Power - Pentode Single (NOT beam) (under 10W) ·Pentode
Indirectly heated power pentode for moderate audio-frequency output amplification.
Indirectly heated power pentode intended for audio-frequency output amplification.
Small-button Noval 9-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | A | G1 — Control Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN2Pin 2 | A | G3 — Suppressor GridGroup BZ2 | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN2Pin 2 | A | K — CathodeGroup BZ2 | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN3Pin 3 | — | H — Heater | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN4Pin 4 | — | H — Heater | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN5Pin 5 | A | P — Plate (Anode) | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN6Pin 6 | A | G2 — Screen Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
| PIN7Pin 7 | A | G1 — Control Grid | Verified Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout |
1 physical section, each with unique specifications.
Section 1
Promoted from the printed maximum-rating/characteristic columns; additional operating-point data retained as section parameters.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Control-grid voltage
-6 V
ClassA
Plate current
30 mA
ClassA
Screen current
3 mA
ClassA
Power output
3.5 W
ClassA
Plate resistance
60000 Ω
ClassA
Transconductance
7000 µS
ClassA
Data set 02
Published operating points and test conditions from this source.
Heater voltage .…............……secrrecerernseriieenserecncoce VÊ
6.3 V
Heater current …œIf
450 mA
Dissipation d'ANOd@ …..……ssereseeesensereenencessercecen. Pä
9 W
Screen-grid dissipation Œ………ceseerenverresessenseccienes P 8
2 W
Tension de crête entre filament et cathode …. 0 VfK
50 V
Tension d'ANOdE …v.sercrerirenseenmennentesesressensnoncemaseesseveess V
250 V
Screen-grid voltage Vg
250 V
Tension de grille n° 1. Ve
-6 V
Plate current à s1gnal nuL aenaserserrennecnaerencrsecerencers 1O SIO
30 mA
Coutant de grille n° 2 à signal nul mrrsseesesesecemesses 182 SiSO
3 mA
Transconductance ……c aacnsasncesessncensecccoseemerecanaecenseuneneese 1D
7 mA/V
Résistance de charge d'anode,....................................... Ra
7 kΩ
Tension d'ENtrÉE ……sesricreimenentesençesentesecene | VE
4.2 Veff
Puissance d@€ SOrtIE ……ussesseesessessenesesssssmsinmes. PS
3.5 W
Capacitance d'entrée ...n CE
8 pF
InterelectrodeCapacitance
Capacitance de sortie ……….….….….….….……. …… Cs
5.5 pF
InterelectrodeCapacitance