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PDF BLF888 Data sheet ( Hoja de datos )
| Número de pieza | BLF888 | |
| Descripción | UHF Power LDMOS Transistor | |
| Fabricantes | NXP Semiconductors | |
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BLF888
UHF power LDMOS transistor
Rev. 01 — 16 December 2008
Objective data sheet
1. Product profile
1.1 General description
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.
Table 1. Application information
RF performance at VDS = 50 V in a common source 860 MHz narrowband test circuit unless
otherwise specified.
Mode of operation f
PL(PEP) PL(AV) Gp ηD IMD3 IMDshldr
(MHz)
(W) (W) (dB) (%) (dBc) (dBc)
2-tone, class AB
f1 = 860; f2 = 860.1 500
250 20 45 <tbd> -
DVB-T (8k OFDM) 858
-
110 20 30 -
−32 [1]
[1] Measured [dBc] with delta marker at 4.3 MHz from center frequency.
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
1.2 Features
I 2-tone performance at 860 MHz, a drain-source voltage VDS of 50 V and a quiescent
drain current IDq = 1.4 A:
N Peak envelope power load power = 500 W
N Power gain = 20 dB
N Drain efficiency = 45 %
N Third order intermodulation distortion = <tbd> dBc
I DVB performance at 858 MHz, a drain-source voltage VDS of 50 V and a quiescent
drain current IDq = 1.4 A:
N Average output power = 110 W
N Power gain = 20 dB
N Drain efficiency = 30 %
N Shoulder distance = −32 dBc (4.3 MHz from center frequency)
I Integrated ESD protection
I Advanced flange material for optimum thermal behavior and reliability
1 page  
www.DNatXaSPheSete4Um.coicmonductors
7. Package outline
Flanged LDMOST ceramic package; 2 mounting holes; 4 leads
BLF888
UHF power LDMOS transistor
SOT979A
D
A
F
D1
U1
q
H1
12
B
C
w2 C
w1 A B
c
H U2
p
5
L3
4
A
b w3
e
E
E1
Q
w3
0 5 10 mm
scale
0.25
0.010
Dimensions
Unit(1) A b c D D1 E E1 e F H H1 L p Q q U1 U2 w1 w2
max 5.77 11.81 0.15 31.55 31.37 10.29 10.29
1.969 17.50 25.53 3.86 3.30 3.02
41.28 10.29
mm nom
13.72
35.56
0.25 0.51
min 4.80 11.56 0.10 30.94 31.12 10.03 10.03
1.689 17.25 25.27 3.35 3.05 2.77
41.02 10.03
max 0.227 0.465 0.006 1.242 1.235 0.405 0.405
0.078 0.689 1.005 0.152 0.130 0.119
1.625 0.405
inches nom
0.540
1.400
0.010 0.020
min 0.189 0.455 0.004 1.218 1.225 0.395 0.395
0.067 0.679 0.995 0.132 0.120 0.109
1.615 0.395
Note
1. millimeter dimensions are derived from the original inch dimensions.
sot979a_po
Outline
version
SOT979A
IEC
References
JEDEC
JEITA
European
projection
Issue date
08-04-24
08-09-04
Fig 2. Package outline SOT979A
BLF888_1
Objective data sheet
Rev. 01 — 16 December 2008
© NXP B.V. 2008. All rights reserved.
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