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Is the 1N4148 a Schottky Diode?
The 1N4148 is a fast small-signal silicon p-n switching diode, not a Schottky diode; its ratings and behavior should not be confused with parts such as the 1N581x family.
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Diodes & Rectifiers
Is the 1N4148 a Schottky Diode?
The 1N4148 is a fast small-signal silicon p-n switching diode, not a Schottky diode; its ratings and behavior should not be confused with parts such…
Diodes & Rectifiers
What Happens When a Diode Shorts in a Bridge Rectifier?
A shorted bridge-rectifier diode creates an abnormal low-impedance current path that can blow a fuse, overheat the transformer, damage other diodes, and stress downstream capacitors.
Power MOSFETs
Are All MOSFETs the Same?
MOSFETs differ in polarity, channel mode, voltage, current, resistance, charge, capacitance, package, thermal behavior, ruggedness, and intended application.
Power MOSFETs
Can You Replace a MOSFET With a BJT?
A BJT can replace a MOSFET only after redesigning the drive, bias, loss, switching, protection, and thermal behavior; it is rarely a drop-in substitution.
Power MOSFETs
How to Check Which Region a MOSFET Is Operating In
Determine a MOSFET's operating region from VGS, VDS, threshold and the model equations, then verify the conclusion with current, temperature, and safe-operating-area limits.
Power MOSFETs
Can a MOSFET Switch AC?
A MOSFET can control AC, but a single device cannot block both polarities when off; back-to-back MOSFETs or a rectified topology are normally required.
Design & Reliability
How to Monitor MOSFET Temperature
Monitor MOSFET temperature with a placed sensor, thermal model, or electrical proxy, then calibrate the measured case or board temperature to junction temperature under real…
Power MOSFETs
Does Current Flow Through the Gate of a MOSFET?
A MOSFET gate draws almost no steady DC current in normal operation, but current flows while charging capacitances and through leakage, clamps, or faults.