Broadband power LDMOS transistor

A 35 W LDMOS RF power transistor for broadcast transmitter and industrial applications. The transistor is suitable for the frequency range HF to 1400 MHz. The excellent ruggedness and broadband performance of this device makes it ideal for digital applications.

Features and benefits

  • Integrated ESD protection
  • Excellent ruggedness
  • High power gain
  • High efficiency
  • Excellent reliability
  • Easy power control
  • Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances


  • Communication transmitter applications in the HF to 1400 MHz frequency range
  • Industrial applications in the HF to 1400 MHz frequency range


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Design tool

RF Power Lifetime Calculator


Broadband power LDMOS transistor



Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 1 1400 MHz
PL(1dB) nominal output power at 1 dB gain compression 35 W
Test signal: CW
Gp power gain VDS = 32 V 18 19 dB
ηD drain efficiency VDS = 32 V; f = 1300 MHz; IDq = 0.2 A 59 63 %
PL output power 35 W

Package / Packing

Type number Package Outline version Reflow-/Wave
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLF642 SOT467C
sot467c_po Bulk Pack Active Standard Marking BLF642,112
(9340 651 83112)

Pinning info

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


Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
BLF642 BLF642,112 BLF642 Always Pb-free 1 1
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLF642 9340 651 83112 BLF642,112 RFMW Buy Request samples
DigiKey Buy

Design support

Title Type Date
PCB Design BLF642 (Data sheet) Design support 2012-02-24
Ampleon Model Library for Microwave Office® Simulation model 2018-11-05
Ampleon Model Library Manual for Microwave Office® Simulation model 2018-11-05
Ampleon Simulation Example for Microwave Office® Simulation model 2018-11-05
BLF642 ADS-2016 Simulation model 2017-04-14