> Good to know that it also should work with lower voltages. > I remember using the SiSB46DN too. I switched to a MOSFET with SOIC-8 package > because for me it's easier to solder. But I paid too little attention to the > Vgs(th) value.
In my experience, people tend to pay too much attention to the threshold voltage. They don't turn on all at once, they're analog devices, the threshold voltage is just where they begin to turn on. For that transistor, it's where it can conduct 250µA. To figure out how much gate voltage you need for a given conductance/current, look to the "Transfer Characteristics" or "On Resistance vs Gate Voltage" graphs. Happily, this transistor conducts well with 3.3V on the gate, but still has some resistance (and therefore dissipation). It'll go down to 10 milliohms, but takes 10V on the gate to do so. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/FC8766A7-6A5F-4245-8845-DC618DA64663%40mac.com.
