Alternatives & variations Download PDF datasheet

Power - Beam (NOT sweep) ·BeamPower-Triode

PCL86

Triode beam-power combination valve designed for audio-frequency amplification, integrating a voltage-amplifier triode with a beam-power output stage in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater: 13.3 V / 300 mA

Description

Triode-pentode for high-quality audio voltage amplification and output-power stages.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater voltage: 13.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.0016 S
Amplification factor: 100
Max plate voltage: 300 V
Max plate dissipation: 0.5 W
Max cathode current: 4 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 45000 Ω
Transconductance: 0.0105 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 9 W
Max screen dissipation: 1.8 W
Max cathode current: 55 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
230 V
AudioPreamplifier
Control-grid voltage
-1.7 V
AudioPreamplifier
Plate current
1.2 mA
AudioPreamplifier

Characteristic

Transconductance
1600 µS
Section1
Amplification factor
100
Section1

SECTION 2

Beam Power

Other

Plate voltage
230 V
AudioOutput
Screen voltage
230 V
AudioOutput
Control-grid voltage
-5.7 V
AudioOutput
Plate current
39 mA
AudioOutput
Screen current
6.5 mA
AudioOutput

Characteristic

Transconductance
10500 µS
Section2
Plate resistance
45000 Ω
Section2
Amplification factor
21
Section2

Data set 02

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
13.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
1 W
Maximum Cathode Current
12 mA

Characteristic

Transconductance
1600 µS
Typical
Amplification Factor
100
Typical
Plate Resistance
50000 ohm
Typical

SECTION 2

Beam Power

Other

HeaterVoltageNominal
13.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
9 W
Maximum Screen Dissipation
2.5 W
Maximum Cathode Current
65 mA

Characteristic

Transconductance
10000 µS
Typical
Amplification Factor
10
Typical
Plate Resistance
20000 ohm
Typical

Data set 03

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
13.3 V
Published nominal value
Heater current
300 mA
Published nominal value
Transconductance
1600 µS
Published operating characteristic

Other

Maximum plate dissipation
0.5 W
Published maximum rating
Audio output power
4.1 W
Published quick-reference value

SECTION 2

Beam Power

Characteristics

Heater voltage
13.3 V
Published nominal value
Heater current
300 mA
Published nominal value
Transconductance
10500 µS
Published operating characteristic

Other

Maximum plate dissipation
9 W
Published maximum rating

Data set 04

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Current Ih
3 A
Heater Voltage Vh
13.6 V
Maximum Anode Dissipation pa(max) 05
90 W
Maximum Screen Grid Dissipation pg2(max) —
1.8 W
Maximum Anode Supply Voltage (la = 0) Va(b)max 550
550 V
Maximum Anode Voltage Va(max) 250
250 V
Maximum Screen Grid Supply Voltage (I$2 = 0) Vg2(b)max —
550 V
Maximum Screen Grid Voltage V82(max) —
250 V
Maximum Heater to Cathode Voltage Vh-k(max) 100
100 V
Maximum Cathode Current Ik(max) +0
55 mA
Grid 1 to Heater cgl_h <
24 pF
Grid Triode to Heater cgt_h <
6 pF
Supply Voltage Vb 170 170 170 230 230
230 V

Characteristic

For speech and music —
30 W
Pentode Input Cin(p)
10 pF
Grid 1 to Anode Pentode Cgl_ap <
0.4 pF
Triode Input Cin(t)
23 pF
Triode Output Cout(t)
2.5 pF
Grid Triode to Anode Triode Cgt-ac
1.4 pF
Grid Triode to Grid 1 cgt_gt <
2 pF
Grid Triode to Anode Pentode Cgt-ap <
6 pF
Anode Triode to Anode Pentode Cat-ap <
0.15 pF
Anode Triode to Grid 1 cat_gl <
0.2 pF
Anode Voltage Va 230
230 V
Screen Grid Voltage Vga —
230 V
Control Grid Voltage Vgl —17 —
57 V
Anode Current la 1.2
39 mA
Screen Grid Current IgQ —
65 mA
Mutual Conductance gm 16
10.5 mA
Anode Voltage Va 200
230 V
Screen Grid Voltage Vg, 200
230 V
Quiescent Anode Current la(o> 35
39 mA
Current Igs(o> 6.0
65 mA
Input Voltage (R.M.S.) Vinir.m.,.> 32
36 V
50mW output 029
3 V
Power Output Pout 31
41 W
Anode Current la 082 0.58 037 137 09
57 mA
5% total distortion 9 13 15 15 22
26 V
5% total distortion* 11 16 21 18 26
33 V
Vg =
230 V
u Pa max
-0.5 W

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Anode current Ia
1.2 mA
Transconductance S
1.6 mA/V
Anode voltage vV,
230 V
Anode current L
1.2 mA
Anode current I 0.42 0.52 0.42
0.52 mA
effect in circuits in which an output of
50 mW
Input voltage minimum 10 mVRpg for
50 mW
Grid circuit impedance max. 0.5 M at
50 Hz
150 We
9 W
Vo
200 V
Vo= i T —
2 V
50 b
4 V
_4Vﬂ; I & E =t
6 V
Wo [1]
9 W
Wo [2]
1 %
Wo [3]
230 V
mEmr Y HEFEE
-2 V
%9 Y
200 V
I (ma) Vg,
230 V
d(%) g,
-57 V

Capacitance

Anode to all except grid Ca(g)
2.5 pF
Grid to all except anode Cga)
2.3 pF
Anode to grid Cag
1.4 pF
Grid to heater Cgf max
0.006 pF
Cathode decoupling capacitor minimum
100 pF

Other

Supply voltage Vp 200 230 200
230 V
Va max
300 V
Anode dissipation W, max
0.5 W
Cathode current Ik max
4 mA

SECTION 2

Beam Power

Characteristic

Anode current Iy
39 mA
Transconductance S
10.5 mA/V
Output power Wo
4.1 W
Heater current Ig
300 mA
Heater voltage Vi
13.3 V
1 to all except anode Cgl(a)
10 pF
1 Cagl max
0.4 pF
Grid No.1 to heater Cglf max
0.24 pF
Anode triode to grid No.1 pentode CaTglP max
0.2 pF
Grid triode to grid No.l pentode gTE P max.,
0.02 pF
Anode triode to anode pentode CaTaP max
0.15 pF
Grid triode to anode pentode CgTaP max
0.006 pF
Anode voltage Va
230 V
Grid No.1 voltage Vgl
-5.7 V
Grid No.2 current Igz
6.5 nA
Anode current Iy 35 - 34 39
40.7 mA
ClassA
Grid No.2 current Ig2 6.0 - 9.0 6.5
10.5 mA
Output power W, 0 0.05 3.1 0 0.05
4.1 W
Anode voltage Va, max
550 V
Grid No. 2 voltage Vg20 max
550 V
Vg2 max
300 V
Anode dissipation Wy max
9 W
Grid No. 2 dissipation, average Wg2 max
1.8 W
peak Wgzp max
3.25 W
Cathode current Iy max
55 mA
Grid No. 1 resistor, for automatic bias Rgl max
1 MΩ
to a maximum of
10 MΩ
1. Vo= Vpp
230 V

Capacitance

duced toa value of less than
0.002 pF

Other

Grid No. 2 voltage Vgz 200
230 V
ClassA
(Grid No. 1 voltage) Vgl -4.7
-5.7 V
ClassA