I realize this is an older post, but it looks very suitable for my application, namely,
driving an H-bridge at 1A from a latching hall sensor. I'd replace the P-Mosfets with
sot 3401 p mosfets, as I already have these, and I only need a control signal for my
h-bridge, and the 2n3904 replaced with a pnp2n3906
as the hall sensor I have (0H41) sinks current.
Does this sound reasonable?

Edit: operation at about 100-500Hz


Mods Note:
Please don't hijack other member's thread.
This thread is split from How to emulate a SPDT Relay.

 

Can you post a diagram showing more or less what you have in mind?

 

Yeah it should work... can’t find an English datasheet but as long as VCC is 4-30V and the current is limited to 50mA it should trigger a relay. A schematic would help for your particular situation. Always check datasheets for the parameters. What I can’t understand is why you need a H bridge... again mostly from lack of information.

https://datasheet.lcsc.com/szlcsc/Nanjing-Ouzhuo-Tech-OH41F_C127579.pdf