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← 7A4
7A4 — Candidate to replace following?
Small Signal Triode — Loctal
⚠ Safety
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Base:
Loctal
Heater:
6.3V / 0.3A
Type:
small signal triode
mu:
20
gm:
2.6
mA/V
ra:
7,700
Ω
Ia:
9
mA
Pa:
2.5
W
Cgp:
4
pF
Pinout (Loctal)
h
a
nc
nc
nc
g1
k
Candidates to replace (1)
Fit:
Drop-in
1
Adapter
0
Status:
✓ Close
1
1 shown
▣ Compact
⚙ Thresholds filter
12.6V Heater
(1 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
14A4
✓ Close
2.5
W
0.15
drop-in
Generated 2026-04-09
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