6C33C-B For Sale
The 6C33C-B is the ultimate power triode. Originally designed as a voltage regulator for the avionics in Russian military aircraft, it is the ideal high current triode for applications such as transformerless (OTL) power amplifiers and power supplies. A few years ago I was offered a deal on a large quantity of them, and I had various projects in mind so I bought them. Since then the projects have faded away but my several hundred 6C33C-Bs most certainly haven't. I'd really like to get back the space in my garage, so I'm offering them at a good price. They are new in the original very substantial Russian packaging, and are dated 1992.
6C33C-B Characteristics
|
Filament Voltage |
6.3V |
|
Filament Current |
6.6A |
|
Maximum Plate Power Dissipation |
90W |
|
Maximum Continuous Plate Current |
560 mA |
|
Mutual Conductance |
40 mA/V |
|
Voltage Gain (µ) |
3.2 |
|
Plate Resistance |
80 Ω |
| Base | Special 7-pin |
| Size | 125mm (5")
high 65mm (2.5") diameter |
Prices
$35 each for 6 or more, including shipping within the US. Outside the US, $28 each plus shipping at cost. For 5 or less, $42 each.
I can also sell you a carton of 50 for $900, including ground shipping within the continental US. At this price they are "as is" - I will not replace any which are broken, out of spec or dead (they're a bargain anyway). Reports suggest you can expect 10-20% to be significantly out of spec.
I'm not a dealer, so I can't offer services like matching or testing. If you get tubes which are non-functional, I will of course replace them (at the $35 price, not in cartons of 50).
Send me an email if you're interested, indicating how many you'd like. Payment by PayPal or check (US or UK) - no credit cards I'm afraid (although you can use PayPal to pay with a card).
Interesting Links - circuits and so on
The Atma-Sphere Novacron OTL amplifier using the 6C33C - sadly no longer in production
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