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參數(shù)資料
| 型號： | BLV857 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 功率晶體管 |
| 英文描述： | UHF Linear push-pull power transistor(UHF 線性推挽式功率晶體管) |
| 中文描述： | 2 CHANNEL, UHF BAND, Si, NPN, RF POWER TRANSISTOR |
| 封裝： | CERAMIC, SOT-324B, 5 PIN |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 138K |
| 代理商： | BLV857 |
1997 Jan 16
9
Philips Semiconductors
Product specification
UHF linear push-pull power transistor
BLV857
List of components
Notes
1.
2.
American Technical Ceramics type 100A or capacitor of same quality.
The striplines are on a double copper-clad printed-circuit board: Rogers ULTRALAM 2000 (B0300M1046QB)
(
ε
r
= 2.55); thickness 0.76 mm.
Position of C25 and C26: distance of centre capacitor to transistor BLV857 = 7.5 mm.
Position of C27 and C28: distance of centre capacitor to balun B2 = 1.5 mm.
The sense resistor on the bias unit is implemented as a stripline L17, in this way we obtain a small sense resistor
(approximately 80 m
) which can handle the dissipated power.
3.
4.
COMPONENT
C1, C2, C3, C5, C6,
C7, C8, C9, C10
C4
C11, C12, C13,
C14, C30, C31
C15
C20
C21
C22, C24, C26, C28 Tekelec Giga trim 37271; note 3
C23
multilayer ceramic chip capacitor; note 1 7.5 pF
C25
multilayer ceramic chip capacitor;
notes 1 and 3
C27
multilayer ceramic chip capacitor;
notes 1 and 3
C29
multilayer ceramic chip capacitor; note 1 100 pF
L1, L2, L15, L16
stripline; note 2
L3, L4
stripline; note 2
L5, L6
stripline; note 2
L7, L8
stripline; note 2
L9, L10
stripline; note 2
L11, L12
stripline; note 2
L13, L14
stripline; note 2
L17
stripline; notes 2 and 4
B1, B2
Semi rigid coax balun UT70-25
R1
SMD resistor
R2
SMD resistor
R3
SMD resistor
R4
SMD resistor
R5, R6
SMD resistor
P1
potentiometer
T1
NPN transistor
T2
double PNP transistor
DESCRIPTION
VALUE
DIMENSIONS CATALOGUE No.
805
2222 590 16627
multilayer ceramic chip capacitor
10 nF
solid aluminium capacitor
multilayer ceramic chip capacitor
47
μ
F; 25 V
100 nF
2222 030 36479
2222 591 16641
1206
solid aluminium capacitor
multilayer ceramic chip capacitor; note 1 18 pF
multilayer ceramic chip capacitor; note 1 3 pF
10
μ
F; 63 V
2222 030 38109
0.6 to 4.5 pF
11 pF
9.1 pF
50
50
26.5
15
104
38.8
50
76.2
Z = 25
±
1.5
220
1.8
4.3 k
33
3.3
2 k
BD139
BCV62
30.6
×
2 mm
10
×
2 mm
3
×
5 mm
3
×
10 mm
6
×
0.5 mm
3
×
3 mm
22.5
×
2 mm
120
×
1 mm
70 mm
805
805
805
805
805
2322 734 22201
2322 734 21808
2322 734 24302
2322 734 23309
2322 734 23308
9330 912 20112
5322 130 60505
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