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                                                                                             EMB3 / UMB3N / IMB3A
Transistors


General purpose (dual digital transistors)
EMB3 / UMB3N / IMB3A

  Features                                                                       External dimensions (Unit : mm)
1) Two DTA143T chips in a EMT6 or UMT6 or SMT6                                   EMB3                               1.6
   package.                                                                                                       1.0
                                                                                                                                                0.5

                                                                                                                0.5 0.5
2) Mounting possible with EMT3 or UMT3 or SMT3                                                                  (6) (5) (4)

   automatic mounting machines.




                                                                                                                                   1.2
                                                                                                                                   1.6
3) Transistor elements are independent, eliminating                                        1pin mark      (1) (2) (3)

                                                                                                                0.22                      0.13
   interference.
                                                                                                                     Each lead has same dimensions
                                                                                 ROHM : EMT6                         Abbreviated symbol : B3

  Structure
Dual PNP digital transistor                                                      UMB3N
(each with single built in resistor)                                                                             2.0

                                                                                                                    1.3                               0.9


The following characteristics apply to both DTr1 and DTr2.                                             0.65                 0.65                      0.7
                                                                                                                    (5)
                                                                                                        (6)                 (4)




                                                                                                                                      1.25
                                                                                                                                       2.1
 Equivalent circuit                                                                     1pin mark       (1)
                                                                                                                    (2)
                                                                                                                            (3)




                                                                                                                                                            0.1Min.
                                                                                                                    0.2                          0.15
        EMB3, UMB3N                    IMB3A
           (3) (2)      (1)            (4) (5)     (6)
             R1                          R1
                                                                                 ROHM : UMT6                         Each lead has same dimensions
                       DTr1                        DTr1
                                                                                 EIAJ : SC-88                        Abbreviated symbol : B3
    DTr2                        DTr2

                 R1                          R1
                                                                                 IMB3A
           (4)   (5)    (6)            (3)   (2)    (1)
                                                                                                                2.9
           R1=4.7k                     R1=4.7k                                                                                                    1.1
                                                                                                                1.9
                                                                                                          0.95       0.95                             0.8


                                                                                                          (4)        (5)      (6)
                                                                                                                                    1.6
                                                                                                                                          2.8




 Packaging specifications
                                                                                                          (3)        (2)      (1)
                 Package                                         Taping
                                                                                                                                                              0.3Min.




                                                                                       1pin mark
                 Code                                     T2R     TN      T110                                0.3                                0.15

 Type            Basic ordering unit (pieces)             8000   3000     3000
 EMB3                                                              -       -
                                                                                                                     Each lead has same dimensions
 UMB3N                                                     -               -     ROHM : SMT6
                                                                                 EIAJ : SC-74                        Abbreviated symbol : B3
 IMB3N                                                     -       -




                                                                                                                                                  Rev.B                 1/2
                                                                                                                                                                                       EMB3 / UMB3N / IMB3A
Transistors

                 Absolute maximum ratings (Ta = 25

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