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2 parts compared · 19 differing specs across 19 total parameters.

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Specification differences for IRF9540, IRF9540
Parameter
Operating temperature--55°C~175°C(TJ)
Drain To Source Voltage-100 V
Drive Voltage (max Rds On, Min Rds On)-10V
CaseTO-220ABTO-220-3
Package-Tube
Component CategoryP-Channel Power MOSFETs-
Current - Continuous Drain (id) @ 25°C-19A (Tc)
Fet Type-P-Channel
Gate Charge (qg) (max) @ Vgs-61 nC @ 10 V
Input Capacitance (ciss) (max) @ Vds-1400 pF @ 25 V
Market RealityThe P-channel TO-220 row is the high-side switch of practical electronics: loads that must sit above ground and switch on the positive rail, driven straight from logic with a level-shifting transistor and no bootstrap - the circuit simplicity that keeps these parts alive in 12V and 24V designs. The IRF9540 is the classic -100V face of the row (the P-counterpart of the IRF540 lineage) and its on-resistance shows the age; the IRF4905 is the modern brute (-74A at 20 milliohms, but only -55V) and the IRF5210 the middle ground that keeps the 100V rating with triple the original conductance. All three are standard-drive parts, and every substitution in this row is decided by two numbers: rail voltage and the gate drive actually available.-
Mounting-Through Hole
Power Dissipation-150W (Tc)
Rds On (max) @ Id, Vgs-200mOhm @ 11A, 10V
Role In CircuitOriginal Reference Part-
Sourcing StatusActive Shenzhen Spot Sourcing (24–48h)-
Technology-MOSFET (Metal Oxide)
Vgs-±20V
Vgs(th) (max) @ Id-4V @ 250µA

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