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Vacuum Tube - 6L6, Electro-Harmonix

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Superior power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Excellent tone and performance compared to most other 6L6 or KT66 types.

Modeled after the vintage RCA 6L6GC "blackplate"
Mica spacers with metal springs eliminate tube rattle and microphonics
5881/KT66 equivalent

Matched versions of this tube use Apex Matching

RoHS Compliant

SKU:

T-6L6-EH

Item ID:

004727

Brand:

Electro-Harmonix, Apex Matched

Type:

Power

Part Numbers
Single or Matched	Our Part Number	UPC/EAN
Apex Matched Pair	T-6L6-EH-MP	609722128414
Apex Matched Quad	T-6L6-EH-MQ	609722128421
Single	T-6L6-EH	683274021713

Measurements by Type
Measurements by Item

Product Measurements by Type
Capacitance, Grid to Cathode		10 pF
Capacitance, Grid to Heater		10 pF
Capacitance, Grid to Screen		10 pF
Capacitance, Grid to Suppressor		10 pF
Capacitance, Plate to Cathode		6.4 pF
Capacitance, Plate to Heater		6.4 pF
Capacitance, Plate to Screen		6.4 pF
Capacitance, Plate to Suppressor		6.4 pF
Capacitance, grid to plate		0.6 pF
Cathode Current (I_k)		80 mA
Grid Circuit Resistance (R_g), Fixed Bias		100 kΩ
Grid Circuit Resistance (R_g), Self Bias		0.5 MΩ
Heater Current		0.9 A
Heater Voltage		5.7 V - 6.9 V
Heater to Cathode Voltage		± 200 V
Plate Dissipation (W_a)		30 W
Plate Resistance (R_a)		33 kΩ
Plate Voltage (U_a)		500 V
Screen Dissipation		5 W
Screen Voltage		450 V
Transconductance (S)		5.2 mA/V

Packaging Information
Packaging Dimensions	Apex Matched Pair version	T-6L6-EH-MP	4.75 in. × 3.5 in. × 1.75 in.
	Apex Matched Quad version	T-6L6-EH-MQ	5.3 in. × 4.8 in. × 3.5 in.
	Single version	T-6L6-EH	1.8 in. × 1.8 in. × 4.8 in.
Weight (Packaging)	Apex Matched Pair version	T-6L6-EH-MP	0.3 lbs.
	Apex Matched Quad version	T-6L6-EH-MQ	0.6 lbs.
	Single version	T-6L6-EH	0.15 lbs.

Product Measurements by Item
T-6L6-EH-MP - Apex Matched Pair version	Capacitance, Grid to Cathode	10 pF
	Capacitance, Grid to Heater	10 pF
	Capacitance, Grid to Screen	10 pF
	Capacitance, Grid to Suppressor	10 pF
	Capacitance, Plate to Cathode	6.4 pF
	Capacitance, Plate to Heater	6.4 pF
	Capacitance, Plate to Screen	6.4 pF
	Capacitance, Plate to Suppressor	6.4 pF
	Capacitance, grid to plate	0.6 pF
	Cathode Current (I_k)	80 mA
	Grid Circuit Resistance (R_g), Fixed Bias	100 kΩ
	Grid Circuit Resistance (R_g), Self Bias	0.5 MΩ
	Heater Current	0.9 A
	Heater Voltage	5.7 V - 6.9 V
	Heater to Cathode Voltage	± 200 V
	Plate Dissipation (W_a)	30 W
	Plate Resistance (R_a)	33 kΩ
	Plate Voltage (U_a)	500 V
	Screen Dissipation	5 W
	Screen Voltage	450 V
	Transconductance (S)	5.2 mA/V
T-6L6-EH-MQ - Apex Matched Quad version	Capacitance, Grid to Cathode	10 pF
	Capacitance, Grid to Heater	10 pF
	Capacitance, Grid to Screen	10 pF
	Capacitance, Grid to Suppressor	10 pF
	Capacitance, Plate to Cathode	6.4 pF
	Capacitance, Plate to Heater	6.4 pF
	Capacitance, Plate to Screen	6.4 pF
	Capacitance, Plate to Suppressor	6.4 pF
	Capacitance, grid to plate	0.6 pF
	Cathode Current (I_k)	80 mA
	Grid Circuit Resistance (R_g), Fixed Bias	100 kΩ
	Grid Circuit Resistance (R_g), Self Bias	0.5 MΩ
	Heater Current	0.9 A
	Heater Voltage	5.7 V - 6.9 V
	Heater to Cathode Voltage	± 200 V
	Plate Dissipation (W_a)	30 W
	Plate Resistance (R_a)	33 kΩ
	Plate Voltage (U_a)	500 V
	Screen Dissipation	5 W
	Screen Voltage	450 V
	Transconductance (S)	5.2 mA/V
T-6L6-EH - Single version	Capacitance, Grid to Cathode	10 pF
	Capacitance, Grid to Heater	10 pF
	Capacitance, Grid to Screen	10 pF
	Capacitance, Grid to Suppressor	10 pF
	Capacitance, Plate to Cathode	6.4 pF
	Capacitance, Plate to Heater	6.4 pF
	Capacitance, Plate to Screen	6.4 pF
	Capacitance, Plate to Suppressor	6.4 pF
	Capacitance, grid to plate	0.6 pF
	Cathode Current (I_k)	80 mA
	Grid Circuit Resistance (R_g), Fixed Bias	100 kΩ
	Grid Circuit Resistance (R_g), Self Bias	0.5 MΩ
	Heater Current	0.9 A
	Heater Voltage	5.7 V - 6.9 V
	Heater to Cathode Voltage	± 200 V
	Plate Dissipation (W_a)	30 W
	Plate Resistance (R_a)	33 kΩ
	Plate Voltage (U_a)	500 V
	Screen Dissipation	5 W
	Screen Voltage	450 V
	Transconductance (S)	5.2 mA/V

Specification Sheet	All Models

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Specifications, Files, and Documents

Specification Sheet

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Substitute Products

The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.