古董半導體功率電晶體 VFET - Vertical Field Effect Transistors link spec link
VFET的電源利用率低(因其DS飽和壓降高達十幾伏,而BJT僅近一伏,達林頓也在二伏內).
縦型ＦＥＴ（SIT / Static Induction Transistor）アンプ link / jp lonk
SONY
2SK60 / 2SJ18 (170V 5A 63W)
- 1G 綜合擴大機: TAN-4650 link, TAN5650, TAN-8650 Wega V-4810‧後級擴大機:TA-5550, TA -8550兩款
- 78年のMJ誌の広告を見ると、当時ペアで3,000～3,300円で販売されています。ちなみに
NECの2SJ20/2SK70は１ペア 3,800～4,000円です。 (pair)
2SK63 (-120v 0.2A .47w) 小信号 無互補Tr
2SK79 (-120v 0.2A .75w) 小信号 無互補Tr
2SK82 / 2SJ28 - TA-N88 (240V 10A 95W)
- 2G 綜合擴大機: TA-F7B , 後級擴大機:TA-N88B link TA-N7B
YAMAHA
2SK75 (200v 0.5A 20w) 無互補Tr
2SK76 / 2SJ26 (200V 10A 100W) - Yamaha B-2 Power amplifier link
2SK76A / 2SJ26A (200v 10A 100w) - Yamaha B-3 Power amplifier
2SK77 (200V 20A 200w) 無互補Tr - Yamaha B-1 Power Am link
2SK78 / 2SJ24 (200v ) 小信号
2SK98 / 2SJ38
NEC
2SK69 / 2SJ19 (140V 0.1A 0.8W) 小信号
2SK70 / 2SK20 (Pd 100W Id 10A , 100V) VICTORのJS-M7やSANSUIのBA-1000への採用例がありますね。
2SK70A / 2SJ20A (Pd 100W Id 10A , 100V) VICTOR機
HITACHI
2SK89 / 2SJ29 (Pd 100W,Id 10A) - 日立Lo-D HA-500F \ 89,800（1975年発売）50W+50W (8ohms) link link link
本機末級管源極電阻0.47歐上壓降135MV,靜態電流近300MA,中點左聲道-20MV,右聲道-17MV,柵極負偏左聲道分別為9.15V -9.06V,右聲道分別為9.03V -9.01V,這已經是非常了不起的了!
TOKIN
2SK180 功率300W，最大電流20A，輸入電容2500p
2SK181
2SK182
2SK182E
2SK183
DENON UHC MOS (Ultra High Current MOS-FET)
made by TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (π−MOSV)
2SK851 200v -30A Vgs +-20V Pd 150w Denon PMA-1500 PMA-2000
2SK2967 250v -30A Vgs +-20V Pd 150w Cg 5400pf Denon PMA-1500AE PMA-2000AE
made by Hitachi PMA-S1,PMA-SA1
2SK1303 100v 30A Pd 100w / 2SJ216 60v 35A pd 50w
2SK2955 60v 45A Pd 100w Ciss 2200pf / 2SJ554 -60v -45A Pd 100w Ciss 2500pf CHINA clone PMA-S1
link
LME49830TB+2SK851制作的后级 http://pub.hifidiy.net/thread-1226148-1-1.html
VFET Amplifier link
* SONY TAN-5550 link
* SONY TAN-8550
* YAMAHA B-1
* YAMAHA B-2 link
Cut from link
Also Hitachi have made Vfets (2sk89-2sj29) if i remember.
However by this first simple mode you can check it.
With a multimeter on diode (for N devices 2sk76-77) put positive terminal on gate and negative on source or drain: you must measure a pn junction
(0,4-0,5V).
Then across Drain to Source you must measure a resistance of about 0,5-1,5 Ohm.
That is similarly to measure a signal jfets.
You must measure the 0,4V pn voltage either among gate to source and among gate to drain.
About 2 ohm Resistance you must measure between D-S in either directions.
If these are in that way, pheraps they are good. (sure they not are mosfet)
To verify these devices in deep you need a circuit with: (Example is for N devices)
1 power supply of about 25-35 Vdc
1 10k Ohm 5-10 W resistor wired from Drain to positive rail
1 1k Ohm 5 W variable resistor wired from source to negative rail.
1 piece of wire from negative rail to gate.
It is better if you put device on a heatsink
Start with variable resistor to max value.
Put a voltmeter at the two ends of 10k resistor.
You would read a voltage drop on resistor.
If no, then you must diminuish slowly the value of variale resistor on the source.
Generally, the N Vfets are going in on state when the Vgs is lower than -15V but is depend on model and rank (-5V at least).
Pass FirstWatt F3 Power JFET Amplifier link
DIY
VFET SRPP pre-amp link
虫屋の雑記帖 [V-FET] link
工芸アンプ SIT VFET link
V-FET（SIT) ２SJ18 CSPP Power Amp Unit link
Evolve Power Amplifiers SIT link
Amplimos V-FET/SIT link
FET amplifier
Sugden A25 Mosfet Integrated Amplifier (1985-1990)
Sugden A25B Mosfet Integrated Amplifier (1990-1995)
SIT 另外一个称呼是VFET。下表是VFET的一些型号，不过大多数都停产多年了。
２ＳＪ２０ ／２ＳＫ７０ （ＮＥＣ）
２ＳＫ７５ （ＹＡＭＡＨＡ）
２ＳＪ２６ ／２ＳＫ７６ （ＹＡＭＡＨＡ）
２ＳＪ２６Ａ／２ＳＫ７６Ａ（ＹＡＭＡＨＡ）
２ＳＫ７７ （ＹＡＭＡＨＡ）
２ＳＪ２４ ／２ＳＫ７８ （ＹＡＭＡＨＡ）
２ＳＫ７９ （ＳＯＮＹ）
２ＳＪ２８ ／２ＳＫ８２ （ＳＯＮＹ）
２ＳＪ２９ ／２ＳＫ８９ （ＨＩＴＡＣＨＩ）
２ＳＪ３８ ／２ＳＫ９８ （ＹＡＭＡＨＡ）
２ＳＫ１８０（ＴＯＫＩＮ）
２ＳＫ１８１（ＴＯＫＩＮ）
２ＳＫ１８２（ＴＯＫＩＮ）
２ＳＫ１８２Ｅ（ＴＯＫＩＮ）
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