Jump to content
Electronics-Lab.com Community

Need 2SA514 datasheet


Recommended Posts

Hi guys, i have a cordless drill/driver (make TGF china). it uses a transistor to control the speed of the drill/driver along with the trigger control. th emore u press the trigger the faster the rpm. the transistor is a TO-220 style package with A514 written on it (which i presume is 2SA514 as japanese transistors are usually named). any one having a its datasheet. i need to know how much power the transistor can handle. the power supply of the drill is from a 7.2v NiCd battery (6x1.2V cells each rated at 1200mAh).
thanx ;)

Link to comment
Share on other sites

thanks for the links, but there is still a problem, the FZT951 is an SMD transistor and the 2SA514 is a TO-220 style transistor, i don't think that the FZT951 can handle the current to drive a 7.2V motor in a cordless drill. maybe i'll look for a substitute in the TIP series on pnp transistors. can a MOSFET be used in its place?

Link to comment
Share on other sites

thanks for your idea but i don't think that it is an scr. i can't see a diac or so connected, all i see is a 7.2V battery connected through a trigger button ( which itself regulates the speed of the motor). the transistor is connected to the trigger button and the trigger button assembly also has a polarity reversal switch so that the motor can work as a screw driver also. maybe i'll try out the TIP127 darlington PNP transistor, it can handle curremts upto 5A

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...