This product is not recommended for design-in.
The recommended type is: BLF989E

UHF power LDMOS transistor

A 750 W LDMOS RF power transistor for broadcast Doherty transmitter applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications.


Whitepaper Doherty Architectures in UHF

This White Paper explains different PA architectures which can be used in today’s UHF Broadcast industry. 

In this paper a brief discussion will be given to explain these new Doherty architectures and to help customers finding the best solution for their transmitter. Ampleon’s transistor family BLF8XX can support these Doherty architectures.

Click here to download.

Features and benefits

  • Designed for asymmetric Doherty operation
  • Very high efficiency enabling air cooled high power transmitters
  • Integrated ESD protection
  • Excellent ruggedness
  • High power gain
  • Excellent reliability
  • Easy power control
  • Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)


  • Broadcast transmitter applications in the UHF band
  • Digital broadcasting


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Design tool

RF Power Lifetime Calculator


UHF power LDMOS transistor



Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 470 790 MHz
PL(1dB) nominal output power at 1 dB gain compression 750 W
Test signal: DVB-T (8k OFDM)
VDS drain-source voltage 470-608 MHz band 50 V
Gp power gain 470-608 MHz band 17 dB
ηD drain efficiency 470-608 MHz band 52 %
PL(AV) average output power 470-608 MHz band 150 W
IMDshldr intermodulation distortion shoulder attenuation 470-608 MHz band -38 dBc
PAR peak-to-average ratio 470-608 MHz band 8 dB

Package / Packing

All type numbers in the table below are not recommended for design-in.

Type number Package Outline version Reflow-/Wave
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
sot539a_po Bulk Pack Active Standard Marking BLF888EU
(9340 699 27112)

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 D1 drain1 (peak)
2 D2 drain2 (main)
3 G1 gate1 (peak)
4 G2 gate2 (main)
5 S source


All type numbers in the table below are not recommended for design-in.

Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
BLF888E BLF888EU BLF888E Always Pb-free 1 1
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLF888E 9340 699 27112 BLF888EU RFMW Buy Request samples
DigiKey Buy

Design support