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                 BLF571
                 HF / VHF power LDMOS transistor
                 Rev. 02 -- 24 February 2009                                           Product data sheet




1. Product profile

          1.1 General description
              A 20 W LDMOS RF transistor for broadcast applications and industrial applications in the
              HF and VHF band.

              Table 1.   Production test performance
              Mode of operation                    f             VDS       PL            Gp         D
                                                   (MHz)         (V)       (W)           (dB)       (%)
              CW                                   225           50        20            27.5       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 50 mA:
                 N Average output power = 20 W
                 N Power gain = 27.5 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 (10 MHz to 500 MHz)
              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                                                                                                  BLF571
                                                                                          HF / VHF power LDMOS transistor



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


                     [1]    Connected to flange.


3. Ordering information
                     Table 3.       Ordering information
                     Type number            Package
                                            Name       Description                                                             Version
                     BLF571                 -          flanged LDMOST ceramic package; 2 mounting holes;                       SOT467C
                                                       2 leads


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                                                          -              3.6            A
                     Tstg            storage temperature                                                    -65            +150           

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