SPICE subcircuitIRLZ44NPBFirlz44n
IRLZ44N (logic-level N-MOSFET, 55 V 47 A)
Power MOSFET in TO-220 that switches fully at 5 V gate drive (25 mΩ): motors, LED strips, solenoids straight from an Arduino pin. Level-1 model with drain resistance, gate capacitances and body diode. Use a flyback diode on inductive loads.
Key data
- Category
- Semiconductors
- Simulation model
- SPICE subcircuit
- Manufacturer part number
- IRLZ44NPBF
- Reference prefix
- Q
- Pins
- 3
- Land pattern
- TO-220-3_Vertical
Simulation model
The part is a small SPICE netlist (below), solved by the analog engine together with the rest of the circuit. Pin ids are the node names, {braces} are parameters.
SPICE netlist
M1 d G S S NMOS_IRLZ44N
RD D d 19.8m
D1 S D DIRLZ44N.model NMOS_IRLZ44N NMOS(VTO=1.5 KP=60 LAMBDA=0.01 CGS=1550p CGD=150p)
.model DIRLZ44N D(IS=1e-12 N=1 RS=0.02 BV=55 IBV=250u)Pins 3
| Pin | Name | Use |
|---|---|---|
| D | DPassive pin | Drain: to the load (the load goes to the supply) |
| G | GPassive pin | Gate: straight from a 5 V logic pin (100 Ω series, 10–100 kΩ to GND) |
| S | SPassive pin | Source: to GND (low-side switch) |
PCB
Verified land pattern
TO-220-3_Vertical| Package | Land pattern | Status | Source |
|---|---|---|---|
| TO-220 · IRLZ44NPBF | TO-220-3_Vertical | Verified land pattern | KiCad Package_TO_SOT_THT:TO-220-3_Vertical; IRLZ44N datasheet TO-220AB pinout 1 G, 2 D, 3 S |