ARF450 查看數據表（PDF） - Advanced Power Technology
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ARF450 Datasheet PDF : 4 Pages
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L3
R1
100 TL1
L1
J1 T1
C1
TL2
R2
100
L2
DUT L4
C5 C6
L5
C7
+
150V
-
C3
J2
C2
T2
C4
ARF450
C1 75-380 pF ARCO 465
C2 25-115 pF ARCO 462
C3 -C5 2 nF NPO 500V chip
C6 10 nF 500V chip
C7 .47 uF Ceramic 500V
L1-L2 50 nH 3t # 14 ga .3" dia
L3-L4 .68 uH 12t #24 enam
L5 2t #20 on bead approx 2 uH
R1-R2 100 ohm 1 W
T1 9:1 RF transformer
T2 1:1 coax balun
TL1-TL2 Printed line 1" long
81.36 MHz Test Circuit
R1
6.8K
+
Bias 0-6V
-
R4
10K
+
C1
C2
1
10n
C3
.47
+
80 V
L3
-
T1 9:1 RF Transformer on type 43 beads
T2 4:1 RF Transformer. Made from two pieces
of 25 ohm semi-rigid coax with type 43
ferrite bead loading.
T1
R8
J1
20
10W
DUT
C6 J2
50p
C4 C5
.1 1n
T2
30 MHz Linear Test Circuit
.875
.375 1
ARF450
.582
BeO
11405
.375 8
.125 .210
.210 .125
.060 typ.
.176
Typical Mounting
1
HAZARDOUS MATERIAL
WARNING
ARF450
The ceramic portion of the
3
BeO
11405
device between leads and
;y;y;y;y;y;y 6
5,8
1,4
7
2
.062
.005
dims: inches
8
ARF 450
Heat Sink
Clamp
Compliant
layer
mounting surface is beryllium
oxide. Beryllium oxide dust is
highly toxic when inhaled. Care
must be taken during handling
and mounting to avoid damage
to this area. These devices
must never be thrown away with
general industrial or domestic
waste.
Thermal Considerations and Package Mounting:
The rated 650W power dissipation is only available when the pack-
age mounting surface is at 25˚C and the junction temperature is 200˚C.
The thermal resistance between junctions and case mounting surface
is 0.27 ˚C/W. When installed, an additional thermal impedance of 0.05
˚C/W between the package base and the mounting surface is typical.
Insure that the mounting surface is smooth and flat. Thermal joint com-
pound must be used to reduce the effects of small surface irregulari-
ties. The heatsink should incorporate a copper heat spreader to
obtain best results.
The package is designed to be clamped to a heatsink. A clamp-
ed joint maintains the required mounting pressure while allowing for
thermal expansion of both the device and the heat sink. An L-clamp,
a compliant layer of plastic or rubber, and a 6-32 (M3.5) screw can
provide the minimum 35 lb required mounting force. T = 4 in-lb.
USA:
EUROPE:
405 S.W. Columbia Street
Chemin de Magret
Bend, Oregon 97702-1035
F-33700 Merignac - France
Phone: (541) 382 - 8028 FAX: (541) 388 -0364
Phone: (33) 5 57 92 15 15 FAX: (33) 5 56 47 97 61
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