Home › Forum › Ask A Member › How do Atom Computer Ignition modules work? › Re: How do Atom Computer Ignition modules work?
June 17, 2015 at 7:07 am
#18258
quote mercuryman:
How about this transistor BU931T, Max C to E voltage 400, max current 15 a, DC gain 300.. $2.25 from JAMECO Electronics USA
The spec sheet shows a diode across C to E.
The spec sheet shows a diode across C to E.
Possibly.. though the Hfe might be a little shy. But take a look at the ST901T "High voltage NPN Darlington transistor for ignition coil"
It would seem to be a solid candidate, though it lacks the internal diode.. but we’re already planning to add that, so it’s not of much concern. They’re about $1.70/ea from DigiKey or Mouser.
Chinese eBay sellers are offering them at significantly reduced prices.. 😉