KT90 — Candidate to replace following?

Beam Tetrode — Octal

Equivalents — Same Tube, Different Names

Your Tube

Base: Octal

Heater: 6.3V / 1.6A

Type: beam tetrode

gm:14mA/Vra:11,000ΩIa:145mAPa:50WVs:250VCgp:1.8pF

Pinout (Octal)

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Candidates to replace (19)

Heater:

Fit:

Status:16 shown (target 6.3V only)

6.3V Heater(16 candidates)

Tube	Status ↑	Pa	Ah	Fit
5881	✓ Safe	23W-54%	0.9	drop-in
7581	✓ Safe	30W-40%	0.9	drop-in
350B	✓ Safe	27W-46%	1.6	drop-in
6CD6G	✓ Safe	15W-70%	2.5	drop-in
6F6	✓ Safe	10.5W-79%	0.7	drop-in
6F6S	✓ Safe	11W-78%	0.7	drop-in
6L6GC	✓ Safe	30W-40%	0.9	drop-in
6M6G	✓ Safe	9W-82%	0.9	drop-in
6N3C	✓ Safe	20W-60%	0.9	drop-in
6P6S	✓ Safe	13.2W-74%	0.45	drop-in
6V6	✓ Safe	14W-72%	0.45	drop-in
6W6	✓ Safe	12W-76%	1.2	drop-in
6Y6	✓ Safe	12.5W-75%	1.25	drop-in
EL34	✓ Safe	25W-50%	1.5	drop-in
KT66	✓ Safe	25W-50%	1.3	drop-in
KT77	✓ Safe	25W-50%	1.4	drop-in

target +0 selectedpick 1+ to compareselect 1+ candidate to compare