ARF449A Datasheet, PDF (4/4 Pages) Advanced Power Technology – N-CHANNEL ENHANCEMENT MODE RF POWER MOSFETs

ARF449A/449B
81.36 MHz Test Circuit
Parts List
C1 -- 680pF Unelco
C2-C4 -- Arco 463 Mica Trimmer
C5-C7 -- 1nF 500V COG chip
L1 -- 0.8" #18 AWG into hairpin ~19nH
L2-L3 -- 3t #18 AWG .25" ID ~50nH
L4 -- 10t #18 AWG .25" ID ~470nH
L5 -- VK200-4B ferrite choke ~3uH
R1 -- 25 Ohm 1/2W Carbon
T1 -- 4:1 Broadband Transformer
L5
C6
C7
L4
L2 ^C5
L3
+
150V
-
RF Output
RF Input
T1
L1
C2
C1 R1
C3
C4
DUT
81.36 MHz Test Circuit
TO-247 Package Outline
4.69 (.185)
5.31 (.209)
1.49 (.059)
2.49 (.098)
Top View
15.49 (.610)
16.26 (.640)
6.15 (.242) BSC
20.80 (.819)
21.46 (.845)
5.38 (.212)
6.20 (.244)
3.55 (.138)
3.81 (.150)
Dimensions in Millimeters and (Inches)
NOTE: The ARF446 and ARF447 comprise a symmetric
pair of RF power transistors and meet the same electrical
specifications. The device pin-outs are the mirror image
of each other to allow ease of use as a push-pull pair.
4.50 (.177) Max.
0.40 (.016)
0.79 (.031)
19.81 (.780)
20.32 (.800)
1.01 (.040)
1.40 (.055)
2.21 (.087)
2.59 (.102)
5.45 (.215) BSC
2-Plcs.
2.87 (.113)
3.12 (.123)
1.65 (.065)
2.13 (.084)
Device
ARF449A ARF449B
Gate
Drain
Source
Source
Drain
Gate
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