|PN junction diode
||Point contact diode
|Its junction capacitance is low about 0.008 μF to 20 μF
||The barrier layer capacitance at the point is very low about 0.1 pF to 1 pF.
|Its operating frequency is low about 100 MHz.
||Its operating frequency is very high about 10 GHz.
|It has cut-in voltage 0.2 for Ge and 0.6 V for Si.
||It has comparatively very low cut-in voltage.
|It has high value of reverse breakdown voltage.
||It has low value of reverse breakdown voltage.
|It has low forward resistance.
||It has very low forward resistance.
|It can handle high current.
||It can handle low currents.
|It has higher voltage rating.
||It has lower voltage rating.
|It is suitable for low frequency applications.
||It is suitable for high frequency applications.
|It is used in rectifiers, clippers, clampers, voltage multipliers etc.
||It is used to AM detector, video detector, microwave frequency mixer etc.