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                 BLF573S
                 HF / VHF power LDMOS transistor
                 Rev. 02 -- 17 February 2009                                              Product data sheet




1. Product profile

          1.1 General description
              A 300 W LDMOS RF power transistor for broadcast applications and industrial, scientific
              and medical applications in the HF to 500 MHz band.

              Table 1.   Production test information
              Mode of operation      f              VDS            PL              Gp             D
                                     (MHz)          (V)            (W)             (dB)           (%)
              CW                     225            50             300             27.2           70


CAUTION
                   This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
                   during transport and handling.




          1.2 Features
              I Typical CW performance at frequency of 225 MHz, a supply voltage of 50 V and an
                IDq of 900 mA:
                 N Average output power = 300 W
                 N Power gain = 27.2 dB
                 N Efficiency = 70 %
              I Easy power control
              I Integrated ESD protection
              I Excellent ruggedness
              I High efficiency
              I Excellent thermal stability
              I Designed for broadband operation (HF and VHF band)
              I Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances
                (RoHS)

          1.3 Applications
              I Industrial, scientific and medical applications
              I Broadcast transmitter applications
NXP Semiconductors                                                                                            BLF573S
                                                                                        HF / VHF power LDMOS transistor



2. Pinning information
                     Table 2.       Pinning
                     Pin                Description                                  Simplified outline       Graphic symbol
                     1                  drain
                                                                                              1                                       1
                     2                  gate
                                                                                                    3
                     3                  source                               [1]
                                                                                              2                              2
                                                                                                                                      3
                                                                                                                              sym112


                     [1]    Connected to flange.


3. Ordering information
                     Table 3.       Ordering information
                     Type number            Package
                                            Name       Description                                                               Version
                     BLF573S                -          earless flanged LDMOST ceramic package, 2 leads                           SOT502B


4. Limiting values
                     Table 4.   Limiting values
                     In accordance with the Absolute Maximum Rating System (IEC 60134).
                     Symbol          Parameter                          Conditions                            Min            Max            Unit
                     VDS             drain-source voltage                                                     -              110            V
                     VGS             gate-source voltage                                                      -0.5           +11            V
                     ID              drain current                                                            -              42             A
                     Tstg            storage temperature                                                      -65            +150           

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