Jj 5881 plate voltage. So that’s quite a big difference. . Now t...
Jj 5881 plate voltage. So that’s quite a big difference. . Now the important differences between the 6L6GC tube and the 5881 tube is plate voltages and power dissipation. It is very similar to the 6L6 sound but with less power. (I didn't take into account of the resistance of the primary windings when planning out in the first place. The 6L6GC tube is a 30W valve. The Tungsol 5881 is a 23 watt tube and is rated for a maximum plate voltage of 400Vdc. Heater. Data Sheets If you need some data sheets of popular 6L6GC tubes by brand, we have included a couple for you below. 38mA for KT66 matches my calculations at 460V and 70% (assuming 25W power dissipation). The 5881 should break up earlier. JJ 6L6GC Datasheet. Screen Grid. 5v higher than the plate voltage. Control Grid. OHMS PERCENT WATTS VOLTS AMP . txt) or view presentation slides online. The 5881 is limited in terms of plate voltage, making it less capable of handling the same high voltages as some 6L6 variants. 1 mA/V (transconductance = Gm = 6100 micromhos if you prefer). pdf), Text File (. Th isisnotparticularlygoodforthe tube,butsomeofthemorerobustandconservativel yratedtubescouldhandleit. Another physical difference is the shorter bulb. These tubes have a soft and balanced response that sounds great in both guitar amps and hifi equipment. Aug 11, 2023 · Even though I'm using a 1K screen grid stopper resistor, screen voltage measures 361v, which is 4. You may like that. 3 V 5881_jj_data_sheet - Free download as PDF File (. It can be used in any 6L6 amplifier. F. 0 mm Filament Current (If) 0. CONTINUED PRECEDING PAGE PUSH-PULL - TR I ODE GRID 12 CONNECTED TO PLATE VALUES ARE FOR VOLTAGE CONNECT I ON 5881 VOL TS AMP VOLTS VOLTS VOLTS MA. The JJ Electronic 5881 is very similar to the 6L6GC but with a plate dissipation of 23W rather than 30W. Oct 10, 2018 · The plate voltage of the JVMs are about 480 volts. How did you calculate 29mA for 6L6 and 5881? My TS 5881s are rated 23W, which at 460V and 70% should give 35mA. It lists typical operating values for single-ended and push-pull class A1 operation including voltages, currents, plate resistance and power ratings. his voltage is far too high? how did you arrive to this conclusion? what about fender? which tubes are used in bassman 5F6A, and what is the voltage on g2 ? May 4, 2010 · The 250 V mentioned isn't a rating but a test voltage: apply 250 V to the plate of a 5881, - 14 V to the grid and you should get a plate current of 75 mA and a slope of 6. Many new production are re-labeled 6L6GC, which max out @ 500V. Either way you're over voltage, but probably OK. The max plate voltage of the JJ 5881 is 450 volts, and the max rating of true 5881 tubes, such as the TS reissue, is only 400 volts. Sometimesanampwillhaveaplatevoltagethatis higher,ormuchhigher,thanthetube's maximum rated plate voltage. The many amplifiers that have higher plate voltage but use a tube rectifier can use the Tungsol 5881 power tubes without issue. May 18, 2025 · The Tungsol 5881 is a 23 watt tube and is rated for a maximum plate voltage of 400Vdc. Check Current Prices Are 6L6 and 5881 Tubes the Same? 6L6 and 5881 are similar tubes, but they are not the same because of certain features such as power dissipation, mechanical strength, and plate voltage. The 5881 valve is a 23W valve. TAD 6L6GCM-STR. We have a great article about 5881 vs 6L6 here! Many amps with high plate voltage can easily use Tung-Sol 5881 tubes without any problem. True old fashion 5881 max out @ 400V. The JJ 5881 will work in any amp that uses Oct 16, 2025 · The JJ Electronic 5881 is very similar to the 6L6GC but with a plate dissipation of 23W rather than 30W. BEAM PENTODE 5881 is a beam power pentode with a maximum plate dissipation of 23W in the classical short bulb. Forinstance,themaxplatevoltageofatubecou ldbe 300DCV,whiletheampputs500DCVontheplates. Aug 11, 2023 · Re: 5881 single ended poweramp (powered with 12V SMPS) by bepone » Fri Sep 22, 2023 11:01 am Stevem wrote: ↑ Fri Sep 22, 2023 10:19 am Your screen voltage as you can see is far too high. The tube is aligned to the socket via a guide pin found in the center of the base. They deliver a vintage tone. Limiting maximum voltage and Sep 22, 2025 · The JJ Electronic 5881 is very similar to the 6L6GC but with a plate dissipation of 23W rather than 30W. Plate. A 23 watt tube and rated for a maximum plate voltage of 400Vdc, the 5881 first entered the market in 1954. Otherwise, use EL34, KT88 or 6550; or drop the voltage a bit: power resistor; reverse zener; bucking tranny. MA. Specs: Body Height 82. Dec 17, 2009 · KT66: 38mA 6L6/5881: 29mA You can verify Plate voltage on the 600V DC setting of your multi meter measuring pins 3 and 8 without tubes in the amp. The JJ 5881 will work in any amp that uses 6L6 tubes. This document provides specifications and characteristics for an octal base AF beam pentode vacuum tube. ) The JJ 5881 is a rich sounding valve from JJ Electronic, available here as singles, matched pairs, and matched quads. Cathode. Most techsagreethatyoushouldobservethemaximumpla Comparing 5881 Tubes vs 6L6 Tubes When it comes to 5881 vs 6L6, they are mostly interchangeable, but there are key sonic differences. 5881 A. N/C. So the 6L6GC will give you more power and more clean headroom. 9 A Filament Voltage (Uf) 6. tcanbqipgfwhipwdvtcetutrlxcxhoylnurmxtjxvakjm