Pretty sure it's less than 200.
The way I remember it, when looking to use flaps in the Tempest, you're almost always already so deep into low speed dodginess that you're best off mechanically bashing the flaps-down button while all your conscious focus is on maneuvering. Bashing that button till they finally come out, and then they're so much more airbrake than useful extra lift that, compared to most other top tier fighters, it's only thanks to the Tempest's massive thrust and their quick deploy/retract speed that you can really benefit from them, or at least from more than the first notch or so.