Always check "( V_CEO )" and "( I_C )" first. If the substitute has lower voltage or current than the original, reject it immediately.
Here are some tips for using transistor equivalent PDF resources: all type transistor equivalent pdf
2.3. Small-signal MOSFET model
This is the go-to repository for original datasheets. If you know the specs of a transistor but can't find a match, look up the original part here to compare Voltage (Vce), Current (Ic), and Gain (hFE). Always check "( V_CEO )" and "( I_C )" first
