The 6J5P (6Ж5П) high-transconductance pentode has been designed for h.f. voltage amplification in electronic devices.
The 6J5P pentodes are miniature devices enclosed in glass bulb and are provided with a seven-pin base, rigit leads and an indirectly heated oxide-coated cathode.
The 6J5P pentodes are resistant to ambient temperature from -45 to +70°C and relative humidity of 95 to 98% at +25°C, as well as to vibration with an acceleration of (from 1 to 60Hz) 2 g.
Near equivalent: 6AH6, 6F36 and 6485.

General characteristics:
Name: 6J5P
Type: pentode
Application: HF voltage amplification
Cathode type: oxyde, indirect heating
Envelope: glass, miniature
Mass, g: 12
Filament voltage, V: 6,3
Filament current, A: 0,425-0,475
Anode voltage, V: 300
Anode current, A: 0,005-0,14
Anode power, W: 3,6
Grid1 voltage, V: minus2
Grid2 voltage, V: 150
Steepness, mA/V: 8,0-11,0
Reverse grid current, uA: 0,3
Microphonic noise, mV: 150
Socket type: rsh4 .

High Polymer Compound Carbon (HPCC) coating is for the first time used on vacuum tube production.

Compared to traditional carbon spray technology, HPCC coating will allow greater concentration of electrons,
enhance and maintain stability of the electron flow, maximize « secondary electron emission surpression » from the glass enclosure,
in turn reduce effects of electron swirl which generates internal noises from the vacuum tube itself.

All Psvane tubes get retested at TAD to ensure the perfect quality even after the long trip from factory to us.

the NEW Psvane MKII T-Series:
Carbon coating inside the glass envelope for better heat dissipation and stability of electron tube performance.

Teflon Base with Oxidized Aluminum Collar:
The MKII series tubes use exquisite Teflon material for the base to improve on low conductivity and stability. The amber color oxidized aluminum collar around the Teflon base is will avoid corrosion as well as finger prints to maintain a prestige appearance.

Psvane logo and serial number
The Psvane logo and serial number are engraved on the base: The Psvane MKII series have its logo and serial number engraved in the tube base facing all in same direction. No print on the glass does disturb the appearance of the beautiful shaped glass envelope.

Glass Quality:
A higher quality glass is used for the MKII series to increase the reliability and stability which does slightly increase the total weight of each tube.

Sound Quality:
The MKII series offers superb sound quality. The new coating materials offer an even better music presentation. Even compared to the great sounding Mark I T-Series you will experience slight 3D imaging improvement, layering and clarity

All Psvane tubes get retested to ensure the perfect quality even after the long trip from factory to us.

the NEW Psvane MKII T-Series:

Carbon coating inside the glass envelope for better heat dissipation and stability of electron tube performance.

Teflon Base with Oxidized Aluminum Collar:
The MKII series tubes use exquisite Teflon material for the base to improve on low conductivity and stability. The amber color oxidized aluminum collar around the Teflon base is will avoid corrosion as well as finger prints to maintain a prestige appearance.

Psvane logo and serial number
The Psvane logo and serial number are engraved on the base: The Psvane MKII series have its logo and serial number engraved in the tube base facing all in same direction. No print on the glass does disturb the appearance of the beautiful shaped glass envelope.

Glass Quality:
A higher quality glass is used for the MKII series to increase the reliability and stability which does slightly increase the total weight of each tube.

Sound Quality:
The MKII series offers superb sound quality. The new coating materials offer an even better music presentation. Even compared to the great sounding Mark I T-Series you will experience slight 3D imaging improvement, layering and clarity

The KT66 tube is referred by audiophile as Super-6L6GC due to its silky sound.
a timeless beauty in perfect build quality for years of your audio performance

maximum dimensions:
seated height: 116,50mm high(without pins)
totla length: 130mm
diamter: 52mm

Heater
Uf………………6.3V
If…………… 1.27A

Operation: Tetrode / Triode
Ua ……………………. 500V / 400V
Ug2………………………. 400V
Anoden-dissipation….25W / 25W
Grid-2 dissipation ……3.5W
Ic ………. ………………. 200mA
Uc-f (max) ………….. 100V

Grid-1 series resistor
with autobias 0,5 MΩ
with fix bias 0,1 MΩ

Static Parameter
-Ug1(ca.)…15V
Gm …………………6.3mA/V
ri ………………… 22.5KΩ
RL ……………….. 2.2KΩ
Pout ………………7.25W
Dtot ……………… 9.0%

Recommend operation
Single-Ended A1, Triode
Ua, g2 ……………… 400V / 250V
-Ug1 …………………. 38V / 19V
Rk(per tube)……… 600Ω / 350Ω
RL ………………….. 4,5kΩ / 2,75kΩ
Ia(0)………………… 63mA / 60mA
Gm ………………….. 5.5mA/V
ri …………………….. 14,5 KΩ
Pout ………………… 5.8W / 2.2W
Dtot ………………….. 7% / 6,0%

Push-Pull-Amplifier Class A1, Triode
Ua, g2 ……………… 400V / 25 V
-Ug1 ………………….. 38V / 20V
Rk(per tube)………. 600Ω / 360Ω
RL ……………………. 4 2kΩ / 5kΩ
Ia(0)………… 2X 62.5mA / 2X 55Ma
U(g1-g1.pk) ………. 80V / 40V
Pout ……………….. 14.5W / 4.5W
Dtot …………………. 3,5% / 4,5%

Push-Pull-Amplifier Class AB1, ultra-linearer
Fixed bias / Autobias
Ua ……………………… 552V / 450V
Ug2 ……………………. 525V / 425V
-Ug1……………………… 67V / 35V
Rk…………………….. 560 Ω
RL(a-a) ………………8 7 kΩ
U(g1-g1.pk) ………. 127V
Ia+g2(0) …………… 2 x 35mA / 2 x 62,5 mA
Ig+Ig2(max.sig)…… 2×80mA / 2×72,5 mA
Pout …………………. 50W / 32W
Dtot ………………….. 3% / 2 %

History of 845 tubes:

845 tubes were first introduced by RCA in early 1930s to compete with then industry leader Western Electric. This is also the first 3-element vacuum tube to delivery 60 watts per channel power when used in push-pull circuit design with a manageable physical size. The RCA845 became a milestone of vacuum tube production.

In 1937, Western Electric responded to competition from RCA845 with their newly designed WE284A – which was considered by users to deliver more lively sound than the RCA845 and with very similar electric specifications. WE284A then became the new benchmark of 845 tubes for the entire industry.
However at that time the electronics industry didn’t have many applications for this type of high output power tubes so demand was very limited. Not many WE284A tubes were produced then and even fewer are still around today.

Owning a pair of original Western Electric 284A is a dream for many HiFi audiophiles who own 845 tubes amps, in order to experience what the past glory of tube production could bring to their music system today. However, the scarcity has driven the price to very high level that many audiophiles cannot afford or obtain.

Creation of Psvane WE845:
The Psvane WE845 is a hybrid creation by combining the characteristics of both RCA845 and WE284A tubes. The first Psvane WE845 prototype was sent to Japan in late 2012 for evaluation and the reviewer commented: ‘It’s an ultimate pleasure to re-live the RCA845 sound from Psvane WE845 and I hope you can improve the sound to the WE284A level.’. Psvane design team took another 8 months to improve on design then we come to have today’s final version of the WE845 Replica.

WE845 direct-heated type thorium tungsten cathode triode, class A1 and AB1

Heater
Uf—————————————10 V
If—————————————-3.25 A

Maximum Rating
Ua————————————–1250 V
Pa—————————————–75 W
Pout(max.sig)————————–150 W
Ia(max)———————————120 mA

Direct Interelectrode Capacitances
input————————————–6 pF
output———————————-4.5 pF
grid to plate————————–14.5 pF

Static parameter
Ua————————————–1250 V
-Ug————————————200 V
Ia—————————————–80 mA
Gm—————————————-3 mA/V
ri—————————————-1.7 KΩ
u——————————————5
RL————————————–3.4 KΩ
Ug(pk)———————————-69 V
Pout————————————-15 W

Recommended Operating Conditions
(reference value class A1 .single tube)：

Ua——-1000 1000 1250 V
-Ug——- 145 155 209 V
RL————6 9 16 KΩ
Ia————90 65 52 mA
Gm———3.1 – – mA/V
Ug(pk)—– — 110 148 V
ri———–1.7 1.9 2.1 KΩ
Pou–t——24 21 24 W

Push-pull.class AB1：
Ua—————— 800 1000 1000 1250 V
-Ug—————– 125 170 175 225 V
RL——————- 4.5 4.6 4.6 6.6 KΩ
Ia———————–80 70 40 40 mA
Ug(pk)——– ——177 240 – – V
Ia（mAx.sig）——170 230 230 240 mA
Pout——————-40 75 75 115 W

Recommended Operating Conditions (reference value)
class B(A-F) for two tubes
typical working condition limited parameter
Ua—————— 1250 1500 1250 V
Ia (mAx.sig per tube)——————- 210 mA
Pa (in) (mAx.sig per tube)————— 315 W
Pa (per t —————————- 125 W
Ug———————————-—16 V
Ug(pk)—————-235 280 V
Ia (0)—————–148 84 mA
Ia（mAx.sig）———-500 600 mA
Pd(mAx.sig)————6 7 W
RL(a—a)—————6.7 8.2 KΩ
Pout(mAx.sig)———–300 370 W
class B(R-F)：
Carrier conditions the biggest modulation coefficient is 1 per tube
typical working condition limited parameter
Ua—————— 1250 1500 1500 V
Ug———————————-—10 V
Ia ——————-135 115 150 mA
Pa (in) ——————————185 W
Pa ———————————125 W
Ug(pk)—————-70 70 V
Ig ——————-15 15 mA
Pd——————-11 7.5 W
Pout——————55 57.5 W

845B is direct-heated type thorium tungsten cathode triode
which can be used as class A1 and AB1 amplification.
Mica free construction type

dimensons (exemplaric): 190.2 mm total length, 180.1 mm length without pins, 58.5 mm diameter glass, 47.0 mm diameter base

Heater
Uf————————————10 V
If———————————-3.25 A

Maximum Rating
Ua———————————-1250 V
Pa————————————75 W
Pout(max.sig)————————150 W
Ia(max)——————————120 mA

Direct Interelectrode Capacitances
Input———————————-6 PF
output——————————-4.5 PF
Grid to plate———————–14.5 PF
Static parameter
Ua———————————-1250 V
—Ug———————————-200 V
Ia————————————80 mA
Gm————————————-3 mA/V
ri———————————–1.7 KΩ
u————————————–5
RL———————————–3.4 KΩ
Ug(pk)——————————–69 V
Pout———————————-15 W

Recommended Operating Conditions（reference value）
class A1 .single tube：
Ua——1000 1000 1250 V
—Ug— 145 155 209 V
RL———–6 9 16 KΩ
Ia————90 65 52 mA
Gm———3.1 — — mA/V
Ug(pk)–— 110 148 V
ri———-1.7 1.9 2.1 KΩ
Pout——-24 21 24 W

Push-pull.class AB1：
Ua——————- 800 1000 1000 1250 V
—Ug—————– 125 170 175 225 V
RL———————- 4.5 4.6 4.6 6.6 KΩ
Ia————————–80 70 40 40 mA
Ug(pk)——————177 240 — — V
Ia（mAx.sig）——-170 230 230 240 mA
Pout———————–40 75 75 115 W