ETC 12AU7

"Ei-RC" - Electronic tubes factory
Data Sheet
Page 1 of 4
ECC82/12AU7
ECC82 is A.F. Double Triode
Quick reference data
•
•
•
Anode current Ia=10,5mA
Transcoductance S=2,2mA/V
Amplification µ=17
Heating
Heating is indirect by AC od DC, with serial or parallel supply.
Heater voltage
Heater current
pins
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Vf
If
6,3
300
9-(4+5)
12,6
150
4-5
(V)
(mA)
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
eirc@eierc.com
http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 2 of 4
ECC82/12AU7
Dimensions and connections
Base: Noval
Typical characteristics and operating conditions
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Anode voltage
Va
100
250
(V)
Grid voltage
Vg
0
-8,5
(V)
Anode current
Ia
11,8
10,5
(mA)
Transconductance
S
3,1
Amplification
µ
19,5
17
Internal resistance
Ri
6,25
7,7
2,2 (mA/V)
(kΩ)
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
eirc@eierc.com
http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 3 of 4
ECC82/12AU7
Limiting - maximal values (design center rating system)
Vao
550
Va
300
Anode dissipation
Wa
2,75
(W)
Cathode current
Ik
20
(mA)
Grid voltage
Vg
-100
(V)
Grid voltage, peak
Vgp
-250
(V)
Grid resistor
(automatic bias)
Rg
1
(MΩ)
Cathode to heater voltage
Vkf
180
(V)
Cathode to heater circuit
resistance in phase
splitting circuits
Rkf
150
(kΩ)
Anode voltage
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
(V)
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
eirc@eierc.com
http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory
ECC82/12AU7
Data Sheet
Page 4 of 4
Application note:
This tube can be used without precautions against microphony in equipment which is characterized by
Vi ≥ 10mV for an output of 50mW of the output tube (or Vi ≥ 100mV for 5W output), provided that average
acceleration of the tube is not greater than indicated in the Section "Microphonic effect" from the
"Application directions". When the center tap of the heater transformer is grounded, Rg ≤ 0,3MΩ and Rk is
sufficiently decoupled, and the disturbance level from hum and noise will be better than 60dB bellow 100mV.
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
eirc@eierc.com
http://www.eierc.com/rc/default.htm