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Eimac designs and produces power tubes for broadcast, communications, radar, industrial heating, semiconductor processing, science and medical applications, with customers located in virtually every country in the world.
Eimac, now part of CPI’s Microwave Power Products Division located in Palo Alto, CA, was founded in 1934 as Eitel-McCullough, Inc. The company’s first products were transmitting tubes with the high performance and stable design features that were required by the Ham radio community. Under the leadership of the founders, Bill Eitel and Jack McCullough, the company grew and expanded to meet the needs of the U.S. military during World War II. Eimac continued to advance the technology and developed modern, high-power ceramic tubes which incorporate innovative Pyrolytic graphite grids for short-wave and UHF television broadcast. Regarded as a technical innovator, Eimac has become the worldwide leader in broadcast tubes.
All Eimac tubes are made in the U.S. and are proudly distributed through their only authorized distributor, Richardson Electronics.
Tetrodes
Triodes
See the full line of Eimac products
| Quick List of popular Eimac products: |
| PART NUMBER |
DESCRIPTION |
| 8941 |
PLANAR TRIODE |
| 8959 |
WATER COOLED TETRODE |
| 290/Y573 |
PENTODE |
| 3CPX10000U7 |
AIR COOLED TRIODE |
| 3CPX1500A7 |
AIR COOLED TRIODE |
| 3CPX3500U7 |
AIR COOLED TRIODE |
| 3CPX5000A7 |
AIR COOLED TRIODE |
| 3CPX5000U7 |
AIR COOLED TRIODE |
| 3CPX800A7 |
AIR COOLED TRIODE |
| 3CW10000H3 |
WATER COOLED TRIODE |
| 3CW1750A7 |
WATER COOLED TRIODE |
| 3CW20000A3 |
WATER COOLED TRIODE |
| 3CW20000A7 |
WATER COOLED TRIODE |
| 3CW20000H3 |
WATER COOLED TRIODE |
| 3CW20000H7 |
WATER COOLED TRIODE |
| 3CW2000A7 |
WATER COOLED TRIODE |
| 3CW2500C7/YU157 |
WATER COOLED TRIODE |
| 3CW2500D3 |
WATER COOLED TRIODE |
| 3CW30000A7 |
WATER COOLED TRIODE |
| 3CW30000H3 |
WATER COOLED TRIODE |
| 3CW30000H7 |
WATER COOLED TRIODE |
| 3CW40000A5 |
WATER COOLED TRIODE |
| 3CW40000A7 |
WATER COOLED TRIODE |
| 3CW40000H3 |
WATER COOLED TRIODE |
| 3CW45000H3 |
WATER COOLED TRIODE |
| 3CW5000A3/8242 |
WATER COOLED TRIODE |
| 3CW5000A7 |
WATER COOLED TRIODE |
| 3CW5000F3/8243 |
WATER COOLED TRIODE |
| 3CW5000H7 |
WATER COOLED TRIODE |
| 3CW7000A7/YC237 |
WATER COOLED TRIODE |
| 3CW7000H3/Y842A |
WATER COOLED TRIODE |
| 3CW7000H7/YU106 |
WATER COOLED TRIODE |
| 3CX10000A1/8158 |
AIR COOLED TRIODE |
| 3CX10000A3/8159 |
AIR COOLED TRIODE |
| 3CX10000A7 |
AIR COOLED TRIODE |
| 3CX10000H3 |
AIR COOLED TRIODE |
| 3CX10000U7 |
AIR COOLED TRIODE |
| 3CX1000A3 |
AIR COOLED TRIODE |
| 3CX1000A7/8283 |
AIR COOLED TRIODE |
| 3CX1200A7 |
AIR COOLED TRIODE |
| 3CX1200D7/YU121 |
AIR COOLED TRIODE |
| 3CX1200Z7/YU181 |
AIR COOLED TRIODE |
| 3CX15000A3 |
AIR COOLED TRIODE |
| 3CX15000A7 |
AIR COOLED TRIODE |
| 3CX15000H3 |
AIR COOLED TRIODE |
| 3CX1500A7/8877 |
AIR COOLED TRIODE |
| 3CX1500D3 |
AIR COOLED TRIODE |
| 3CX1500D7 |
AIR COOLED TRIODE |
| 3CX20000A3 |
AIR COOLED TRIODE |
| 3CX20000A7 |
AIR COOLED TRIODE |
| 3CX20000C7 |
AIR COOLED TRIODE |
| 3CX20000H3 |
AIR COOLED TRIODE |
| 3CX2500A3/8161 |
AIR COOLED TRIODE |
| 3CX2500D3 |
AIR COOLED TRIODE |
| 3CX2500F3/8251 |
AIR COOLED TRIODE |
| 3CX2500H3 |
AIR COOLED TRIODE |
| 3CX3000A1/8238 |
AIR COOLED TRIODE |
| 3CX3000A7 |
AIR COOLED TRIODE |
| 3CX3000F1/8239 |
AIR COOLED TRIODE |
| 3CX3000F7/8162 |
AIR COOLED TRIODE |
| 3CX4500F3/YU108 |
AIR COOLED TRIODE |
| 3CX5000A3 |
AIR COOLED TRIODE |
| 3CX5000A7 |
AIR COOLED TRIODE |
| 3CX5000H3 |
AIR COOLED TRIODE |
| 3CX6000A7/YU148 |
AIR COOLED TRIODE |
| 4CM100000G |
MULTI-PHASE TETRODE |
| 4CM300000GA |
MULTI-PHASE TETRODE |
| 4CM500000G |
MULTI-PHASE TETRODE |
| 4CPL1000A |
BEAM SWITCH TETRODE |
| 4CPL1000B |
BEAM SWITCH TETRODE |
| 4CPL1000C |
BEAM SWITCH TETRODE |
| 4CPW10000R/9016 |
BEAM SWITCH TETRODE |
| 4CPW1000KA/9009 |
BEAM SWITCH TETRODE |
| 4CPW1000KB |
BEAM SWITCH TETRODE |
| 4CPW100KA/Y841 |
BEAM SWITCH TETRODE |
| 4CPW300000A/9008 |
BEAM SWITCH TETRODE |
| 4CV100000C/8351 |
VAPOR COOLED TETRODE |
| 4CV100000E |
VAPOR COOLED TETRODE |
| 4CV250000B |
VAPOR COOLED TETRODE |
| 4CV50000E |
VAPOR COOLED TETRODE |
| 4CV50000J |
VAPOR COOLED TETRODE |
| 4CW100000D |
WATER COOLED TETRODE |
| 4CW100000E |
WATER COOLED TETRODE |
| 4CW10000A/8661 |
WATER COOLED TETRODE |
| 4CW10000B |
WATER COOLED TETRODE |
| 4CW1400KG |
WATER COOLED TETRODE |
| 4CW150000E |
WATER COOLED TETRODE |
| 4CW250000B |
WATER COOLED TETRODE |
| 4CW25000A |
WATER COOLED TETRODE |
| 4CW25000B |
WATER COOLED TETRODE |
| 4CW30000B |
WATER COOLED TETRODE |
| 4CW50000E |
WATER COOLED TETRODE |
| 4CW800B |
WATER COOLED TETRODE |
| 4CW800F |
WATER COOLED TETRODE |
| 4CX10000D/9171 |
AIR COOLED TETRODE |
| 4CX10000J |
AIR COOLED TETRODE |
| 4CX1000A/8168 |
AIR COOLED TETRODE |
| 4CX1000K/8352 |
AIR COOLED TETRODE |
| 4CX12000A/8989 |
AIR COOLED TETRODE |
| 4CX15000A/8281 |
AIR COOLED TETRODE |
| 4CX15000J/8909 |
AIR COOLED TETRODE |
| 4CX15000R |
AIR COOLED TETRODE |
| 4CX1500A |
AIR COOLED TETRODE |
| 4CX1500B/8660 |
AIR COOLED TETRODE |
| 4CX20000A/8990 |
AIR COOLED TETRODE |
| 4CX20000B |
AIR COOLED TETRODE |
| 4CX20000C |
AIR COOLED TETRODE |
| 4CX20000D/9015 |
AIR COOLED TETRODE |
| 4CX20000E |
AIR COOLED TETRODE |
| 4CX250B/7203 |
AIR COOLED TETRODE |
| 4CX250BC/8957 |
AIR COOLED TETRODE |
| 4CX250FG/8621 |
AIR COOLED TETRODE |
| 4CX250K/8245 |
AIR COOLED TETRODE |
| 4CX250R/7680W |
AIR COOLED TETRODE |
| 4CX3000A/8169 |
AIR COOLED TETRODE |
| 4CX300A/8167 |
AIR COOLED TETRODE |
| 4CX300Y/8561 |
AIR COOLED TETRODE |
| 4CX35000C/8349 |
AIR COOLED TETRODE |
| 4CX3500A |
AIR COOLED TETRODE |
| 4CX350A/8321 |
AIR COOLED TETRODE |
| 4CX350AC/8321A |
AIR COOLED TETRODE |
| 4CX350F/8322 |
AIR COOLED TETRODE |
| 4CX350FJ/8904 |
AIR COOLED TETRODE |
| 4CX5000A/8170 |
AIR COOLED TETRODE |
| 4CX5000J/8909 |
AIR COOLED TETRODE |
| 4CX5000R/8170W |
AIR COOLED TETRODE |
| 4CX600JA/8921 |
AIR COOLED TETRODE |
| 4CX600JB |
AIR COOLED TETRODE |
| 4CX7500A |
AIR COOLED TETRODE |
| 4PR60C |
BEAM SWITCH TETRODE |
| 4X150A/7034 |
AIR COOLED TETRODE |
| 5682K |
WATER COOLED TRIODE |
| 5CX1500A |
PENTODE |
| 5CX1500B |
PENTODE |
| 5CX3000A/8966 |
PENTODE |
| 6426K |
WATER COOLED TRIODE |
| 6544/ML6544 |
BEAM SWITCH TRIODE |
| 6696A/ML6696A |
WATER COOLED TRIODE |
| 7003/ML7003 |
BEAM SWITCH TRIODE |
| 7715/ML7715 |
BEAM SWITCH TRIODE |
| 8295A |
PENTODE |
| 8560AS |
AIR COOLED TETRODE |
| 8795/ML8795 |
WATER COOLED TRIODE |
| 8847A |
PLANAR TRIODE |
| 8874/3CX400A7 |
AIR COOLED TRIODE |
| 8930/DX393A |
AIR COOLED TETRODE |
| 8938/3CX1500C7 |
AIR COOLED TRIODE |
| 8973/X2170 |
WATER COOLED TETRODE |
| 8974/X2159 |
WATER COOLED TETRODE |
| 9013/Y676A |
BEAM SWITCH TETRODE |
| 9019/YC130 |
AIR COOLED TETRODE |
| Y546 |
BEAM SWITCH TETRODE |
| Y599A |
PLANAR TRIODE |
| Y646 |
ELECTRON GUN |
| Y646B |
ELECTRON GUN |
| Y646E |
ELECTRON GUN |
| Y647 |
BEAM SWITCH TETRODE |
| Y690 |
PLANAR TRIODE |
| Y796 |
ELECTRON GUN |
| Y809 |
ELECTRON GUN |
| Y810 |
BEAM SWITCH TRIODE |
| Y811 |
BEAM SWITCH TRIODE |
| Y812 |
BEAM SWITCH TRIODE |
| Y824 |
ELECTRON GUN |
| Y845 |
ELECTRON GUN |
| YC156A |
AIR COOLED TRIODE |
| YC225 |
AIR COOLED TRIODE |
| YC226 |
AIR COOLED TRIODE |
| YC236 |
AIR COOLED TRIODE |
| YC252 |
BEAM SWITCH TETRODE |
| YU113 |
BEAM SWITCH TRIODE |
| YU114 |
BEAM SWITCH TRIODE |
| YU136 |
BEAM SWITCH TETRODE |
| YU140 |
BEAM SWITCH TETRODE |
| YU141 |
PLANAR TRIODE |
| YU146 |
BEAM SWITCH TETRODE |
| YU156 |
ELECTRON GUN |
| YU171 |
ELECTRON GUN |
| YU176 |
PLANAR TRIODE |
| YU176A |
PLANAR TRIODE |
| YU180 |
ELECTRON GUN |
| YU184 |
BEAM SWITCH TRIODE |
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