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← 12SX7
12SX7 — Candidate to replace following?
Small Signal Triode — Octal
⚠ Safety
Jump to:
Equivalents
Your Tube
Top 10
Targets
Equivalents — Same Tube, Different Names
✓
12SX7GT
✓
12SN7GT
✓
12SN7GTA
✓
1633
✓
CV3697
✓
6SN7GT
✓
6SN7GTA
✓
6SN7GTB
✓
6SN7W
✓
VT-231
Top 10 Picks
B36
drop-in
12.6V
✓ Close
12SN7WGT
drop-in
12.6V
⚠ Close, low Pa
Your Tube
Base:
Octal
Heater:
12.6V / 0.3A
Type:
small signal triode
mu:
20
gm:
2.6
mA/V
ra:
7,700
Ω
Ia:
9
mA
Pa:
2.75
W
Cgp:
3.6
pF
Pinout (Octal)
g1_2
a2
k2
g1_1
a1
k1
Candidates to replace (11)
Heater:
6.3V
4
12.6V
1
●
25V
0
show all (3)
Fit:
Drop-in
1
Adapter
0
Status:
✓ Close
1
✓ Safe
4
⚠ Close, low Pa
3
⚠ Low Pa
3
1 shown (target 12.6V only)
▣ Compact
⚙ Thresholds filter
12.6V Heater
(1 candidates)
Tube
Status ↑
Pa
Ah
Fit
B36
✓ Close
2.5
W
-9%
0.3
drop-in
Generated 2026-04-09
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selected
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