Is the FQP30N06L a logic level mosfet? This is from a post that is about a year old referring to the the FQP30N06L:
Both those MOSFET types require 10V of gate drive, they won’t work properly with 5V - they might turn on a little bit, but they won’t do so reliably.
When looking for MOSFETs for direct drive from logic level (5V) signals, you must get logic-level MOSFETs. The key spec on the datasheet is the value of Vgs at which the Rds(on) is specified. “Rds(on) at Vgs=4.5V” is typically the specification to look for. 4.5V is used to allow for below-spec 5V supplies. If the only Rds(on) values are given for Vgs=10V, or if Vth is specified as “2–4V” then is NOT logic level.
Vth (threshold voltage) confuses a lot of newcomers - its the voltage at which the device switches OFF. For logic level devices it will typically be 0.5 to 1.0V or so.
I bought that mosfet from Sparkfun without looking at the data sheet because they claim that it is logic level.
Here are some screenshots of the data sheet that I don’t understand. http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Components/General/FQP30N06L.pdf
The first screenshot leads me to believe that is is logic level because of the R
DS characteristics, but the second screenshot leads me to believe that it isn’t logic level. Can somebody please enlighten me?