6sf5 tube data sheet

The reverse of the metal tube envelope carries the raytheon logo. Basically you can use it but do not use it as a template for making copies. The immediate challenge and probably the reason why it hasnt been used extensively in. See the cunningham data sheet for all technical parameters of this tube. The vox sound from an ac15 or ac30 is in large part due to the el84 power tubes shortly after the appearance of the el846bq5 tube, a slightly higher power version called the 7189 and 7189a tube was released and became the standard power tube in scott tube audio amplifiers.

The 6sf5 is a high gain triode designed for rc coupled voltage amplifier use in audio equipment, especially vehicle battery powered sets. The most accurate method to test tubes, the curve plots can actually be compared to the printed examples for each tube type that appear in the manufacturer technical data sheets and books. Bold designators are close or identical, italic designators are different ratings, different pinouts or different filament voltages. Construction refers to both basing size and the envelope hf means heater or filament voltage and current specifications. The el84, or commonly known as 6bq5 in north america, was intended for use as an inexpensive alternative to the larger audio tubes of the time, such as el34, 6l6, and kt66 power tubes. June 20, 1947 tube department data iaoio gotpoiation of. I cant recall what you call the phase inverter type, its neither a.

The 2a3 tube amplifier a tribute to simplicity and warm sound. Vacuum tube 6sf5, triode antique electronic supply. I cant recall what you call the phase inverter type, its neither a longtailed pair nor a williamson circuit. Etc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. Thanks to frank philipse for supplying the above pdf datasheet. Dec 29, 2005 i read online somewhere that a 6v4ez80 can be used in place of a 6ca4ez81 tube.

What is a kt type of tube the kt series of tubes was developed by movalve aka genalex in response to mullards development of the pentode. Some years ago my friend paolo brought up this lovely valve which looking at the curves seemed to be a great candidate for a driver which required large voltage swing. The tungsol el846bq5 was a popular oem tube for americanmade el846bq5 guitar amplifiers, such as those built by gibson and harmony. Owners of amps from dynaco, eico, mullard, and fisher, among others, were enjoying great sound from. Date codes for rcamade tubes ludwell sibley there is a sort of fascination with the date codes that are found on tubes. The mic input goes through both 6sf5 stages, the phono is only one. By the late 1950s there was a large selection of stereo hifi audio tube amplifiers available. Mar 17, 2017 this was achieved by changing the thoriated tungsten filament to an oxide coated one. Each tube is numbered from the inside, with a metal tag.

Understandable for commercial manufacturers since contrary to the ecc83 the 6sf5 is not made any more. Be sure to insist on genuine tungsol vacuum tubes the next time you retube youll be getting the absolute best possible tubes for. The 6sf5 is a heatercathode type highmu triode designed for service as a high gain. Double triode, 6h8c datasheet, 6h8c circuit, 6h8c data sheet. Vacuum tube 6sf5, triode heatercathode type highmu triode designed for service as a. The 12sf5 is the same valve but equipped with a 12. Looking at the schematic, it looks like your typical circuit for this type of amp. Being a high mu triode it has a very high amplification factor of 100. Typical operating conditions are shoun in the, 6f5 and 6f5gt. Tube 6sf5 or rohre 6sf5 id3900, triode, vacuum, octal int. Because each tube has different characteristics even in matched pair tubes, one can easily finetune the driving tubes plate voltage and the power tubes grid voltage by changing the cathode resistors value. It has the same mu, and at least given the examples ive seen has a spiralwound heater, which can give it some resistance to hum. This runs the tube at full rated plate voltage, and plots the curves at 10 different grid bias levels.

Pdf 6f5ot00 6f5 tube 6sf5 tube 6f5 6sf5 tube 6f5gt tube 6sf5 6f50. But there are still plenty nos tubes available for small scale manufacturers or diyers. The 2a3 tube amplifier a tribute to simplicity and warm. Tube 6hf5 or rohre 6hf5 id49, beam power tube, dekar12pincompactron usa 1961 and shown.

If your amp has bear trap tube retainers they will have to go because of the size of the tube s base but also the bear trap clamp will ground the metal base to the chassis and cause a malfunction. It was an unknown device to me until was suggested by some friends in the forum. As with most valves the usage is to a limited set of licence conditions. Found this pristine bogen challenger ch18 tube amp. Nos tube specification sheet nos tube specification sheet.

Since you have an octal tube already, you might consider switching to a 6sf5 metal triode. We are recommending the same values as western electric in their 1950 data sheet. 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. Though 40 watt is possible, this is a peak value only, and no normal working point. In a pentode a fifth element, the suppressor grid was added to reduce secondary emissions and ensure maximum electron transfer from the cathode to the plate. Thanks to max, the chance i have it, has increased considerably. The 6e1p 6br5 em80 magic eye and other indicator tubes. As an enthusiast of electronics, here is my repository around valves, hifi amplifiers and everything i found interesting to share related to music reproduction. Hoffman amplifiers tube amp forum, substituting 12ax7 for 6sf5. The classic information, on early rca tubes in particular, is bro. Every effort has been made to insure the accuracy of this reference, however, i assume no liability for the results of using information contained herein. I build it and tested with the 300b, which is great.

A closer look to the datasheet does not reveal anything which would make the tube unusable for audio purposes. This is my humble contribution to that warm and unique sound that the valves provide to our ears. Please see the substitutes at the top of the page for more details. Description the 6sf5 is a high gain triode designed for rc coupled voltage amplifier use in audio equipment, especially vehicle battery powered sets. It is of the tube type, using only 5 tubes total with no more than about 45 watts power consumption from the outlet. Apr 17, 20 the 6sf5 is even less common among tube audio designers today than the 6j5. It uses 3 types of tube 1 5y3 gt vacuum rectifier, 2 6sf5 gt highmu triodes, and 2 6k6 power beam amplifiers. Due to many requests by fans of our tungsol line of tubes, the tungsol el846bq5 has been reissued. I used the old 5y3g that was originally in the radio and bought four nos 6sf5 tubes and an old 6v6 metal shell that i had from another project. The 6sf5 is a high gain triode designed for rc coupled voltage amplifier use in audio equipment. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth.

Data presented include those characteristics and ratings essential. Again a surprise since apparently it is a tube very well suited for audio use. Average plate characteristics are made with the sofia digital curve tracer. When you intent to get the maximum out of a 300b, and operate this tube at the limits of safe operation, it is a better idea to use the 300bxls in such a case. Filament voltage and current stayed the same 5v, 0. The thin metal tube envelope is 25 mm in diameter, and excluding the io base pins is 50 mm tall. In most applications the ux112a could simply drop in to a socket meant for the ux201a. I read online somewhere that a 6v4ez80 can be used in place of a 6ca4ez81 tube. Select one of these flags to go to the electron tube data sheets the flags correspond with the location of the mirror site. Tube depot carries a selection of 6sn7 pre amp vacuum tubes. The 6fw5 was designed as horizontal deflection amplifier for tv sets but it can be used for other purposes as well, for example as output tube in an audio amplifier. Both tubes prefigure the general provision of the last series novale indicators of understanding was born in 1955. Due to the small diameter tubes family novale limits has little hypothetical light area, and the presence of the exhaust tube dump the top of the tube. The tungsol name and trademark have been acquired by the new sensor corporation.