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TECHNICAL DATA
Free Datasheet http://www.Datasheet4U.com
TAD –12AX7A/ECC83
High Performance High-Mu Twin Triode
The TAD™ 12AX7A/ECC83 is a miniature, high-mu twin triode with very good gain,
tight deep bass, fat mids and silky and clear top end with overall definition and
brightness. Selected and recommended for guitar amps to improve overall response.
Best for clean tones as well as for those deep-bass required for modern preamps.
recommended for all positions in amps with medium gain level or High-Gain Amps for
V2+ positions. As for V1 in general but especially for higher gain amps or
phono/audio-amps, we recommend the RT010 7025 Highgrade
or our new RT080 7025WA Highgrade.
The TAD 12AX7A-C can replace any 7025, 12AX7WA, 12AX7WB, 12AX7LPS,
12AX7EH, ECC83 or E83CC.
Characteristics of a bogey tube:
Electrical
Heater:
Voltage (AC or DC)
Current
Heating
Cathode-to-heater potential, max.
Direct interelectrode capacitances, max.***
Grid to plate
Grid to cathode
Grid to heater
Plate to cathode
Mechanical
Operating Position
Base
Dimensions:
Height
Seated height
Diameter
Cooling
Approximate net weight
***Without external shielding, nominal values
Series
12.6V +/-1.0
0.15
Parallel
6.3+/-0.5
0.3
Indirect
150 V
1.5 pF
1.7 pF
0.2 pF
0.3 pF
Any
E9-1, Small Button 9 Pin
56 mm
49 mm
22.5 mm
conventional
13 g
AF Power Amplifier
Maximum ratings
DC plate voltage
Positive DC Grid Voltage
Negative DC Grid Voltage
Plate dissipation
Bulb temperature (surface hottest point)
Cathode Current
330 V
0V
-55 V
1.2 W
160°C
8 mA
RT001, 12AX7A
B+ / V
200
250
300
350
400
RA / kΩ
47
47
47
47
47
RK / kΩ
1,50
1,20
1,00
0,82
0,68
VOut / VRMS
14,9
16,7
18,1
18,9
19,9
VOut / VIN
37,3
41,8
45,3
47,3
49,8
THD / % IA / mA
6,3 0,8
4,8 1,1
3 1,5
2,2 1,9
1,7 2,4
200 100 1,80
250 100 1,50
300 100 1,20
350 100 1,00
400 100 0,82
19,1
20,8
22,4
23,6
24,6
47,8 5,3 0,6
52,0 4 0,8
56,0 2,7 1,1
59,0 2,1 1,4
61,5 1,6 1,7
200 220 2,70
250 220 2,20
300 220 1,50
350 220 1,20
400 220 1,00
20,8
22,9
25,0
26,3
27,3
52,0 6 0,4
57,3 4,1 0,5
62,5 3,2 0,7
65,8 2,3 0,9
68,3 1,9 1,0
Test arrangement:
Bottom View
Octal Base Connections
Outline View
Version 1.0 27.01.2012
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