UHF power LDMOS transistor

A 140 W LDMOS RF power transistor for broadcast transmitter applications and industrial applications. The transistor can deliver 140 W from HF to 1 GHz. The excellent ruggedness and broadband performance of this device makes it ideal for digital transmitter applications.

Features and benefits

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

Applications

  • Communication transmitter applications in the UHF band
  • Industrial applications in the UHF band

Downloads

Datasheet
All application notes
All models
All documentation

All documents

Design tool

RF Power Lifetime Calculator

Transistor:
BLF881

UHF power LDMOS transistor

°C

Parametrics

Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 1 1000 MHz
PL(1dB) nominal output power at 1 dB gain compression 140 W
Test signal: CW
Gp power gain VDS = 50 V 20 21 dB
ηD drain efficiency VDS = 50 V; f = 860 MHz; IDq = 0.5 A 45 49 %
PL(PEP) peak envelope power VDS = 50 V 140 W
IMD3 third-order intermodulation distortion VDS = 50 V; IDq = 0.5 A -34 -30 dBc

Package / Packing

Type number Package Outline version Reflow-/Wave
soldering
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLF881 SOT467C
(SOT467C)
sot467c_po Bulk Pack Active Standard Marking BLF881,112
(9340 639 47112)

Pinning info

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

Quality

Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
BLF881 BLF881,112 BLF881 Always Pb-free 1 1
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLF881 9340 639 47112 BLF881,112 RFMW Buy Request samples
DigiKey Buy

Design support

Title Type Date
PCB Design BLF881(S) (Data sheet) Design support 2012-02-24
PCB Design BLF881(S) (AN10945) Design support 2012-02-24
BLF881 ADS-2016 Simulation model 2017-01-03