Contents
Are MOSFET symmetrical?
This is why MOSFETs aren’t symmetrical. It may be that some designs otherwise are symmetrical, but to make a MOSFET that behaves reliably like a MOSFET, you have to short one of those N regions to the body.
Should a MOSFET have continuity?
A good MOSFET should have no continuity between terminals. If it has, it is defective indeed.
What does VGS mean in MOSFET?
gate-source threshold voltage
1 Abstract. The MOSFET gate-source threshold voltage (VGS-th) and maximum gate-source voltage (VGS-max) are key parameters that are critical to the reliable operation of MOSFETs.
How does the relationship between VGs and VGS-MOSFET work?
Linear (Vgs > Vt and Vds < Vgs – Vt) — Current flows from drain to source. The amount of current is roughly proportional to both Vgs and Vds. The MOSFET acts like a voltage-controlled resistor. This region is used for switching. Saturation (Vgs > Vt and Vds > Vgs – Vt) — current flows from drain to source.
What is the difference between VGs and VGS ( th )?
The Absolute Maximum Vgs is the maximum voltage you should ever subject the MOSFET to under any conditions (stay well away). Usually the actual breakdown is quite a bit different (borrowing from this datasheet): Vgs (th) is the voltage at which the MOSFET will ‘turn on’ to some degree (usually not very well turned on).
Which is the maximum voltage of the MOSFET?
The Absolute Maximum Vgs is the maximum voltage you should ever subject the MOSFET to under any conditions (stay well away). Usually the actual breakdown is quite a bit different (borrowing from this datasheet):
Saturation (Vgs > Vt and Vds > Vgs – Vt) — current flows from drain to source. The amount of current is proportional to the square of Vgs, and is (almost) independent of Vds. The MOSFET acts like a voltage-controlled current source. This region is used for analog circuits like amplifiers.