I bought a bag of 100 BS250 Mosfets. Either they are ALL bad , or I am missing something. My circuit is powered from a 9 volt battery. I want to be able to connect the SOURCE to +9 and with the GATE selectively switched to ground, I expect to get 9 volt ( less the Rdon ) out at the Drain ( with a 300 ohm load). The problem is that all the Bs250s I have, behave like an everyday 2n4403!! A connection from Gate to ground destroys the part. If I insert a series 10k resistor , the device works OK...BUT...The gate draws current , just like a standard junction transistor! I am wanting to use a P channel Mosfet to minimize the battery drain when the circuit is ON. I had hoped to use a resistor in the range of 100k to make life easy on the battery...BUT, a 100k barely makes the BS250 conduct , let alone saturate , as it should! Anyone's comments welcomed.