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Telefunken EL84-TK Black Diamond Series Vacuum Tube

BH #TEEL84TK • MFR #EL84-TK
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Telefunken EL84-TK Black Diamond Series Vacuum Tube
Key Features
  • Pentode Output Tube
  • Ideal for Guitar Amps & Hi-Fi Gear
  • Ideal Replacement for EL84/6BQ5
  • Distinctive Chiming & Articulate Sound
The Telefunken EL84-TK Black Diamond Series Vacuum Tube is ideal for use in guitar amplifiers and hi-fi equipment in homes, studios, and live stage applications. For personal enjoyment or commercial recording, it grants a detailed, bell-like chime and clearly distinguished sound. In a smaller footprint than an EL34, this pentode tube delivers a characteristic "British" tone and up to 17W of output power.
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Telefunken EL84-TK Overview

The Telefunken EL84-TK Black Diamond Series Vacuum Tube is ideal for use in guitar amplifiers and hi-fi equipment in homes, studios, and live stage applications. For personal enjoyment or commercial recording, it grants a detailed, bell-like chime and clearly distinguished sound. In a smaller footprint than an EL34, this pentode tube delivers a characteristic "British" tone and up to 17W of output power.

Ideal replacement for any EL84/6BQ5 tube
Thermionic valve of the power pentode type
Great for guitar amplifiers and hi-fi equipment
Originally designed for the output stages of audio frequency amplifiers
Delivers up to 17W while remaining compact
Similar to an EL34 with a lower output power
When overdriven, EL84 power tubes contribute to a distinctive chiming and articulate sound when compared to 6L6 tubes
Each tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics
Tubes are selected by hand, rigorously tested, subjected to an extended burn-in period for stability, and remeasured before final packing
UPC: 899051002527

Telefunken EL84-TK Specs

Mechanical
Type
R.F. output pentode
Base
Noval
Number of Pins
9
Heater Requirements
Voltage
6.3 V
Current
760 mA
Direct Interelectrode Capacitances
Capacitance
Grid #1 to Cathode: 10 pF
Plate to All Except Grid #1: 5.1 pF
Grid #1 to Plate: 0.6 pF
Grid #1 to Heater: 0.15 pF
Maximum Ratings
Voltage
Plate Voltage: 300 V
Grid #2: 300 V
Grid #1: -100 V
Cathode to Heater Voltage: 100 V
Current
Cathode Current: 65 mA
Dissipation
Plate Dissipation: 12 W
Grid #2 Dissipation: 2 W
Resistance
Grid #1 Resistor (Automatic Bias): 1 MOhm
Grid #1 Resistor (Fixed Bias): 0.3 MOhms
Typical Operation and Characteristics
Voltage
Plate Voltage: 250 V
Grid #2 Voltage: 250 V
Grid #1 Voltage: -7.3 V
Grid #1 Driving Voltage (when PO = 50 mW): 0.3 V
Grid #1 Driving Voltage (when PO = 6 W): 4.3 V
Current
Plate Current: 48 mA
Grid #2 Current: 5.5 mA
Transconductance
11.3 mA/V
Resistance
Cathode Resistor: 135 Ohms
Plate Resistor: 5.2 kOhms
Internal Plate Resistance: 40 kOhms
Output Power
5.7 W @ 10% THD with fixed grid bias
6 W when Ig1 = 0.3 µA
Amplification
Amplification Factor: 19 µ
Physical Characteristics
Dimensions (H x Diam.)
2.81 x 0.87" / 71.4 x 22.0 mm (excluding pins)
3.06 x 0.87" / 77.8 x 22.0 mm (including pins)
Weight
0.5 oz / 14.2 g
Packaging Info
Package Weight
0.035 lb
Box Dimensions (LxWxH)
3.1 x 1.05 x 1.05"

Telefunken EL84-TK Reviews

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