正向特性測試是把萬用表的黑表筆（表內正極）搭觸二極管的正極，紅表筆（表內負極）搭觸二極管的負極。若表針不擺到0值而是停在標度盤的中間，這時的阻值就是二極管的正向電阻，一般正向電阻越小越好。若正向電阻為0值，說明管芯短路損壞，若正向電阻接近無窮大值，說明管芯斷路。短路和斷路的管子都不能使用。
    反向特性測試是把萬用表的紅表筆搭觸二極管的正極，黑表筆搭觸二極管的負極，若表針指在無窮大值或接近無窮大值，二極管就是合格的。

BSM200GA120DN2 BSM300GA120DN2  BSM400GA120DN2 BSM200GA120DLC
BSM300GA120DLC BSM400GA120DLC　 　
BSM50GB60DLC BSM75GB60DLC BSM100GB60DLC 
BSM150GB60DLC BSM200GB60DLC BSM300GB60DLC
BSM25GB120DN2 BSM35GB120DN2 BSM50GB120DN2
BSM75GB120DN2 BSM100GB120DN2K BSM35GB120DLC 
BSM50GB120DLC BSM75GB120DLC  BSM150GB170DLC
BSM100GB120DN2 BSM150GB120DN2 BSM200GB120DN2
BSM300GB120DN2 BSM100GB120DLC BSM150GB120DLC
BSM50GB170DN2 BSM100GB120DLCK 　 　
BSM10GD60DLC BSM15GD60DLC BSM25GD60DLC  BSM30GD60DLC
BSM50GD60DLC BSM75GD60DLC BSM100GD60DLC 
BSM100GD120DN2  BSM100GD120DLC BSM150GD60DLC
BSM200GD60DLC BSM10GD120DN2 BSM15GD120D2 BSM15GD120DN1
BSM15GD120DN2 BSM25GD120DN1
FZ200R12KF2  FZ1200R12KF4 FZ300R12KF2 FZ1200R16KF4
FZ400R12KF2  FZ1200R25KF1 FZ800R12KF4  FZ1200R25KF4
FZ800R16KF4 FZ1200R33KF1 FZ800R33KF1  FZ1600R12KF4
FZ900R16KF1  FZ1800R12KF4 FZ1000R12KF4  FZ1800R16KF4
FZ2400R12KF4 FZ200R33KF2  FZ600R12KF4
FZ400R12KF4  FZ600R16KF4 FZ400R16KF4  FZ800R12KF4
FZ400R33KF1  FZ800R17KF6B2 FZ400R33KF2
FS300R12KF4 300A/1200V/6U FS400R12KF4 400A/1200V/6U
FS300R16KF4 300A/1600V/6U
FF600R12KF4 FF200R33KF2 FF400R16KF4
FF400R12KF4 FF400R33KF1 FF400R33KF2 FF800R12KF4
FF600R16KF4 FF800R17KF6B2

  西門康 SEMIKRON,IGBT 模塊
SKM200GA123D  SKM400GA173D SKM300GA123D SKM300GA173D
SKM400GA123D KM500GA174D SKM500GA123D SKM500GA124D
SKM600GA124D SKM50GB123D  SKM145GAL123D
SKM75GB123D  SKM150GAL123D SKM100GB123D SKM200GAL123D
SKM145GB123D  SKM300GAL123D SKM150GB123D SKM400GAL124D
SKM200GB123D  SKM100GAL173D SKM400GB123D SKM200GAL173D SKM75GB124D SKM200GAL125D
SKM100GB124D SKM400GAL125D SKM145GB124D  SKM300GB124D
SKM150GB124D  SKM400GB124D SKM200GB124D  SKM200GB174D
SKM75GB173D  SKM200GAR173D SKM100GB173D  SKM75GAR123D SKM150GB173D SKM100GAR123D
SKM145GB174DN SKM145GAR123D SKM200GB173D  SKM150GAR123D
SKM50GAL123D  SKM300GAR123D SKM75GAL123D  SKM400GAR124D
SKM100GAL123D  SKM145GAL124D SKM22GD123D  SKM75GD123D
SKM40GD123D SKM100GD123D SKM40GD124D SKM75GD124D

  三菱MITSUBISHI
CT60AM-20  CT75SM-12 CT30SM-12 CT15SM-24
CT35SM-8  CT75AM-12
CM300HA-12H  CM200HA-24HCM400HA-12H  CM300HA-24H
CM600HA-12H  CM400HA-24H
CM600HU-12H  CM600HA-24H CM400HU-24H  CM600HU-24H
CM200HU-24H  CM800HA-24H CM300HU-24H  CM1000HA-24H
CM300HA-12E  CM200HA-24E CM400HA-12E  CM300HA-24E CM600HA-12E 
CM400HA-24E  CM600HU-12E  CM600HA-24ECM400HU-24E  CM600HU-24E
CM200HU-24E  CM800HA-24E CM300HU-24E  CM1000HA-24E
CM400HA-28H  CM800HA-50H CM600HA-28H CM1200HA-50H
CM1000HA-28H  CM800HA-66H CM400HA-34H  CM1200HA-66H
CM800HD-66H  CM800HD-50H CM1200HD-50H 1200A/2500V/1U
CM1200HD-66H 1200A/3300V/1U  CM400DU-12H  CM75DU-12E
CM50DY-12H   CM50E3Y-12E CM75DY-12H   CM75E3Y-12E
CM100DY-12H  CM100E3Y-12E CM150DY-12H  CM150E3Y-12E
CM200DY-12H  CM200E3Y-12E CM300DY-12H  CM300E3Y-12E
CM400DY-12H  CM50E3U-12E CM75DU-12H   CM75E3U-12E
CM100DU-12H  CM100E3U-12ECM150DU-12H  CM150E3U-12E
CM200DU-12H  CM200E3U-12E CM300DU-12H  CM300E3U-12E
CM100DY-12E  CM200DU-12E CM150DY-12E  CM300DU-12E
CM200DY-12E  CM400DU-12E CM300DY-12E  CM400DY-12E
CM50DY-24H CM300DY-28H  CM75DY-24E  CM75DU-24E
CM75DY-24H  CM50E3Y-24E CM100DY-24H  CM75E3Y-24E
CM150DY-24H CM100E3Y-24E CM200DY-24H  CM150E3Y-24E
CM300DY-24H  CM200E3Y-24E CM50DU-24H CM50E3U-24E
CM75DU-24H  CM75E3U-24E CM100DU-24H  CM100E3U-24E
CM150DU-24H  CM150E3U-24E CM200DU-24H  CM200E3U-24E
CM300DU-24H  CM300E3Y-24E CM50DY-24E  CM50DU-24E
CM100DY-24E  CM100DU-24E CM150DY-24E CM150DU-24E
CM200DY-24E CM200DU-24E CM300DY-24E CM300DU-24E
CM50DY-28H CM300E3U-24E CM75DY-28H CM400DY-50H
CM200DY-28H CM400DY-66H CM15TF-12H CM15TF-24H
CM20TF-12H CM20TF-24H CM30TF-12H CM30TF-24H
CM50TF-12H CM50TF-24H CM75TF-12H CM75TF-24H
CM100TF-12H CM100TF-24H CM150TF-12H CM50TF-28H CM75TU-12H CM50TU-24H
CM100TU-12H CM75TU-24H CM150TU-12H CM100TU-24H
CM15TF-12E CM15TF-24E CM20TF-12E CM20TF-24E CM30TF-12E CM30TF-24E
CM50TF-12E CM50TF-24E CM75TF-12E CM75TF-24E
CM100TF-12E CM100TF-24E CM150TF-12E CM50TU-24E CM75TU-12E CM75TU-24E
CM100TU-12E CM100TU-24E CM150TU-12E CM50TF-CM200TU-12H CM75TF-28H
CM100TF-28H