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                                                                                                                        DTD143TK
Transistors

500mA / 40V Digital transistors
(with built-in resistor)
DTD143TK
  Applications                                                   External dimensions (Unit : mm)
Inverter, Interface, Driver
                                                                                         2.9                     1.1

                                                                                               0.4                0.8


  Features                                                                         (3)

1) Built-in bias resistors enable the configuration of an




                                                                                                       2.8
                                                                                                       1.6
   inverter circuit without connecting external input
   resistors (see equivalent circuit).                                             (2)               (1)




                                                                                                                          0.3Min.
                                                                                   0.95 0.95
2) The bias resistors consist of thin-film resistors with                                                      0.15                 (1) Emitter
                                                                                         1.9                                        (2) Base
   complete isolation to allow negative biasing of the
                                                                                                                                    (3) Collector
   input. They also have the advantage of almost                   ROHM : SMT3                                 Each lead has same dimensions
   completely eliminating parasitic effects.                       EIAJ : SC-59                Abbreviated symbol: F03

3) Only the on / off conditions need to be set for
   operation, making the device design easy.



  Structure                                                      Equivalent circuit
NPN epitaxial planar silicon transistor
(Resistor built-in type)


                                                                                                           C
 Packaging specifications                                           B
               Package               SMT3                                     R1

               Packaging type       Taping                                                                 E

               Code                  T146                         B : Base
               Basic ordering                                     C : Collector
 Part No.      unit (pieces)         3000                         E : Emitter

 DTD143TK                                                        R1=4.7k



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