TO-247 Package Outline

15.49 (.610)

16.26 (.640)

5.38 (.212)

6.20 (.244)

6.15 (.242) BSC

4.50 (.177) Max.

19.81 (.780)

20.32 (.800)

20.80 (.819)

21.46 (.845)

1.65 (.065)

2.13 (.084)

1.01 (.040)

1.40 (.055)

5.45 (.215) BSC

3.55 (.138)

3.81 (.150)

2.87 (.113)

3.12 (.123)

4.69 (.185)

5.31 (.209)

1.49 (.059)

2.49 (.098)

2.21 (.087)

2.59 (.102)

0.40 (.016)

0.79 (.031)

2-Plcs.

Top View

ARF446

Device

ARF447

Gate

Drain

Source

Source

Drain

Gate

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.

ARF446/447

L1

C1

T1

R1

DUT

L2

L3

C2

C3

C4

C5

C6

L4

250V

+

-

RF Output

RF Input

C1-C3 -- Arco 465 or equivalent

C4-C6 -- 1nF 500V COG chip

L1 -- 2t #18 AWG .25" ID

L2 -- 3t #18 AWG .25" ID

L3 -- 8t #18 AWG .25" ID

L4 -- VK200-4B ferrite choke 3mH

R1 -- 25 Ohm 1/2W Carbon

T1 -- 4:1 Broadband Transformer

40.68 MHz Test Circuit

Parts List

40.68 MHz Test Circuit

APT’s products are covered by one or more of U.S.patents 4,895,810 5,045,903 5,089,434 5,182,234 5,019,522

5,262,336 6,503,786 5,256,583 4,748,103 5,283,202 5,231,474 5,434,095 5,528,058 and foreign patents. US and Foreign patents pending. All Rights Reserved.