3. A'NO INTERNAL. SHIELD CONNECTED TO CATHODE AT SOCKET.
GRIO-Nt2 VOLTS =100
/'
r
).c
r
tb [CI=O
f-"'
-0.&
GRIO-NI I VOLTS Eel = "1.0
~ _ _ ICL_ [CI=O
lb
100
"I.~
-2.0 -2.&
200 300 400
-
$00PLAT[ VOLTS
MEDIUM-MU TWIN TRIODE
Miniature type used as phase inverter or amplifier in television',receivers employing series-connected heater .·trings. Outline 8B, OUT-LINES SECTION. Heater volts (ae/de), 6.3 (series), 3.15 (parallel); amperes, 0.3 (series), 0.6 (parallel); warm-up time (average) in paral-lel arrangement, 11 seconds. Except for heater and heater-cathode ratings, this type is identical with miniature type 12AU7. The 6AU7 is a DISCONTINUED type listed for reference only.
MEDIUM-MU TRIODE-SHARP-CUTOFF PENTODE
Miniature types used in television receiver applications. Tubes have con-trolled heater warm-up time for use in series-heater strings. Pentode unit is used as video amplifier, if amplifier,
600
1.0 6200 -6.6 10.6 4.3
megohms I'mhos volts rna rna
92CIA-66I1TI
6AU7
6AU8
6AU8A
Related Iype:
8AU8
agc amplifier. Triode unit is used in sync-amplifier, sync-separator, sync-clipper, and phase-inverter circuits. Outline 8D, OUTLINES SECTION. Tubes require nine-contact socket and may be mounted in any position. Type 6AU8 is a DIS-CONTINUED type listed for reference only.
RCA Receiving Tube Manual
HEATER VOLTAGE (AC/DC) ..•.•...•.•.•.•...•...•...
HEATER CURRENT ...•...•...•...
HEATER WARM-UP TIME (Average) ..•..•...•...•...•...•
DIRECT INTERELECTRODE CAPACITANCES:
Triode Unit:
Grid to Plate ...•...•...
Grid to Cathode and Heater .•...•
Plate to Cathode and Heater ...•...•...
Pentode Unit:
Grid No.1 to Plate ... . Grid No.1 to Cathode, Heater, Grid No.2, Grid No.3, and Internal Shield Plate to Cathode, Heater, Grid No.2, Grid No.3, and Internal Shield ....
Triode Grid to Pentode Plate ...•.•...
Pentode Grid No.1 to Triode Plate ...•...••...
Pentode Plate.to Triode Plate ... . 6.3 Maximum Ratings, (Design-Ma.>:imum Values): Triode Unit Pentade Unit PLATE VOLTAGE ... . 330 ma.>: 330 max volts
For grid-No.2 voltages up to 165 volts ... . For grid-No.2 voltages between 165 and 330 volts ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... . Heater positive with respect to cathode ... . Characteristics:
Plate Supply Voltage ... . Grid-No.2 Supply Voltage ... . Cathode-Bias Resistor ... . Amplification Factor ... . Plate Resistance (Approx.) ... . Transconductance ... . Grid-No.1 Voltage (Approx.) for plate current of 100 "a .... . Plate Current ... . Grid-No.2 Current ... . Maximum Circuit Values:
Grid-No.1-Circuit Resistance:
For fixed-bias operation ... . For cathode-bias operation ... .
• The de component must not exceed 100 volts.
zontal deflection amplifiers in
tele-VISIOn receivers employing either H 2 7 H
transformer coupling or direct
cou-pling to the deflecting yoke. 6AV5-GA Gil e G2
Outline 19B, 6AV5-GT Outline 14C, OUTLINES SECTION. Tubes require octal socket and may be mounted in any position. Type 6A V5-GT is a DISCONTINUED type listed for reference only.
HEATER VOLTAGE (AC/DC) ... . HEATER CURRENT ... ~.
TRANSCONDUCTANCE* ... . Mu FACTOR, Grid No.2 to Grid No.1 ••..•.•...•...•
* Plate volts, 250; grid-No.2 volts, 150; grid-No.1 volts, -22.5.
**
Triode connected; plate and grid-No.2 volts, 150; grid-No.1 volts, -22.5.HORIZONTAL DEFLECTION AMPLIFIER For operation in a US-line, 30-/rame 8y"tem Maximum Ratings, (Design-Center Values):
DC PLATE VOLTAGE ... . PEAK POSITIVE-PULSE PLATE VOLTAGEt (Absolute Ma.>:imum) ..•...•...•
PEAK NEGATIVE-PULSE PLATEVOLTA(}E •...•...•..•... ; .••...
DC GRID-No.2 (SCREEN-GRID).VOLTAGE ... ..
PEAK NEGATIVE-PULSE GRID-No.1 (CONTROL-GRID) VOLTAGE .••••••.••.•.
158
PEAK CATHODE CURRENT ...• 400 max ma AVERAGE CATHODE CURRENT ...•... 110 max ma GRID-No.2 INPUT ... .. 2.5 max watts PLATE DISSIPATIONtt ..•... " ... , . " ... '" ... . 11 max watts PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... ..
Heater positive with respect to cathode ... . BULB TEMPERATURE (At hottest point) ...•....•
200 max volts 200-max volts 210 max °c
Maximum Circuit Value:
Grid-No.1 Circuit Resistance ..••••... 0.47 max megohm t The duration of the voltage pulse must not exceed 15 per cent of one horizontal scanning cycle. In a 525-line, 30-frame system, 15 per cent of one horizontal scanning cycle is 10 microseconds.
° Under no circumstances should this absolute value be exceeded.
tt An adequate bias resistor or other means is required to protect the tube in the absence of excitation.
- The de component must not exceed 100 volts.
TWIN DIODE-HIGH-MU TRIODE Miniature type used as combined detector, amplifier, and avc tube in automobile and ac-operated radio re-ceivers. The 6A V6 may be substituted
GT directly for the 6AT6 in applications where the higher amplification of the 6A V6 is advantageous.
HEATER VOLTAGE (AC/DC) .•.•••••...•..•...•.•... " •.••.•••.
HmATER CURRENT ••••••••...•..•....•..•...•...•...••...
DIRECT INTERELECTRODE CAPACITANCES:
Triode Grid to Triode Plate ... . Triode Grid to Cathode and Heater ... . Triode Plate to Cathode and Heater ... . Plate of Diode Unit No.2 to Triode Grid ... " .... . - With external shield connected to cathode.
Without External Shield
2.0 2.2 0.04 max 0.8
TRIODE UNIT AS CLASS AI AMPLIFIER Maximum Rating, (Design-Maximum Value):
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 •.••.••••..•...•...•. " . . . • • . . . • 100 Grid Voltage. ... -1 Amplification Factor... 100
4
3
2
AVERAGE PLATE CHARACTERISTICS TRIODE UNIT
1{-1
TYPE 6AV6 E.r= 6.3VOLTSflj l!
V / / / ?J
11r;-~
I I I
v V / / / :;
'/1// /
J ,,,'?
/ / / / :7.~
~~0~~
VVV~
o '00 00 300 400 500
PLATE VOLTS
6AV6
Related types:
3AV6, 4AV6, 12AV6
6.3 0.3 With External
Shield-2.0 2.2 0.04 max 1.2
330 max
o max 0.55 max 200 max 200·max 250 100 -2
92C~-"7'T
volts ampere
pf pf pf pC
volts volt.
watt volts volts volts volts
RCA Receiving Tube Manual
Plate Resistance ...•...•...
Transconductance ...•...
Plate Current ...•...
DIODE UNITS Maximum Rating, (Design-Maximum Value):
80000 unit. Each diode plate has its own base pin. Diode biasing 01 the triode unit is not recommended.
AVERAGE DIODE CHARACTERISTICS
HALF-WAVE R[CTIFICA110N-SINGLE DIODE UNIT
INSTALLATION AND APPLICATION Type 6AV6 requires miniature seven-contact socket and may be mounted in any position.Outline7B,OUTLINESSECTION.
The triode unit of the 6AV6 is recom-mended for use only in resistance-coupled circuits. Refer to the RESISTANCE-COU-PLED AMPLIFIER SECTION for typical operating conditions. should not be obtained by the diode-biasing method because of the probability of plate-current cutoff, even with relatively small
sig-nal voltages applied to the diode circuit.
/
~E:J:~ variety of applications in television receivers. These types have a con-trolled heater warm-up time for use in receivers employing series-connectedH
heater strings. The pentode unit is used as an if amplifier, video amplifier, agc amplifier, or reactance tube. The triode unit is used in low-frequency oscillator, sync-separator, sync-clipper, and phase-splitter circuits. Outline 8D, OUTLINES SECTION. Tubes require miniature nine-contact socket and may be mounted in any position. Type 6AW8 is a discontinued type listed for reference only.
HEATER VOLTAGE (AC/OC) ...•...•...•.. '"
HEATER CURRENT ... . HEATER WARM-UP TIME (AVERAGE) ...•... '"
DmECT INTERELECTRODE CAPACITANCES: Without Triode Unit:
Grid to Plate ..••...•...
Grid to Cathode, Pentode Cathode, Pentode Grid No.3, Internal Shield, and Heater ... . Plate to Cathode, Pentode Cathode, Pentode Grid No.3,
Internal Shield, and Heater ...•...
Pentode Unit:
Grid No.1 to Plate ....•...
Grid No.1 to Cathode, Heater, Grid No.2, Grid No.3, and Internal Shield ...••.•.•
Plate to Cathode, Heater, Grid No.2, Grid No.3, and In-ternal Shield ...•...
Pentode Grid No.1 to Triode Plate ...•...
Pentode Plate to Triode Plate •..••...
- With external shield connected to pins 4 and 5.
160
--======== Technical Data
--=======~ Maximum Ratings, (De8ign-M...,imum Values):PLATE VOLTAGE ... . GRID-No.2 (SCREEN-GRID) SUPPLY VOLTAGE ... . GRID-No.2 VOr.TAGE ... . GRID-No.1 (CONTROL-GRID) VOLTAGE:
Positive bias value ...•...•.•.•...•
PLATE DISSIPATION ...•...
GRID-No.2 INPUT:
For grid-No.2 voltages up to 165 volts ...•...•
PEA~t~r:.!.~;:~C2A;~~~~Vg~~'Z~~ 165 and 330 volts .••••
Heater negative with respect to cathode ...•...
Heater positive with re.pect to cathode ••.••...•
50.
Characteristics: Triode Unit
Plate Supplv Voltage. . . • • . .. . . .. .. . . • . . . .. . . • . . . 200 Grid-No.2 Supply Voltage ...•...•...
Grid-No.1 Voltage... -2 Cathod .... Bia. Resistor .•..•...•...
Amolification Factor. . . .. .. . . .. • .. . . .. . . . .. . 70 Plate Resistance (Approx.) ..•...•...
Tran.conductance. . . 4000
RCA Receiving Tube Manual
Plate Current •.•••.•.•...•.•..•...•....••..•.•.•.•...
Grid-N 0.2 Current .•••••••...•...••.•.•
Maximum Circuit Values:
Grid-N o.l-Circuit Resistance:
For fixed-bias operation ..•..••.•.•.•.•...•.•.•....•
For cathode-bias operation •••••...•...
·The dc component must not exceed 100 volts.
4
0.5 max 1. 0 max
HALF-WAVE VACUUM RECTIFIER
6AX3
Related types:
12AX3, 17AX3
Duodecar type used as damper tube in horizontal-deflection circdts of television receivers. Outline 12C, OUTLINES SECTION. Tube
re-15 rna
3.6 rna
0.25 max megohm 1.0 max rnegohm
K
quires 12-contact socket and may be H H
mounted in any position. Socket terminals 5, 6, 8, and 9 should not be used as tie points. It is especially important that this tube, like other power-handling tubes, be adequately ventilated. Heater volts (acjdc), 6.3; amperes, 1.2.
DAMPER SERVICE
For operation in a 525~line, 30-frame system Maximum Ratings, (Design-Maximum Values):
PEAK INVERSE PLATE VOLTAGEo.
PEAK PLATE CURRENT.
DC PLATE CURRENT ... . PLATE DISSIPATION ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode.
Heater positive with respect to cathode.
Characteristics, Instantaneous Value:
Tube Voltage Drop (or plate current o( 250 rna
5000 max volts 1000 max rna 165 max rna 5.3 max watts 5000"max volts 300-max volts
32 volts
o The duration of the voltage pulse must not exceed 15 per cent of one horizontal scanning eycle. In a 525-line, 30-frame system, 15 per cent of one horizontal scanning cycle is 10 microseconds.
• The dc component must not exceed 900 volts .
• The de component must not exceed 100 volts.
6AX4GT
HALF-WAVE VACUUM RECTIFIER Glass octal types used as damper K 3*P
6AX4GTB
tube in horizontal deflection circuits ofRelated types: television receivers. Outline 14C,OUT- Ie 2 7 H
W:·::Jt.'111t:4~1:: LINES SECTION. May be supplied I 8
25AX4GT with pin No.1 omitted. Tubes require I H
octal socket and may be operated in any position. Socket terminals 1, 2, 4, and 6 should not be used as tie points. It is especially important that these tubes, like othet power-handling tubes, be adequately ventilated.
HEATER VOLTAGE (AC/DC) •..••...•... " ...•...•..•••••
HEATER CURRENT ...•..•...•...•...•....•...
DIRECT INTERELECTRODE CAPACITANCES (Approx.):
Cathode to Plate and Heater ... . Plate to Cathode and Heater ... . Heater to Cathode ... .
DAMPER SERVICE
For operation in a 525-line, 30-frame sY8tem Maximum Ratings, (Design-Maximum Values):
PEAK INVERSE PLATE VOi.'1'AGEIi . . . PEAK PLATE CURRENT.
DC PLATE CURRENT ....
PLATE DISSIPATION. .. . ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ... . Heater positive with respect to cathode .... .
162
6L1X4-GT 4400 max 825 max 137 ma.x 5 max 4400-max 300Dmax
6.3 volt.
1.2 amperes
R.5 pC
5 p(
4 p(
6AX4-GTB 5000 max volts 1000 max rna 165 max rna 5.3 max watts 5000"max volts 3000max volts
Charaderistics, Instantaneous Test Condition.
Tube Voltage Drop for plate current of 250 ma. . . 32 32 volts
• The duration of the voltage pulse must not exceed 15 per cent of one horizontal scanning cycle. In a 526-1ine, 30-frame syatem, 15 per cent of one horizontal Bcanning cycle is 10 microseconds •
• The de component must not exceed 900 volts.
cThe de eomponent must not exceed 100 volts.
1'D23 FULL-WAVE VACUUM RECTIFIER
,
~PD!
2 . 7
H H
Glass octal type used in power
supply of radio equipment having mod-
6AX5 G T
erate dc requirements. Outline 14 C,
I 8
He K OUTLINES SECTION. This type may be supplied with pin No.1 omitted.
Tube requires octal socket and may be mounted in any position. It is especially important that this tube, like other power-handling tubes, be adequately ventilated.
Heater volts (ac), 6.3; amperes, 1.2.
FULL-WAVE RECTIFIER Maximum Ratings, (De.ign-Cenler Values):
PEAK INVE1I8E PLATE VOLTAGE ..•...•.•...••
PEAK PLATE CURRENT (Per Plate) ...••...•..•..•...
HOT-SWITCHING TRANSIENT PLATE CURRENT
l"or duration of 0.2 second maximum ... . AC PLATE SUPPLY VOLTAGE (Per Plate, rms) ...•...•...
DC OUTPUT CURRENT (Per Plate, rma) ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with respect to cathode ...•...•...•..•...•
Heater positive with respect to cathode ... ..
Typical Operation with Capacitar Input to Filter.
AC Plate-to-Plate Supply Voltage (rma) .•...••....•.•.•.•.•.•
Filter Input Capacitor'" ... ..
Effective Plate-Supply Impedance Per Plate ••.•...•
DC Output Voltage at Input to Filter (Appro".):
A t half-load current of
1
62 . 5 rna ..•...40ma ... . At full-load current of { 125 ma ••••••.••••••••.••.••••••
80 rna ... . Voltage Regulation (Appro".):
Half-load to full-load current ... ..
Typical Operation with Choke Input to Filter.
AC Plate-to-Plate Supply Voltage (rma) •.•••..•...•.•.•.•.•.•
Filter Input Choke ..••...•...•...•....•.•.•••....•.•
DC Output Voltage at Input to Filter (Approx.):
At half-load current of { 75 rna ... . 62.5 rna ...•....•.•.••.•.•••.•••.
At full-load current of { 150 ma •••••••••••••••••••••••••
125 rna ••.•••••••...•...•.•...
... ..
...
..J..
ffi..
.. 80~ ~
~ 60
..J
24 0
..
~ ~ 2 0u
"
RATING CHART TYPE 6AX5-GT
E,.6.3 VOLTS
MAXIMUM OPERATING VALUES WITH:
r
CHOKE-INPUT FILTER '':: CAPACITOR -INPUT FILTER F A75 _!!2.~ ~ __
IS; ~
~CI ,1"\
, , 'D
I
,
, ,
, ,
5.' '35'; G 450
o 100 200 300 400 500
700 10 50 895 350 45
700 10#
270 250
AC PLATE SUPPLY VOLTS (RMS) PER PLATE (WITHOUT LOAD) 92CS-7383TI
1260 maz volts 375 max rna 2.6 maz amperes See Rating Chart See Rating Chart 460 m..., volts 450 maz volts
900 volta
10 "f
105 ohm.
volts
540 volts
volts
490 volta
50 volts
900 volts
10## henries volts
365 volta
volts
850 volta
RCA Receiving Tube Manual
Voltage Regulation (Approx.):
Half-load to full-load current ... . 20 15 volta
• Higher values of capacitance than indicated may be used but the effective plate-supply impedance may have to be increased to prevent exceeding the maximum rating for hot-switching transient plate current.
# This value is adequate to maintain optimum regulation provided the load current is not less than 30 rna. For load currents less than 30 rna, a larger value of inductance is required for optimum regulation.
# # This value is adequate to maintain optimum regulation provided the load current is not less than 35 rna. For load currents less than 35 rna, a larger value of inductance is required for optimum regulation.
6AX8
MEDIUM-MU TRIODE-SEMIREMOTE-CUTOFF PENTODE
Miniature type used in television-receiver applications; the pentode unit is used as a video amplifier; the triode unit is used as a sync separator. Out-line SB, OUTLINES SECTION.Tube
H
Kp.G3p 1 IS
requires miniature nine-contact socket and may be mounted in any position.
HEATER VOLTAGE (AC/DC) ... . HEATER CURRENT .. '" . " ... " ... '" ... '" ... . DIRECT INTERELEC,TRODE CAPACITANCES:o
Triode Unit: Maximum Ratings, (Design-Center Val"es):
PLATE VOLTAGE ... . GRID-No.2 SUPPLY VOLTAGE ..
GRID-NO.2 (SCREEN-GRID) VOLTAGE.
GRID-NO.1 (CONTROL-GRID) VOLTAGE.
PLATE DISSIPATION . GRID-No.2 INPUT
For grid-No.2 voltages up to 150 volts ... . For grid-N 0.2 voltages between 150 and 3QO volts ... . PEAK HEATER-CATHODE VOLTAGE:
Heater negative with fP-spect to cathode ... " ... .
Maximum Circuit Values:
Grid-No.1 Circuit Resistance:
Triode Unit
° With external shield connected to cathode oC unit under test except as noted.
• With external shield connected to ground.
164
========;;;; Technical Data
========-HALF-WAVE VACUUM RECTIFIER