6ah4 tube data sheet

Bold designators are close or identical, italic designators are different ratings, different pinouts or different filament voltages. It differs from the 6ax4 gta in having a higher peak inverse plate voltage rating. See the cunningham data sheet for all technical parameters of this tube. The 5ar4 and gz34 is an indirectly heated cathode tube which means it takes longer to warm up. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. You not only get crystal clear thoriated sound but this type is selfgettered. My favorite tubes and their substitutes positive feedback. The 6ck4 has an additional grid connection which is brought out to pin 1 and 3 in parallel while the 6ah4 grid is only connected to pin 1. In most applications the ux112a could simply drop in to a socket meant for the ux201a.

Also the pinout of these two tubes is almost the same. This valve was made by mullard for the american distributor iec. Tc tubes and audio repair repair services include tube and solid state gear, turn table setup, and tubetesting in twin cities metro area. We may have more in cases that have not been tested and logged into our inventory yet. This tube may be used with full input up to 60 mhz and with reduced input up to 175 mhz. Looking for the alt q datasheet application at 95h 3.

Free vacuum tube data sheets free vacuum tube substitution. The 1943, 1949 and 1959 sylvania tube manuals online. Although not affecting the valves performance the cossor lettering shows attention to detail and has considerable style. Adjust the vr1 500ohm so that the the tube filament voltage middle pin of u1 is around 6. Each tube is numbered, inside the bulb with a metal tag. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. Matching data, grid current, vacuum, filament current, etc, are on the certificate that comes with each individual tube. The tube data for the 12b4a from duncan amps suggests an operating point of 150v on the plate and 35ma with bias set at 17. Pdf b660, 70degree 6ah4 tube 6ah4 6ah4gt tube 6ah4. If you have never used this facility before, click the help link on the left for detailed instructions. Thus the 6ck4 could be used as a near substitute to the 6ah4 if the circuit can handle the higher heater current of 1. Welcome to the tube data sheet locator, a popular web resource for finding data on vacuum tubes. Russian tube 5c3s is a quality equivalent of the 5u4g.

Shuguang is the oldest and largest tube manufacturer in china, established in 1958 by engineers educated and trained in the united states in the 3040s. I only have a few ruggedised 6x4w tubes made by raytheon. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. Russian tube 5c3s is a quality equivalent of the 5u4g, u52, 5z3, 5as4, 5z10. Nos tubes can still be found and also finding good quality 7 pin sockets is not a problem. Mar 17, 2017 this was achieved by changing the thoriated tungsten filament to an oxide coated one. The thin metal tube envelope is 25 mm in diameter, and excluding the io base pins, is 62 mm tall. The design purpose was as a triode oscillator and pentode mixer within vhf tv tuners. Voice phone 8474964546, mondayfriday 8am to 4pm usa central time. Vacuum tube 6s4a, triode, medium mu antique electronic. If everything is ok, the measured voltage of vcc terminals of r2 or r5 are about 65v dc. Tube 6ah4gt or rohre 6ah4gt id4561, triode, vacuum, octal int.

Such tubes are always high quality tubes, like c3g, c3m, c3o, or their little sister d3a. In the 12dw7ecc832, section 1 of the tube pins 6, 7, and 8 is the high gain 12ax7ecc83 spec gain factor 100 and section 2 pins 1, 2, and 3 is the low gain 12au7ecc82 spec gain factor 17. The thin glass tube envelope is 20 mm in diameter and, excluding the b9a base pins, is 57 mm tall. Quite remarkable is the shock resistance which is stated up to 700g. Since i never used 6x4s for any project, i did not stock up many of them. Plate top tube based audio gear and own sixteen pieces of tube gear between my two reference systems.

There are some very few tubes which have an official datasheet with auto bias specifications only. Vintage european and us 5687, 7044, 7119, and e182cc tubes in stock now, fully tested and guaranteed. Made on the the sofia curve tracer, with courtesy of amr, wisconsin, usa. If you need more than the quantity available, please email us at. The 6ax4 gtb is unilaterally interchangeable with the 6ax4 gt and 6ax4 gta. To search for tube data, simple click the search link on the left. There is a rule of thumb that says you should pick a load impedance that is approximately 2. Each tube is given a 45hour runin under, which maintains rigidity under shock and vibration. I usually tend to use 5u4gbs as the rectifier when needing a high current tube rectifier and account for the larger voltage drop with the correct transformer however the 5ar4gz34 is a good tube as well. The key is the tube s transconductance eg x mav and how this affects current through the resistor. My favorite tubes and their substitutes by robert h. This amplifier was originally featured on the february 2003 issue of the highfidelity audio. There are much easier tubes to use in a2 such as the 3c24. It has a plate dissipation of 10 watts which is good for about 1.

Will the output transformer on this 6ah4 preamp work without any. It has many circuit diagrams, using these tubes and all the information, about these original vacuum tubes. Actually, the 6ah4gt amp is also being built as a first amp ever built, by a montreal musician friend who runs tweeked altec a7s500s. Without a thorough knowledge of tube types and their substitution possibilities, you may be overpaying for your new or. Let me bring to your attention, the c3g at its introduction in 1952 was the fist frame grid tube, and it was not available commercially. The 6146w vacuum tube is a ruggedized military version of the 6146 family of tubes. The tube features high plate current at low, application. The 6ah4gt, when operated from relatively low platesupply voltages, is capable of deflecting fully largedeflectionangle picture tubes. The 6ah4 is only available in the gt form, which stands for glass tube, hence the complete designation of the tube is 6ah4gt. The white cylinder in the centre shows the central oxide coated cathode tube. Filament voltage and current stayed the same 5v, 0. The 10y is a small transmitting tube, it is a special version of the 10 which was introduced in the 1920s as type ux210.

The glass disc base is sealed into several metal rings before the diameter and expansion coefficient matched the outer steel shell. The 10y has a 4 pin ux4 base like most directly heated triodes. The 6am4 uhf triode is designed for grounded grid operation to ensure the maximum isolation between input and output circuits. Full text of heathkit tc 2 tube data internet archive. Every tube we stock is listed here and this page is long, just. All the mentioned technical parameters make this tube perfect for any case where more drive.

Sep 09, 2014 i looked on line at the 4p1l data today, a fresh look, and i agree with you guys, it will be a fine tube for me to use on altec a7s. The tube, arranged as a grounded cathode amplifier, amplifies the inverse of the ripple seen at the grid across the series resistor 270 ohms. Eye, 1 shadow angle, 6pinbase u6a, old, usa and shown. The grid has many connections in order to approximate to a ring. In short, a frame grid means the grid wire is not self supporting, but is wound around a hard metal frame. For other taylor tubes, see the entire 1945 taylor tube catalog in pdf format note, 1. This 1932 rca below manual provides all the data sheet information, of the first radio receiving tubes ever made, from about 1920 to 1932.

The 6ah4 gt, when operated from relatively low platesupply voltages, is capable of deflecting, max i max. Tube 6ah6 or rohre 6ah6 id4562, vacuum pentode, miniatur7pinbase b7g, usa 1940 and rfifstage shown. Voice phone 8474964546, mondayfriday 8am to 4pm usa. I wondered for years how a tube with such awful curves could produce a decent amp. It is a small, sturdy, glassoctal heater cathode type used as an af power amplifier and modulator and as an af power amplifer and oscillator. The 6883b 8032a 8552 vacuum tube is a small, sturdy, glassoctal heater cathode type used as an af power amplifier and modulator and as a rf power amplifer and oscillator. The 2a3s will bias exactly at the original operating point. If the tubes are perfectly matched, the bias voltage across the current sink will be identical but eventual mismatches will be automatically addressed as an equalizing voltage across the grid resistor. This months tube is one of my favorite directly heated triodes, the 10y. Shuguangs vacuum tube production accounts for the worlds 40% total tube output nowadays, either under their own brand shuguang or under oem brands.

Power tube selection charts for highpower audioamplifiers eimac,rcapage 1. In most cases the tubes manufactured to the european system have an exact equivalent tube in the american system and vice versa. It is very similar to the famous 801a which has a higher maximum plate voltage and dissipation. And the fact is, some have used tubes with curves that look worse than the 6ah4, and they seemed to like the results. For those tubes, where it does matter, you better look twice who sells you what, because if it does matter, that is not without a reason. Vacuum tubes, sockets, capacitors, nixie and electron tube accessories. Data pack a issued march 2001 2400143 gas tube specifications data sheet why gas, gastec detector tube system is to help company personnel responsible for health and safety in the workplace, to ensure that the oels.