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16
High-Voltage RF MOSFETs
Part Number Pout
(W)
Freq.
(MHz) Vdd/Bvdss (V) Rthjc
(OC/W)
Package
Style
Class of
Operation
ARF449AG/BG 90 120 150/450 0.76 TO-247 A-E
ARF463AG/BG 100 100 125/500 0.7 TO-247 A-E
ARF463AP1G/BP1G 100 100 125/500 0.7 TO-247 A-E
ARF446G/ARF447G 140 65 250/900 0.55 TO-247 A-E
ARF521 150 150 165/500 0.6 M174 A-E
ARF460AG/BG 150 65 125/500 0.5 TO-247 A-E
ARF461AG/BG 150 65 250/1000 0.5 TO-247 A-E
ARF465AG/BG 150 60 300/1200 0.5 TO-247 A-E
ARF468AG/BG 270 45 165/500 0.38 TO-264 A-E
ARF475FL 300 150 165/500 0.31 T3A A-E
ARF476FL 300 150 165/500 0.31 T3 A-E
ARF466AG/BG 300 45 200/1000 0.35 TO-264 A-E
ARF466FL 300 45 200/1000 0.13 T3A A-E
ARF479 300 150 165/500 0.31 T3C A-E
ARF469AG/BG 350 45 165/500 0.28 TO-264 A-E
ARF477FL 400 65 165/500 0.18 T3A A-E
ARF1500 750 40 125/500 0.12 T1 A-E
ARF1501 750 40 250/1000 0.12 T1 A-E
ARF1510 750 40 700/1000 0.12 T1 D
ARF1511 750 40 380/500 0.12 T1 D
ARF1519 750 25 250/1000 0.13 T2 A-E
D SS
GGSSSS
The ARF family of RF power MOSFETs is optimized for appli-
cations requiring frequencies as high as 150 MHz and operat-
ing voltages as high as 400V. Historically, RF power MOSFETs
were limited to applications of 50V or less. This limitation has
been removed by combining Microchip’s high-voltage MOS-
FET technology with RF-specic die geometries.
Higher Vdd means higher load impedance. For 150W output
from a 50V supply, the load impedance is only 8Ω. At 125V,
the load impedance is 50Ω. The higher impedance allows
simpler transformers and combiners. Paralleled devices can
still operate into reasonable and convenient impedances.
The increased operating voltage also lowers the DC current
required for any given power output, increasing eciency and
reducing the size, weight and cost of other system compo-
nents. High breakdown voltage is a necessity in high-ecien-
cy switchmode ampliers, such as class C-E, which can see
peak drain voltages of over 4x the applied Vdd.
High-Frequency RF MOSFETs
The VRF family of RF MOSFETs includes improved
replacements for industry-standard RF transistors.
They provide improved ruggedness by increasing
the Bvdss over 30 percent from the industry-stan-
dard 125V to 170V minimum. Low-cost angeless
packages are another improvement that shows
Microchip’s dedication to optimizing performance,
reducing cost and improving reliability. We will con-
tinue to oer more products with the new reduced-
cost angeless packages.
Part Number Pout
(W)
Freq.
(MHz)
Gain Typ
(dB)
E.Typ
(%) Vdd/Bvdss (V) Rthjc
(OC/W)
Package
Style
VRF148A 30 175 16 50 65/170 1.52 M113
VRF141 150 175 13 45 28/80 0.60 M174
VRF151 150 175 14 50 65/170 0.60 M174
VRF152 150 175 14 50 50/140 0.60 M174
VRF150 150 150 11 50 65/170 0.60 M174
VRF161 200 175 25 50 65/170 0.50 M177
VRF151G 300 175 16 55 65/170 0.30 M208
VRF2933 300 150 25 50 65/170 0.27 M177
VRF2944 400 150 25 50 65/170 0.22 M177
VRF154FL 600 30 17 45 65/170 0.13 T2
VRF157FL 600 30 21 45 65/170 0.13 T2
VRF164FL 600 30 21 45 65/170 0.10 T2
TO-247 TO-264
T1 T2
T3A T3C
T4 T4A T5
M208M113/M174/
M177
T2B
T3
T14