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BLF881S - UHF Power LDMOS Transistor

Download the BLF881S datasheet PDF. This datasheet also covers the BLF881 variant, as both devices belong to the same uhf power ldmos transistor family and are provided as variant models within a single manufacturer datasheet.

General Description

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.

Key Features

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  • 2-Tone performance at 860 MHz, a drain-source voltage VDS of 50 V and a quiescent drain current IDq = 0.5 A: ‹ Peak envelope power load power = 140 W ‹ Power gain = 21 dB ‹ Drain efficiency = 49 % ‹ Third order intermodulation distortion =.
  • 34 dBc.
  • DVB performance at 858 MHz, a drain-source voltage VDS of 50 V and a quiescent drain current IDq = 0.5 A: ‹ Average output power = 33 W ‹ Power gain = 21 dB ‹ Drain efficiency = 34 % ‹ Shoulder distance.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (BLF881_NXP.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
BLF881; BLF881S UHF power LDMOS transistor Rev. 01 — 10 December 2009 Preliminary data sheet 1. Product profile 1.1 General description 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. Table 1. Typical performance RF performance at VDS = 50 V in a common-source 860 MHz test circuit. Mode of operation 2-tone, class AB DVB-T (8k OFDM) [1] f (MHz) f1 = 860; f2 = 860.1 858 PL - PL(PEP) 140 - PL(AV) Gp (W) 33 21 21 ηD 49 34 IMD3 −34 - IMDshldr (dBc) −33[1] (W) (W) (dB) (%) (dBc) Measured [dBc] with delta marker at 4.3 MHz from center frequency.