Inductor Saturation Current Tester

This is my collected data from Aliexpress inductors I have in my parts bin. The link displays the oscilloscope screen shot for that inductor test.

The worst inductors where the SMD 1210 sized inductors, which probably were not meant for switching power applications. The best inductors were labeled Molded Power Inductors, and the saturation current measurements were really rough, since the current was so high, the voltage drop across the P-Channel FET becomes an issue. These "molded inductors" curves looks a lot like the metal alloy Bourn ones I got from Digikey, so they are probably the best choice for the power applications.

Inductor Name	Picture	Results
CDRH74R 7.3mm x 7.3mm		Value Measured L Sat I 2.2uH 2.5uH 14.25A 10uH 9.5uH 5.2A 47uH 49.8uH 5.2A 100uH 85uH 1.5A
Through Hole 4mm x 6mm		Value Measured L Sat I 47uH 41uH 14.25A
Through Hole 8mm x 10mm		Value Measured L Sat I 330uH 225uH 190mA
Axial Through Hole		Value Measured L Sat I 10uH 7.3uH 2.25A 47uH 46.4uH 944mA 100uH 93,5uH 300mA
SMD 3.5mm x 3.5mm		1mH released the magic smoke. Apparently the maximum current this device can handle is less than the saturation current.
CD43 4mm x 4.3mm		Value Measured L Sat I 1uH 1.1uH 19A 10uH 10uH 3.7A 47uH 49uH 1.27A 100uH 80uH 0.9A 330uH 364uH 380mA
SMD 1210 2.5mm x 3.75mm		Value Measured L Sat I 10uH 3.08uH 2.3A 100uH 37uH 493mA
0402 Molded Power Inductor 4mm x 4.5mm		Value Measured L Sat I 10uH 5.0uH 17.6A
0520 Molded Power Inductor 5.5mm x 5.0mm		Value Measured L Sat I 10uH 7.9uH 11.1A
0650 Molded Power Inductor 6.5mm x 6.5mm		Value Measured L Sat I 4.7uH 3.7uH 25.8A 47uH 33.9uH 6.75A
1040 Molded Power Inductor 10mm x 10.4mm		Value Measured L Sat I 10uH 11.3uH 24.9A 100uH 81.6uH 6.6A