Datasheet

Page 1
TECHNICAL DATA
Produktbild
Characteristics
Electrical
Heater: Min. Nom. Max.
Voltage (AC or DC) 5.8 6.3 6.8 V
Current 1.5 A
Cathode: Oxide-coated, unipotential
Cathode-to-heater potential, max. +100 V
Direct interelectrode capacitances, max.***
Grid no.1 to cathode and grid no.3, grid no.2,
base sleeve and heater <15.2 pF
Plate to cathode and grid no.3, grid no.2,
base sleeve and heater <8.5 pF
Grid no.1 to plate <1.10 pF
Mechanical
Operating Position Vertical, not horizontal
Base JEDEC #8ET, octal, 8-pin
Dimensions:
Height 114 mm (4.488”)
Seated height 101 mm (3.976”)
Diameter 36 mm (1.417”)
Cooling Convection
Approximate net weight 50 g (1.76 oz.)
***Without external shielding, nominal values
AF Power Amplifier
Maximum ratings
DC plate voltage 800 V
Grid no.2 DC (screen) voltage 500 V
Grid no.1 (control) voltage - 300 V
DC cathode current 150 mA
Plate dissipation
25 W
Grid no.2 DC (screen) dissipation 8 W
Typical Operation
AF Power Amplifier, Class A1 (single tube)
Plate Voltage 264 V
Grid 2 Screen Voltage 250 V
Grid 1 Control Voltage* -13.5 V
Peak AF Grid 1 Control Voltage 8.7 V
Zero Signal Plate Current 70 mA
Maximum Signal Plate Current 100 mA
Zero Signal Grid 2 Screen Current (avg) 14.9 mA
Transconductance (nominal) 11,500 mS
Load Resistance 2000 Ohms
Output Power at 13% distortion 11 W
* Approximate Value (set to zero signal plate current)
TAD – EL34B-STR
High Performance Audio Beam Power Pentode
The TAD EL34B-STR is a close remake of the British Mullard EL 34 and one of the most popular
TAD Tubes. The clear and harmonic top end allows great clean tone and at same time the TAD
EL34B-STR offers a mind blowing powerful mid and bottom end. It offers the highest TC (Gm)
ratings of all EL34 options resulting in a very dynamic tone. Pushed to overdrive this turns into the
perfect lead sound with lots of sustain and crisp attack.
This sonical masterstroke is the trademark of the TAD EL34B-STR tube qualifying it to be the best
choice to achieve that big tone of the legendary British guitar amps but also is first choice for high-
end hi-fi audio amps.
The TAD EL34B-STR can replace any 6CA7 or KT77.
Typical Performance EL34B Curve
Outline View Bottom View
Octal Base Connections
Version 1.3 08.07.2011
ca.