Stalls i transistor pair

It is similar to a thyristor, which not only stays on after you press the button

In electronics, the Sziklai pair (also known as a "complementary feedback pair" (CFP) or "compound transistor") is a configuration of two bipolar transistors, similar to a Darlington pair.In contrast to the Darlington arrangement, the Sziklai pair has one NPN and one PNP transistor, and so it is sometimes also called the "complementary Darlington". Current gain is similar to that of a Darlington pair, which is the product of the gains of the two transistors. The configuration is named for its early popularizer, George C. Sziklai. One advantage over the Darlington pair is that the base turn-on voltage is only about 0.6V or half of the Darlington's 1.2V nominal turn-on voltage. Like the Darlington, it can saturate only to 0.6V, which is a drawback for high-power stages.

Sziklai transistor pair.

So.. Compared to a darlington.. Which is better to use-- in which application.. And why?? I have made these in real-life.. But don't really see the reason for one over the other

The title was autocorrected... Thank u iphone.. From sziklai.. Sorry about that.

For my purposes-- turning on a relay-- I still don't see any advantage or disadvantage to using this over a 2222 npn darlington pair.. Of course--- I'm not doing audio or precision anything.. Just a simple low level signal to trigger a relay-- maybe someone can chime in which this is better that the darlington in child-like noobie terms??