常用贴片三极管的代替

9011                        1T

9012                        2T

9013                        J3

9014                        J6

9015                        M6

9016                        Y6

9018                        J8

S8050                       J3Y

S8550                       2TY

8050                        Y1

8550                        Y2

2SA1015                     BA

2SC1815                     HF

2SC945                      CR

BC846A                     1A

BC846B                      1B

BC847A                     1E

BC847B                     1F

BC847C                     1G

BC848A                     1J

BC848B                     1K

BC848C                     1L

BC856                      3D

BC856A                     3A

BC856B                     3B

BC857A                     3E

BC857B                     3F

BC858A                     3J

BC858B                     3K

BC858C                     3L

BC856B                     3B

BC857A                     3E

BC857B                     3F

BC858A                     3J

BC858B                     3K

BC858C                     3L

BC807-16                    5A

BC807-25                    5B

BC807-40                    5C

BC817-16                    6A

BC817-25                    6B

BC817-40                    6C

2SA733                     CS

UN2111                     V1

UN2112                     V2

UN2113                     V3

UN2211                     V4

UN2212                     V5

UN2213                     V6

MMBT3904                  1AM

MMBT3906                  2A

MMBT2222                  1P

MMBT5401                  2L

MMBT5551                  G1

MMBTA42                   1D

MMBTA92                   2D

2SA733                      CS

2SC3356                    R23

2SC3838                    AD

2N7002                     702

 

精密稳压集成电路TL431

 

1脚接基准电压，2脚地，3脚输入（此时1脚达到2.5V，3脚2脚导通）

 

1、3脚接在一起接输入，2脚接地(此时1，3脚稳压2.5V)