Datasheet: Ftd02p

In a P-Channel MOSFET, the device "turns on" when the Gate voltage is significantly lower than the Source voltage ( VGScap V sub cap G cap S end-sub becomes negative). Common Applications

Ideal for high-frequency PWM (Pulse Width Modulation) applications. Ftd02p Datasheet

: Optimized for high-speed switching and low "on-resistance" ( In a P-Channel MOSFET, the device "turns on"

: Failure of these transistors often occurs alongside damage to the driver IC (e.g., E09A7218A ). If you replace the transistors and the printer still won't turn on or makes a "whistling" sound, the IC is likely shorted. Resistor Verification : Inspect the In a P-Channel MOSFET

Having the correct reference material saves hours in the debugging phase.