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servo drive help (newby) Hi,
can anyone out there help?
i have a Shibaura VMC4 by Toshiba circa 1983 and it has blown Transistors (2SD646A) on the spindle drive. i have looked all over for them or the equivalents.
thanks
If you get stuck you may want to look in the Motorola range of types MJ or MJH there is a source in the UK http://www.dialelec.com/index.html
It seems that they may be high voltage NPN darlingtons TO3?, if you do not need the high voltage look at something lower like MJ11030 etc.
Good luck.
Al
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
2SD is a Japanese transistor. Use to be, you could get them from MCM in Dayton.
He's in the UK.Originally Posted by unterhaus
Al
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
2SD646 NPN switching transistor
VCBO 600v
VEBO 5v
Ic 50A
Pc 400W(Tc=25ﾟC)
Tj 150 degrees centegrade
hFE >150
fab/ft* 5 Mhz
Cob 600pf
Pac. Dim. No 319
http://homepage3.nifty.com/ebina2540...D0601-0700.htm
Couldn't cross it easily, big voltage and amperage.
These show qty 41 in Canada. http://www.doom.com/search.php?q=2sd646a
Al
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Thank you all for your replies, i will try these sites
cheers
brian
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