BLF544

Download datasheet This product has been discontinued.
Click here for discontinuation information.
This product has been discontinued. Click here for discontinuation information.
The replacement is: BLF642

UHF power MOS transistor

N-channel enhancement mode vertical D-MOS power transistor encapsulated in a 6-lead, SOT171A flange package with a ceramic cap. All leads are isolated from the flange. A marking code showing gate-source voltage (VGS) information is provided for matched pair applications.

Features and benefits

  • High power gain
  • Easy power control
  • Gold metallization ensures excellent reliability
  • Good thermal stability
  • Designed for broadband operation.

Applications

  • Communication transmitters in the UHF frequency range

Parametrics

Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 100 1000 MHz
PL(1dB) nominal output power at 1 dB gain compression 20 W
Test signal: CW
Gp power gain VDS = 28 V; f = 960 MHz 7 dB
ηD drain efficiency VDS = 28 V; f = 960 MHz; IDq = 40 mA 50 %
PL output power VDS = 28 V; f = 960 MHz 20 W

Package / Packing

All type numbers in the table below are discontinued.

Type number Package Outline version Reflow-/Wave
soldering
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLF544 CDFM6
(SOT171A)
sot171a_po Bulk Pack Discontinued Standard Marking BLF544,112
(9339 973 20112)

Discontinuation information

Type number Ordering code (12NC) Last-time buy date Last-time delivery date Replacement product DN Notice Status Comments
BLF544 9339 973 20112 2014-03-31 2014-06-30 BLF642 Ampleon-DN_201306022DN Full Withdrawal

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 S source
2 S source
3 G gate
4 D drain
5 S source
6 S source

Quality

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLF544 9339 973 20112 BLF544,112 RFMW Buy Not available
DigiKey Buy

Design support

Title Type Date
BLF544 14V 40mA S-parameter Data S-parameter 2012-06-08
BLF544 28V 40mA S-parameter Data S-parameter 2012-06-08