BLF888

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: BLF888D

UHF power LDMOS transistor

A 500 W LDMOS RF power transistor for broadcast transmitter applications and industrial applications. The transistor is optimized for digital applications and can deliver 110 W average DVB-T broadband over the full UHF band from 470 MHz to 860 MHz. The excellent ruggedness of this device makes it ideal for digital transmitter applications.

Features and benefits

  • 2-Tone performance at 860 MHz, a drain-source voltage VDS of 50 V and a quiescent drain current IDq = 1.3 A:
    • Peak envelope power load power = 500 W
    • Power gain = 19 dB
    • Drain efficiency = 46 %
    • Third order intermodulation distortion = -32 dBc
  • DVB performance at 858 MHz, a drain-source voltage VDS of 50 V and a quiescent drain current IDq = 1.3 A:
    • Average output power = 110 W
    • Power gain = 19 dB
    • Drain efficiency = 31 %
    • Shoulder distance = -31 dBc (4.3 MHz from center frequency)

  • Integrated ESD protection
  • Advanced flange material for optimum thermal behavior and reliability
  • Excellent ruggedness
  • High power gain
  • High efficiency
  • Designed for broadband operation (470 MHz to 860 MHz)
  • Excellent reliability
  • Internal input matching for high gain and optimum broadband operation
  • Easy power control
  • Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)

Applications

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

Parametrics

Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 470 860 MHz
PL(1dB) nominal output power at 1 dB gain compression 500 W
Test signal: 2-Tone, class AB
Gp power gain VDS = 50 V 18 19 dB
ηD drain efficiency VDS = 50 V; f = 860 MHz; IDq = 1.3 A 42 46 %
PL(AV) average output power 250 W
PL(PEP) peak envelope power 500 W
IMD3 third-order intermodulation distortion VDS = 50 V; IDq = 1.3 A -32 -28 dBc

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))
BLF888 CDFM2
(SOT979A)
sot979a_po Bulk Pack Discontinued Standard Marking BLF888,112
(9340 621 01112)

Discontinuation information

Type number Ordering code (12NC) Last-time buy date Last-time delivery date Replacement product DN Notice Status Comments
BLF888 9340 621 01112 2016-03-31 2016-06-30 BLF888D Ampleon-DN_201506035DN Full Withdrawal Replacement: BLF888A/B/D

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 D1 drain1
2 D2 drain2
3 G1 gate1
4 G2 gate2
5 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
BLF888 9340 621 01112 BLF888,112 RFMW Buy Not available
DigiKey Buy

Design support

Title Type Date
PCB Design BLF888 (Data sheet) Design support 2012-05-14