PSB105/14只要用万用表测量一下三个极之间的电阻值就可以。 　　
阳极与阴极之间的正向和反向电阻在几百千欧以上，
阳极和控制极之间的正向和反向电阻在几百千欧以上（它们之间有两个P-N结，而且方向相反，
因此阳极和控制极正反向都不通）。 　　


PSD95/14
PSD95/16
PSD95/18
PSDH75/08
PSDH75/12
PSDH75/14
PSDH75/16
PSDH90/08
PSDH90/12
PSDH90/14
PSDH90/16
PSDT39/08
PSDT39/12
PSDT70/08
PSDT70/12
PSDT70/14
PSDT70/16
PSDT74/08
PSDT74/12
PSDT74/14
PSDT74/16
PSDT75/08
PSDT75/12
PSDT75/14
PSDT75/16
PSDT90/08
PSDT90/12
PSDT90/14
PSDT90/16
PSDT110/08
PSDT110/12
PSDT110/14
PSDT110/16
PSDT175/08
PSDT175/12
PSDT175/14
PSDT175/16
PSDS62/08
PSDS62/12
PSDS62/14
PSDS62/16
PSDS62/18
PSDS63/08
PSDS63/12
PSDS63/14
PSDS63/16
PSDS63/18
PSDS82/08
PSDS82/12
PSDS82/14
PSDS82/16
PSDS82/18
PSDS83/08
PSDS83/12
PSDS83/14
PSDS83/16
PSDS83/18
PSDS112/08
PSDS112/12
PSDS112/14
PSDS112/16
PSDS112/18
PSDS162/08
PSDS162/12
PSDS162/14
PSDS162/16

PSDS162/18
PSDS192/08
PSDS192/12
PSDS192/14
PSDS192/16
PSDS192/18
PSB105/08
PSB105/12
PSB105/14
 

1DI300A-140
1DI300X-120
2DI30D-050A
2DI200M-050
2DI50D-050A
2DI200A-050
2DI75D-050A
2DI300A-050
2DI100D-050
2DI75D-055A
2DI150D-050
2DI240A-055
2DI30M-050
2DI75S-050
2DI50M-050
EVG31-050A
2DI75M-050
EVF31T-050A
2DI100M-050
EVK31-050
2DI100MA-050
EVK71-050
2DI150M-050
EVM31-050A
2DI150MA-050
EVL31-055
2DI150MB-050
EVL32-055
2DI30D-100
2DI75Z-120
2DI30Z-100
2DI75Z-140
2DI75MA-120
2DI50D-100
2DI50Z-100
2DI75D-100
2DI100A-120
2DI75Z-100
2DI100A-140
2DI100M-120
2DI100D-100
2DI100Z-100
2DI150D-100
2DI100Z-120

2DI150Z-100
2DI100Z-140
2DI200D-100
2DI150A-120
2DI150M-120
2DI30A-120
2DI30A-140
2DI30Z-120
2DI150Z-120
2DI75A-140
2DI50A-120
2DI50A-140
2DI50M-120
2DI75M-120
EV1274（2DI20A-1K）
6DI15Z-050
2DI50Z-120
2DI50Z-140
2DI100MA-120
EV1234（1255）
2DI150MA-120
EV1298
6DI10A-050
6DI50MA-050
6DI10MS-050
6DI50A-050
6DI75A-050
6DI75MA-050
6DI15A-050
6DI150A-060

SKT551/14E SKKT15/12 SKKT42B/16E SKKT42B/16E SKKT330/12E SKKH162/16E SKT24/12E SKKT 132/16E SKKT 213/12E

SKKT250/16E SKKT 330/12E SKKT500/12E SKKT106/12E SKKT106/14E SKKT106/16E SKKT132/12E SKKT132/16E SKKT162/16E

SKKT162/18E SKKT72/20EH4 SKKT132/20E SKKT213/12E SKKT213/14E SKKT42/18E SKKT213/16E SKKT253/12E SKKT253/16E SKKT27/12E SKKT27/16E SKKT27/16E SKKT27/16E SKKT330/16E SKKT500/12E SKKT500/16E SKKT57/16E SKKT92/12E SKKT92/16E

SKM100GB101D SKM100GB123D SKM195GB124DN SKM100GB125DN SKM150B128D SKM100GB128DN SKM150B128D SKM145GB123D SKM145GAL123D SKM145GB124D SKM145GB128D SKM145GB128DN SKM150GB128D SKM150GB128DE SKM195GB124D SKM195GAL126D

SKM200GAL126D SKM200GAL173D SKM150GB123D SKM200GB123D SKM200GB128DE SKM200GB126D SKM200GB123D SKM200GB124D SKM200GB128D SKM200GB173D SKM300GA122D SKT551/14E SKM300GAL063D SKM300GAL123D SKM300GAR123D SKM300GB123D SKM300GB174D SKM300GB124D SKM300GB125D SKM300GB128D SKN71/02 SKM300GB128D SKM400GA123D SKM400GA124D SKM400GA128D

SKM400GB124D

SKM400GB125D SKM400GB123D SKM400GB128D SKM40GD123D SHBC64128995 SKM500GA128D SKM50GB123D SKM600GA125D SKM600GA126D