Microwave Journal
www.microwavejournal.com/articles/20281-rf-mosfet-replacements

RF MOSFET Replacements

July 23, 2013

ST-PRPhotoRichardson RFPD Inc. announces immediate availability and full design support capabilities for a range of RF MOSFET replacement partsfrom STMicroelectronics (ST). ST's legacy RF MOSFET power transistors represent pin-for-pin replacements for several discontinued products from NXP, including the BLF175, BLF177 and BLF278.

ST's replacement parts provide equivalent performance at a reduced cost. Key features of the devices include:

Part Number

Frequency
(MHz)

CW Power Out

(W)

Supply Voltage
(V)

Gain
(dB)

Efficiency
(%)

Package

SD2918

1-200

30

50

18

50

M113

SD2931-10W

1-230

150

50

14

55

M174

SD2942W

1-250

350

50

15

55

M244

A complete cross-reference chartis also available.

In addition to maintaining its legacy products, ST continues to develop new products to address high performance designs. For customers looking for higher performance without the necessity of a complete circuit redesign, ST offers several new devices for broadcast, MRI, RF plasma generator, and laser driver applications. The SD49xx series feature 20:1 VSWR. STAC packaged devices include characterization under pulsed conditions. Key features of these devices include:

Part Number

Frequency
(MHz)

CW Power
Out
(W)

Supply
Voltage
(V)

Breakdown
Voltage
(V)

Gain
(dB)

Efficiency
(%)

RthJ-C
(ºC/W)

Package

SD2933W

1-155

300

50

125

20

50

0.27

M177

SD2943W

1-150

350

50

130

22

60

0.27

M177

SD3933

1-200

350

100

250

20

50

0.27

M177

SD4933

1-100

300

50

200

20

68

0.27

M177

SD4931

1-175

150

50

200

14.5

58

0.45

M174

STAC2932B

1-175

300

50

125

20

68

0.28

STAC

STAC4932B

1-175

300

50

200

20

68

0.28

STAC

STAC2942B

1-175

350

50

130

21

75

0.28

STAC

Richardson RFPD's design advisors provide extensive technical expertise and design-in assistance for the complete range of ST products. Devices are in stock and available for immediate delivery. To find more information, or to purchase these products today on the Richardson RFPD website, please visit the STMicroelectronics Offers NXP RF MOSFET Replacements webpage.The devices are also available by calling 1-800-737-6937 (within North America).

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