本帖最后由 wodezpyzz 于 2018-4-28 13:43 编辑
1.我想知道在Ugs满足开启电压后,MOSFET工作在恒流区还是可变电阻区?我知道这和Uds电压大小有关。但就具体应用在开关状态时是处于哪个区呢?
2.下面是一个MOSFET的Maximum Ratings 的参数,其中Id最大200mA那为什么在Id与Vds特性曲线中会有在有的Vgs电压下恒流区的Id大于200mA(大于500mA)?
Maximum Ratings @ TA = 25C unless otherwise specified
Characteristic Symbol BSS138W Units
Drain-Source Voltage VDSS 50 V
Drain-Gate Voltage (Note 1) VDGR 50 V
Gate-Source Voltage Continuous VGSS 20 V
Drain Current (Note 2) Continuous ID 200 mA
Total Power Dissipation (Note 2) Pd 200 mW
Thermal Resistance, Junction to Ambient RJA 625 C/W
Operating and Storage Temperature Range Tj, TSTG -55 to +150 C
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