Triode data sheets

Here is some data on the power triodes that might be usable by amateurs for radio projects. Devices are listed from 100W to 50kW. Where possible, Eimac data sheets are provided, as Eimac tubes are used by so many hams. However, I don't have data sheets for all tubes. Sometimes a link is provided to a short summary on Eimac's web site. These are not full data sheets. Data sheets from Svetlana and others are often listed too. Currently no data is listed for Burle tubes. This is because there are so many of them. But feel free to look in the Burle directory if you know what you are looking for.

A list of of Eimac Planar triodes can be found on Richard Electronics web site, and a more complete list on the same site too. The table below concentrates mainly on the larger dissipation devices from Eimac. Note, that quick-reference (1-page summaries) of the all Eimac power tubes publicly available can be found at the power grid devices page on Eimac's web site. However, full data sheets are not available there. This site aims to fill that gap.

The site does not have every data sheet. Some are missing. If you have any of wanted list please let me know. You can upload them directly to my web server (this is on another domain, but don't worry about that). For security reasons, to stop hackers and spammers, the files will be unreadable until I have checked them fully.

Manufacturer Model Anode dissipation Cooling Fmax Notes
Eimac 2C39A 100W Forced air 3000MHz 2C39. Popular tube.
Philips 2C39A 100W Forced air 3000MHz 2C39. Popular tube.
General Electric 2C39B 100W Forced air 2500MHz 2C39.
Eimac 3CX100A 100W Forced air 3000MHz 3CX100. Like 2C39A
Machlett Laboratories
(unverified)
2C39WA 100W Forced air 3000MHz 2C39
Eimac 8755 150W Can be conduction, convection, air or liquid!!! 3000MHz 8755. Needs screw on radiator for forced air cooling to get the full 150W dissipation.
Svetlana 572B 160W Radiation & Forced air 30MHz 572. Popular tube.
Eimac 8873 200W Forced air 500MHz Similar to 8874 and 8875. Old (1979) data sheet
Eimac 8875 300W Forced air 500MHz Similar to 8873 and 8874. Old (1979) data sheet.
Svetlana 3CX300A1 Forced air 300W
convection 30W
Forced air or convection Audio 3CX300.
Eimac 3CX400A7 / 8874 400W Forced air 500MHz 3CX400A7
No newish data sheet. Only old 8874.
Eimac 8874 400W Forced air 500MHz Similar to 8873 and 8875. Old data sheet, no mention of 3CX400A7
Svetlana 3CX400A7 / 8874 400W Forced air 500MHz 3CX400.
Eimac 3CX400U7 (8961)
photo #1
photo #2
400W Forced air 1000MHz 3CX400.
Eimac 3-400Z / 8163 400W Forced air 110MHz 3-400. Glass envelope
Eimac Y820 / X2172F 400W Conduction in oil with heatsink --- Designed as a swtich, so unlikly to work as a linear amplifier.
Philips TB4/1250 450W radiation, possibly air too. 100MHz
Eimac 3-500Z (1980 copy)
3-500Z (1968 copy)
500W Forced air 110MHz 3-500. Glass envelope. There are two data sheets, one 1968, the other 1980. The older spec has a graphite anode.
Eimac 3CPX800A7 800W Forced air 500MHz 3CPX800A7 3CPX800.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
See Svetlana 3CPX800A7
Svetlana 3CPX800A7 800W Forced air 500MHz 3CPX800.
Eimac 3CX800A7

3CX800A7 Preliminary (true spec??)

3CX800A7 1500W FCC ruling (reduced for FCC??)
800W Forced air 350MHz 3CX800. It would appear the preliminary specs (March 1983) were revised 2 months later to keep within the 1500W amateur limit.

There's a Penta 3CX800A7 and a Svetlana 3CX800A7 data sheet too.
Penta 3CX800A7 800W Forced air 350MHz 3CX800. There's an Eimac 3CX800A7 data sheet too. That is probably the more useful than the Penta one for most people.
Svetlana 3CX800A7 800W Forced air 350MHz 3CX800. There's an Eimac 3CX800A7 data sheet as well as a Penta 3CX800A7 too.
Eimac 3CX800U7 800W Forced air 1000MHz 3CX800.
Amperex 3-1000Z / 8164 1000W Radiation &
forced air
110MHz 3-1000. Glass envelope. There's also here data on an Eimac 3-1000Z (8164)
Eimac 3-1000Z / 8164 1000W Radiation &
forced air
110MHz 3-1000. Glass envelope. There's also here data on an Amperex 3-1000Z (8164)
Eimac 3CX1000A3 1000W Forced air 100MHz 3CX1000A3 3CX1000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX1000A7 / 8283 1000W Forced air 220MHz 3CX1000.
Eimac Y-811 Planar triode 1000W Conduction and convection --- Designed as a switch, so unlikly to work as a linear amplifier.
Eimac 3CX1200A7 1200W Forced air 110MHz 3CX1200.
Eimac 3CX1200D7 / YU-121 1200W Forced air 110MHz 3CX1200.
Eimac 3CX1200Z7 YU-181 1200W Forced air 110MHz 3CX1200.
Eimac 3CPX1500A7 1500W Forced air --- 3CPX1500. Designed for pulse use
Eimac 3CX1500A7 8877 1500W Forced air 250MHz 3CX1500. Popular tube.
Eimac 3CX1500D3 1500W Forced air 110MHz 3CX1500. Intended for industrical heating applications.
Eimac 3CX1500C7 / 8938 1500W Forced air 500MHz 3CX1500. This 1972 data sheet is for an Eimac 8938. However, Eimac's quick reference guide shows the 8938 to be known as the 3CX1500C7 too, As always, data on this site is probably not the latest, but I hope it is better than the usual ham tactic of guessing at values.
Eimac 3CX1500D7 1500W Forced air 100MHz 3CX1500.
Eimac 8962 8962 brief (NOT full data sheet) 1500W Forced air 1000MHz 8962 Would seem a nice tube, with big dissipation at 1GHz.
Russian 7213 1500W Forced air 1000MHz  
Eimac Y-831 1500W Forced air 1500MHz Highly linear.
Eimac 3CW2000D3 2000W Water 110MHz 3CW2000D3 3CW2000. A version of the air cooled 3CX1500D3.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW2500C7 YU-157 2500W Water 500MHz 3CW2500C7 / YU-157 3CW2500.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX2500A3 / 8161 2500W Forced air 110 MHz 3CX2500. Yes, 4 kW dissipation despite the part number.
Eimac 3CX2500D3 2500W Forced air 110MHz 3CX2500D3 3CX2500.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX3000F1 8239 3000W Forced air audio 3CX3000
Eimac 3CPX3500U7 3500W Forced air 400 or 500MHz 3CPX3500. Data sheets says frequency of maximum ratings is 400MHz, but brief summary on Eimac site says 500MHz.
Eimac 3CX2500F3 / 8251 4000W Forced air 75MHz 3CX2500. Yes, 4 kW dissipation despite the part number.
Eimac 3CX2500H3 4000W Forced air 75MHz 3CX2500. Yes, 4 kW dissipation despite the part number.
Svetlana 3CX2500H3 4000W Forced air 75MHz 3CX2500
Eimac 3CX3000A1 8238 This data sheet is old (1967) and shows only a 3 kW dissipation 4000W Forced air audio 3CX3000. Brief online data sheet shows anode dissipation as 4 kW max, but data sheet shows 3 kW max
Eimac 3CX3000A7 4000W Forced air 110MHz 3CX3000. 3CX3000A7 is good to 110MHz - the 3CX3000F7 has flexible leads and is only good to 75MHz.
Svetlana 3CX3000A7 4000W Forced air 110MHz 3CX3000. 3CX3000A7 is good to 110MHz - the 3CX3000F7 has flexible leads and is only good to 75MHz.
Eimac 3CX3000F7 / 8162 4000W Forced air 75MHz 3CX3000. 3CX3000F7 has flexile leads, so only good to 75MHz, whereas the 3CX3000A7 is good to 110MHz
Svetlana 3CX3000F7 8162 4000W Forced air 350MHz 3CX3000. There's an Eimac 3CX3000F7 data sheet too.
Eimac 3CX4000F3 / YU-199 4000W Forced Air 110MHz 3CX4000F3 / YU-199 3CX4000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX3000F1 / 8239 4000W Forced Air audio 3CX3000F1 3CX3000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Svetlana 3CX3000F7 / 8162 4000W Forced air 75MHz 3CX3000. 3CX3000F7 has flexile leads, so only good to 75MHz, whereas the 3CX3000A7 is good to 110MHz
Eimac 3CPX5000A7 5000W Forced air 110MHz 3CPX5000. Identical, apart from some tests performed at Eimac, to the YC156
Eimac 3W5000F1 5000W Water audio 3W5000F1
Eimac 3W5000F3 5000W Water 30 MHz 3W5000F3
Eimac 3CW5000A1 / 8240 5000W Water audio 3CW5000A1
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW5000A3 (brief, not full data sheet) 5000W Water 75MHz 3CW5000A3
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW5000A7 5000W Water 110MHz? 3CW5000A7
Eimac 3CW5000F1 (brief, not full data sheet) 5000W Water 75MHz 3CW5000F1
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW5000F3 5000W Water 75MHz 3CW5000F3
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW5000F7 5000W Water 75MHz? 3CW5000F7
Eimac 3CX5000A7 5000W Forced air 110MHz 3CX5000A7 3CX5000. Although the data sheet says class C is okay, Eimac tell me they don't advise it.
Eimac 3CX5000H3 5000W Forced air 90MHz 3CX5000.
Eimac 3CX5000U7 5000W Forced air 500MHz 3CX5000U7 3CX5000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac YC156 5000W Forced air 110MHz Identical, apart from some tests performed at Eimac, to the 3CPX5000A7
Eimac YC-179
picture
5000W Forced air 110MHz Electrically identical to the YC-156 and 3CPX5000A7. However, it is made mechanically a bit different on the grid ring, so will not easily fit where the YC-156 should fit. Clearly done for commerical, not technical reasons.
Eimac 3CX4500F3 / YU-108 6000W Forced air 75MHz 3CX4500F3 3CX4500.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Svetlana 3CX4500F3 / YU-108 6000W Forced air 75MHz 3CX4500.
Eimac 3CX6000A7 / YU-148 6000W Forced air 225MHz 3CX6000.
Svetlana 3CX6000A7 / YU-148 6000W Forced air 225MHz 3CX6000
Svetlana 3CX6000H3 6000W Forced air 90MHz 3CX6000. Does anyknow know if Eimac ever made such a tube?
Eimac 3CW7000F7 / YU-106 7000W Water 75MHz 3CW7000F7 3CW7000.
No data sheet - can you supply one? If so please upload the file(s)
Eimac YC243 6000W Forced air 108MHz Does not need a socket.
Eimac 3CW7000H3 / YU-842A 7000W Water 75MHz 3CW7000H3 3CW7000.
No data sheet - can you supply one? If so please upload the file(s)
Eimac 3CW10,000H3 3CW10000H3 10,000W Water 90MHz 3CW10,000H3 3CW10000 3CW10000H3
Eimac 3CX10,000A1 8158 10,000W Forced air 160MHz 3CX10,000A1 3CX10000A1 3CX10000. Intended for audio amp or voltage regulator, yet frequency of max ratings is 160MHz.
Eimac 3CX10,000A3 / 8159
(tentative)
10,000W Forced air 160MHz
No up to date data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX10,000A7 8160 10,000W Forced air 160MHz 3CX10000A7
Svetlana 3CX10,000A7 8160 10,000W Forced air 160MHz 3CX10,000 3CX10000.
Eimac 3CX10,000B7 10,000W Forced air 110MHz 3CX10000B7 3CX10,000 3CX10000.
Eimac 3CX10,000D3 3CX10000D3 12,000W Forced air 120MHz 3CX10,000D3 3CX10000D3 3CX10000.
No data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX10,000H3 10,000W Forced air 90MHz 3CX10,000H3 3CX10000H3 3CX10000.
Svetlana 3CX10,000H3 3CX10000H3 10,000W Forced air 90MHz 3CX10,000 3CX10000.
Eimac 3CX10,000U7 3CX10000U7 10,000W Forced air 250MHz 3CX10,000U7 3CX10000U7 3CX10000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
The Eimac X2186 data sheet has scribbeled on it 3CX10,000U7
Svetlana 3CX10,000A3 3CX10000A3 8159 12,000W Forced air 140MHz 3CX10,000 3CX10000. Eimac version is rated 10kW, not 12kW
Eimac X2186 / X-2186 10,000W Forced air 250MHz The data sheet has scribbled on it 3CX10000U7, so probably similar/same as 3CX10000U7
Eimac 3CX15,000A3 3CX15000A3 15,000W Forced air 100MHz 3CX15,000A3 3CX15000 3CX15000A3
Svetlana 3CX15,000A3 3CX15000A3 8159 15,000W Forced air 100MHz 3CX15,000A3 3CX15000A3.
Eimac 3CX15,000A7 3CX15000A7 15,000W Forced air 110MHz
Eimac 3CX15,000B7 3CX15000B7 15,000W Forced air 110MHz 3CX15,000 3CX15000. Has the same grid and cathode as the 3CPX5000A7 and the YC156
Eimac 3CX15,000H3 15,000W Forced air 90MHz 3CX15,000H3 3CX15000H3 3CX15000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Svetlana 3CX15,000H3 3CX15000H3 8159 15,000W Forced air 90MHz. 3CX15,000 3CX15000.
Eimac 3CW20,000A3 3CW20000A3 20,000W Water 110MHz 3CW20,000A3 3CW20000A3 3CW20000.
Eimac 3CW20000A7 3CW20,000A7 (brief, not full data sheet) 20,000W Water 110MHz 3CW20,000A7 3CW20000A7 3CW20000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Svetlana 3CW20,000A7 3CW20000A7 20,000W Water 110MHz 3CW20,000 3CW20000A7.
Eimac 3CW20,000H3 20,000W Water 90MHz 3CW20,000H3 3CW20000H3 3CW20000.
Svetlana 3CW20,000H3 3CW30000H3 20,000W Water 90MHz 3CW20,000 3CW20000.
Eimac 3CW20,000H7 3CW20000H7 20,000W Water 110MHz 3CW20,000 3CW20000. The Svetlana 3CW,2000H7 is rated to 200MHz
Svetlana 3CW20,000H7 3CW20000H7 20,000W Water 200MHz 3CW20,000 3CW20000. Eimac 3CW20,000H7 is rated to 110MHz, whereas this one is rated to 200MHz.
Eimac 3CX20000A7 20,000W Forced air 110MHz 3CX20000A7 3CX20000. No data sheet. Do you have one?
Eimac 3CX20,000H3 20,000W Forced air 110MHz 3CX20,000H3 3CX20000
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CV30,000A3 30,000W Vapor 100MHz 3CV30,000A3 3CV30000A3 3CV30000.
Eimac 3CV30,000H3 30,000W Vapor 100MHz 3CV30000H3 3CV30000
Eimac 3CW30000H3 30,000W Water 90MHz 3CW30,000H3 3CW3000H3 3CW30000.
Svetlana 3CW30,000H3 3CW30000H3 30,000W Water 90MHz 3CW30,000 3CW30000.
Eimac 3CW30,000H7 3CW30000H7 30,000W Water 110MHz 3CW30,000H7 3CW30000H7 3CW30000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Eimac 3CX35,000D3 3CX35000D3 ML-6697A 35,000W Forced air 40MHz 3CX35,000D3 3CX35000D3 3CX35000.
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)
Machlett Laboratories ML-6696A 35,000W Water 40MHz (80MHz max) ML-6696A is an water-cooled 60kW version.
Eimac 3CW40,000A3 3CW40000A3 EI3060J 40,000W Water 100MHz 3CW40000 3CW40,000. Direct replacement for Siemens RS3060CJ.
Eimac 3CW40,000A5 3CW40000A5 Y-819 40,000W Water 90MHz 3CW40,000 3CW40000
Eimac 3CW40,000H3 3CW40000H3 40,000W Water 90MHz 3CW40,000 3CW40000
Machlett Laboratories ML-6696A 60,000W Water 40MHz (80MHz max) ML-6697A is an air-cooled 35kW version.
Eimac 3CV200,000D3 / ML-7482 200,000W Vapor 30MHz 3CV200,000D3 3CV200000D3 3CV200000
No FULL Eimac data sheet - can you supply one? If so please upload the file(s)


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