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Vacuum Tube - 12AT7 / ECC81, Electro-Harmonix

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SKU:	T-12AT7-EH
Item ID:	004425

Price: $12^.95

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Type

Preamplifier

Superior large plate format Twin Triode, ideal for use in driver and reverb circuits. Offers superior dissipation compared to NOS versions of this tube.

Excellent 12AT7 choice choice for HiFi
Also suitable for guitar amp circuits
ECC81 equivalent

UPC/EAN: 609722128308

RoHS Compliant

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Specifications, Files, and Documents

Specification Sheet

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Product Measurements (click to expand)

Product Measurements
Amplification Factor		50
Capacitance, each triode		1.6 pF
Capacitance, input		2.5 pF
Capacitance, output		0.4 pF
Cathode to Heater Voltage		< 200 V
Grid Circuit Resistance (R_g), Automatic Bias, Each Triode		1.0 MΩ
Grid Circuit Resistance (R_g), Fixed Bias, Each Triode		0.25 MΩ
Grid Reverse Current		0.5 μA
Grid Reverse Current Max		55 mA
Heater Current		330 - 360 mA
Heater Voltage		6 V / 12 V
Plate Current (I_a)		< 18 mA
Plate Dissipation, per triode (W_a)		3.25 W
Plate Voltage (U_a)		< 330 V
Transconductance (S)		4.5 mA/V

Packaging Information
Packaging Dimensions		1 in. × 1 in. × 3 in.
Weight (Packaging)		0.038 lbs.

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Product Reviews

5.00 out of 5 based on 4 reviews

5 out of 5

In V3 of my Tweed Blues Jr. Works great and is not microphonic. Would use again.

Td - March 14th, 2020

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5 out of 5

Great tube. I'm trying it in my Silverface Princeton Reverb for a different sound.

ecruizer - March 12th, 2016

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5 out of 5

Sweet driver for my '75 Princeton Reverb.

Mickey Richard - July 1st, 2015

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5 out of 5

Bought as a spare for my vintage fender amps.

DG - March 21st, 2015

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