“ñŒ…ƒiƒ“ƒo[ŠÇ–¼ŠÓ
Tetrodes, Pentodes

Vf If Type Vp Vg2 Vg1 Ip Is Rp AF TC Bulb Source
14M
Uy-14M F 1.1 0.06 5S 45 45 -3 0.35
500000 65 132.5 54*17.5 T1940(Ueno)
14M F 1.1 0.06 5S 45 45 -3 0.35 0.1 500000 65 130 ’´¬Œ^ŠÇ Itsumi1947
Uy-14M F 1.1 0.06 5S 45 45 -3 0.35 0.1 500000 6.5 130
T1962
22
UX222 F 3.3 0.132 4S 135 45 -1.5


300

T1929.9
UX-222 FD 3.3 0.132 4S 135 45
67.5
-1.5 1.5
3.3
<=Ip/3 850000
600000
300
290
350
480
S-14 RC10
UX-222 F 3.3 0.132 4S 135 45.0
67.5
-1.5 1.7
3.7

725000
325000
270
160
375
500
124*45 T1933.1
RCA-22 FD 3.3 0.132 4S 135 45
67.5
-1.5 1.7
3.7
0.6
1.3
725000
325000
270
160
375
500
ST-14 RCA1937
UX-222 FD 3.3 0.13 4S 135 45 -1.5 1.7
720000 270 370 124*45 T1940(Ueno)
11A
UY-11A F 1.1 0.06 5S 135 67.5 -3 1.8 0.5 700000 300 480 ST T1962
36
RCA-236 HD 6.3 0.3 4S 90
135
180
55
67.5
90
-1.5
-1.5
-3
1.8
3.0
3.1
<=Ip/3 250000
300000
350000
215
315
370
850
1050
1050
S-12 RC10
UY-236 H 6.3 0.30 4S 90
135
135
180
55.0
67.5
75.0
90.0
-1.5
-1.5
-1.5
-3.0
1.8
3.0
3.5
3.1

250000
300000
250000
350000
215
315
275
370
850
1050
1100
1050
112*38 T1933.1
36 H 6.3 0.3 4S 90
135
180
250
55
67
90
90
-1.5
-1.5
-3.0
-3
1.8
2.8
3.3
3.4
<=Ip/3 250000
300000
350000
400000
215
315
370
440
850
1050
1050
1100
ST12C PHILCO
36 H 6.3 0.3 4S 250 20
45
-6 Det. Plate current to be adjusted to 0.1 Ma.with no input signal ST12C PHILCO
RCA-36 H 6.3 0.3 4S 100
135
180
250
55
67.5
90
90
-1.5
-1.5
-3
-3
1.8
2.8
3.1
3.2
-
-
-
1.7
550000
475000
500000
550000
470
475
525
595
850
1000
1050
1080
ST-12 RCA1937
UY-36 H 6.3 0.3 4S 250 90 -3 3.3
400000 440 1100 115*38 T1940(Ueno)
36 H 6.3 0.3 4S 100
250
55
90
-5.0
-8.0
—z‹ÉŒŸ”gF–³M†Žž—z‹É“d—¬ƒ’0.1mAƒj’²® Itsumi1947
36 H 6.3 0.3 4S 100
180
250
55
90
90
-1.5
-3.0
-3.0
1.8
3.1
3.2
-
-
1.7
550000
500000
550000
470
525
595
850
1050
1080

Itsumi1947
UY-36 H 6.3 0.3 4S 100
250
55
90
-1.5
-3.0
1.8
3.2

550000 470
595
850
1080
ST T1962
UY-36A H 6.3 0.3 4S 250 90 -3 3.2
330000 330 1100 ST T1962
64
64
64A
Replace with 36 - When heaters are connected in parallel. ALLIED1952
64 H 6.3 0.4 4S 180 90 -3 3.1




NJ7P
15
RCA-15 HD 2.0 0.22 5S 67.5
135
67.5 -1.5 1.85 0.3 630000
800000
450
600
710
750
ST-12 RCA1937
24
UY-224 H 2.5 1.75 4S 180







T1930.4
UY224 H 2.5 1.75 4S 180 75
90
-1.5
-3.0



400

T1930.11
UY-224-A H 2.5 1.75 4S 180
250
90 -3 4.0 <=Ip/3 400000
600000
400
615
1000
1025
S-14 RC10
UY-224 H 2.5 1.75 4S 250 20-45 -5 0.1 ŒŸ”g 124*45 T1933.1
UY-224 H 2.5 1.75 4S 180
180
250
75
90
90
-1.5
-3.0
-3.0
4.0
400000
400000
600000
420
400
615
1050
1000
1025
124*45 T1933.1
RCA-24-A H 2.5 1.75 4S 180
250
90 -3 4.0 1.7 400000
600000
400
630
1000
1050
ST-14 RCA1937
UY-24B H 2.5 1.75 4S 180
250
90 -3 4 1.7 400000
600000
400
630
1000
1050
115*38 T1937.3
UY-24B H 2.5 1.75 4S 180
250
250
20-45
20-45
30
-
-5
-2.5
-
-
0.5
ƒOƒŠƒbƒhŒŸ”g
ƒvƒŒ[ƒgŒŸ”g
’ïR‘•
Rl=250000 115*38 T1937.3
UY-24B H 2.5 1.75 4S 180
250
20-45 -
-3

ƒOƒŠƒbƒhŒŸ”g
ƒvƒŒ[ƒgŒŸ”g
Rl=250000 115*38 T1940(Ueno)
UY-24B H 2.5 1.75 4S 180
250
250
90 -3 4
4
3.3

400000
600000
600000
400
630
630
1000
1050
1050
115*38 T1940(Ueno)
UY-24B H 2.5 1.75 4S 180
250
90 -3 4.0
4.2
1.0 400000
600000
400
630
1000
1050
ST T1962
24B H 2.5 1.75 4S 250 90 -3 4.2 1.0

1050 ST M1962
24S H 2.5 1.75 5S 250 100 -3 2.1 0.5

1200 ST M1962
14
14 H 14.0 0.5 4S 250 90 -3 4.0




NJ7P
14 H 14.0 14V filament version of the type 24A VTI
14 H 14.0 0.3 4S 250 90 -3 4.0 1.5

1050
Yamakawa1995
32
RCA-232 FD 2.0 0.060 4S 135
180
67.5 -3 1.7 0.4 950000
1200000
610
780
640
650
S-14 RC10
UX-232 F 2.0 0.06 4S 135 45 -
-3.0
-
0.2
ŒŸ”g (leak:1-5M)
-
124*45 T1933.1
UX-232 F 2.0 0.06 4S 135
180
67.5 -3.0 1.7
950000
1200000
610
780
640
650
124*45 T1933.1
RCA-32 FD 2.0 0.060 4S 135
180
67.5 -3 1.7 0.4 950000
1200000
610
780
640
650
ST-14 RCA1937
UX-32 F 2.0 0.06 4S 180 67.5 -3 1.75
1200000 775 675 122*45 T1940(Ueno)
UX-32 F 2.0 0.06 4S 90
180
45
67.5
-1.5
-3
0.8
1.7
0.2
0.4
-
1200000
-
780
-
650
ST T1962
57
RCA-57 H 2.5 1.0 5S 250 100 -3 2.0 1.0 >1500000 >1500 1225 ST-12 RC10
UZ-57
2.5 1.0 5S 250 100 -3 2
1500000 1500 1225 120*38 T1933.1
UZ-57
2.5 1.0 5S 250 100 -3

1300000 1600 1225
T1934.6
UZ-57 H 2.5 1.0 5S 250
250
50
100
-1.95
-3.86
ƒvƒŒ[ƒgŒŸ”g Rl=250000,Rk=8000
Rl=250000,Rk=4000
120*38 T1940(Ueno)
UZ-57 H 2.5 1.0 5S 100
250
250
100 -3 2.0
2.0
2.1
0.5
0.5
-
1000000
1500000
3000000
1185
1500
700(?)
-
-
1125
120*38 T1940(Ueno)
57
57S
H 2.5 1.0 5S 250 100 -3 2.1 0.5 3000000 37000(?)
3700
1200 125*38 RODIN
57
UY-57S
H 2.5 1.0 5S 100
250
300
100
100
125
-3 2.0 0.5 1000000
3000000
-

1185
1225
-
38-1 T1962
57
57S
H 2.5 1.0 5S 250 100 -3 2.1 0.5

1200 ST M1962
UZ-57A H 2.5 0.8 5S 100
250
300
100
100
125
-3 2.0 0.5 1000000
3000000
-

1185
1225
-
38-1 T1962
57A H 2.5 0.8 5S 250 100 -3 2.1 0.5

1200 ST M1962
57A
57AS
Replace with 6C6 - When heaters are connected in parallel. ALLIED1952
57AS H 6.3 0.4 =57
Yamakawa1995
77
RCA-77/C-77 H 6.3 0.3 5S 100
250
60
100
-1.5
-3
1.7
2.3
0.4
0.6
650000
1500000
715
1500
1100
1250
ST-12 RC11
UZ-77
6.3 0.3 5S 250 100 -3

1500000 1500 1250
T1934.6
RCA-77 H 6.3 0.3 5S 100
250
60
100
-1.5
-3
1.7
2.3
0.4
0.5
650000
1500000
715
1500
1100
1250
ST-12 RCA1937
UZ-77 H 6.3 0.3 5S 100
250
60
100
-1.5
-3
1.7
2.3
0.4
0.6
650000
1500000
715
1500
1100
1250
115*38 T1937.3
UZ-77 H 6.3 0.3 5S 100
250
250
36
50
100
-1.95
-1.95
-4.3
ƒvƒŒ[ƒgŒŸ”g Rl=250000,Rk=12500
Rl=250000,Rk=3000
Rl=500000,Rk=10000
115*38 T1937.3
UZ-77 H 6.3 0.3 5S 250 100 -3 2.3
1500000 1850 1250 115*38 T1940(Ueno)
UZ-77 H 6.3 0.3 5S 100
250
60
100
-1.5
-3
1.7
2.3
0.4
0.5
600000
1500000

1100
1250
ST T1962
35/51
RCA-235 H 2.5 1.75 4R 180
250
75
90
-1.5
-3
5.8
6.5
2.5 350000 385
370
1100
1050
S-14 RC10
UY-235 H 2.5 1.75 4R 180
250
75.0
90.0
-1.5
-3.0
5.8
6.5

350000 385
370
1100
1050
124*45 T1933.1
UY-235 H 2.5 1.75 4R 180
250
75
90
-1.5
-3
5.8
6.5
2.8
2.5
350000 385
370
1100
1050
124*45 T1937.3
RCA-35/51 H 2.5 1.75 4R 180
250
90 -3 6.5 2.5 300000
400000
305
420
1020
1050
ST-14 RCA1937
UY-35B H 2.5 1.75 4R 250 90 -3 6.8
400000 440 1100 115*38 T1940(Ueno)
UY-35B H 2.5 1.75 4R 180
250
90 -3 6.3
6.8
2.5
2.5
300000
400000
305
440
1020
1100
ST T1962
34
RCA-234 FD 2.0 0.060 5R 67.5
135
180
67.5 -3 2.7
2.8
2.8
1.1
1.0
1.0
400000
600000
1000000
224
360
620
560
600
620
S-14 RC10
RCA-34 “¯ã ST-14 RCA1937
UX-34 F 2.0 0.06 5R 180 67.5 -3 2.8
1000000 620 620 122*45 T1940(Ueno)
UX-34 F 2.0 0.06 5R 67.5
180
67.5 -3 2.7
2.8
1.1
1.0
400000
1000000
224
620
560
625
ST T1962
39/44
RCA-239 HD 6.3 0.3 5R 90
135
180
90 -3 4.4
4.4
4.5
1.3
1.2
1.2
375000
540000
750000
360
530
750
960
980
1000
S-12 RC10
UY-239 H 6.3 0.30 5 135 90 -3 4.4
540000 530 980 112*38 T1933.1
RCA-39/44 H 6.3 0.3 5R 90
180
250
90 -3 5.6
5.8
5.8
1.6
1.4
1.4
375000
750000
1000000
360
750
1050
960
1000
1050
ST-12 RCA1937
UY-39 H 6.3 0.3 5R 250 90 -3 5.75
1000000 1100 1100 115*38 T1940(Ueno)
39/44 H 6.3 0.3 5R 90
180
250
90 -3min 5.6
5.8
5.8
1.6
1.4
1.4
375000
750000
1000000
360
750
1050
960
1000
1050

Itsumi1947
UY-39 H 6.3 0.3 5R 90
250
90 -3 5.6
5.8
1.6
1.4
375000
1000000
360
1050
960
1050
ST T1962
UY-39A H 6.3 0.3 5R 90
250
90 -3 5.6
5.8
1.6
1.4
375000
1000000
360
1050
960
1050
ST T1962
65
65
65A
Replace with 39/44 - When heaters are connected in parallel. ALLIED1952
65 H 6.3 0.4 5R 180 90 -3 4.5




NJ7P
58
RCA-58 H 2.5 1.0 5R 250 100 -3 8.2 3.0 800000 1280 1600 ST-12 RC10
UZ-58
2.5 1.0 5R 250 100 -3 8.2
800000 1280 1600 120*38 T1933.1
UZ-58
2.5 1.0 5R 250 100 -3

800000 1280 1600
T1934.6
UZ-58 H 2.5 1.0 5R 250 100 -10 ‘æˆêŒŸ”g 120*38 T1940(Ueno)
UZ-58 H 2.5 1.0 5R 100
2?0
250
100 -3 8.0
8.2
8.2
2.2
2.0
-
250000
800000
50000
375
1280
1850
1500
1600
1250
120*38 T1940(Ueno)
58 H 2.5 1.0 5R 250 100 -3 8.2 2.0 800000 12800(?) 1600 125*38 RODIN
58 H 2.5 1.0 5R 100
250
300
100 -3 8.0
8.2
-
2.2
2.0
-
200000
800000
-

1500
1600
-
38-1 T1962
58 H 2.5 1.0 5R 250 100 -3 8.2 2.0

1600 ST M1962
UZ-58A H 2.5 0.8 5R 100
250
300
100 -3 8.0
8.2
-
2.2
2.0
-
200000
800000
-

1500
1600
-
38-1 T1962
58A
58AS
Replace with 6D6 - When heaters are connected in parallel. ALLIED1952
58AS H 6.3 0.4 =58
Yamakawa1995
78
RCA-78/C-78 H 6.3 0.3 5R 90
180
250
250
90
75
100
125
-3 5.4
4.0
7.0
10.5
1.5
1.1
2.0
3.0
315000
1000000
800000
600000
400
1100
1160
990
1275
1100
1450
1650
ST-12 RC11
UZ-78
6.3 0.3 5R 250 100 -3

800000 1160 1450
T1934.6
RCA-78 H 6.3 0.3 5R 90
180
250
250
90
75
100
125
-3 5.4
4.0
7.0
10.5
1.3
1.0
1.7
2.6
315000
1000000
800000
600000
400
1100
1160
990
1275
1100
1450
1650
ST-12 RCA1937
UZ-78 H 6.3 0.3 5R 90
180
250
90
75
125
-3 5.4
4.0
10.5
1.3
1.0
2.6
315000
1000000
600000
400
1100
990
1275
1100
1650
115*38 T1937.3
UZ-78 H 6.3 0.3 5R 250 100 -10 ƒX[ƒp[‘æˆêŒŸ”g 115*38 T1937.3
UZ-78 H 6.3 0.3 5R 250 100 -3 7
800000 1150 1450 115*83 T1940(Ueno)
UZ-78 H 6.3 0.3 5R 90
250
90
100
-3 5.5
7.0
1.5
1.65
300000
800000

1275
1450
ST T1962
54
UX-54
2.5 0.1
6 -4.0 4 0.04
40000 1 25 150*38 T1933.1
UX-54 F 2.5 0.1 SC 8.0 -4.0 4.0

40000 1 25
T1933.5
UX-54 F 2.0 0.2 SC 6.0 -4.0 4.0 0.04
40000 1 25 152*38 T1940(Ueno)
UX-54A F 2.0 0.2 SC 6.0 -4.0 4.0 0.04 min 10-14A 1 25 T T1962
11M
Uy-11M F 1.1 0.06 SC 22.5 -1 22.5 0.6
20200 8.5 420 54*17.5 T1940(Ueno)
11M F 1.1 0.06 SC 22.5 -1 22.5 0.6 0.4 20200 8.5 420 ’´¬Œ^ŠÇ Itsumi1947
Uy-11M F 1.1 0.06 4S 22.5 22.5 -1 0.6
20200 3.5 420
T1962

“ñŒ…ƒiƒ“ƒo[ŠÇ–¼ŠÓ