BF998B-GS08 Vishay, BF998B-GS08 Datasheet

BF998B-GS08

Manufacturer Part Number
BF998B-GS08
Description
Manufacturer
Vishay
Datasheet

Specifications of BF998B-GS08

Application
UHF
Channel Type
N
Channel Mode
Depletion
Continuous Drain Current
0.03A
Drain Source Voltage (max)
12V
Power Gain (typ)@vds
28@8VdB
Noise Figure (max)
1.5(Typ)dB
Package Type
SOT-143
Pin Count
3 +Tab
Forward Transconductance (typ)
0.024S
Input Capacitance (typ)@vds
2.1@8V@Gate 1/1.1@8V@Gate 2pF
Output Capacitance (typ)@vds
1.05@8VpF
Reverse Capacitance (typ)
0.025@8VpF
Operating Temp Range
-65C to 150C
Mounting
Surface Mount
Number Of Elements
1
Power Dissipation (max)
200mW
Screening Level
Military
Lead Free Status / Rohs Status
Compliant
N-Channel Dual Gate MOS-Fieldeffect Tetrode, Depletion Mode
Features
Applications
Input and mixer stages in UHF tuners.
Mechanical Data
Typ: BF998
Case: SOT-143 Plastic case
Weight: approx. 8.0 mg
Marking: MO
Pinning:
1 = Source, 2 = Drain,
3 = Gate 2, 4 = Gate 1
Typ: BF998R
Case: SOT-143R Plastic case
Weight: approx. 8.0 mg
Marking: MOR
Parts Table
Document Number 85011
Rev. 1.6, 31-Aug-05
• Integrated gate protection diodes
• Low noise figure
• Low feedback capacitance
• High cross modulation performance
• Low input capacitance
• High AGC-range
• High gain
• Lead (Pb)-free component
• Component in accordance to RoHS 2002/95/EC
BF998
BF998A
BF998B
BF998R
BF998RA
BF998RB
BF998RW
BF998RAW
BF998RBW
and WEEE 2002/96/EC
Part
BF998A-GS08 or BF998B-GS08
BF998A-GS08
BF998B-GS08
BF998RA-GS08 or BF998RB-GS08
BF998RA-GS08
BF998RB-GS08
BF998RAW-GS08 or BF998RBW-GS08
BF998RAW-GS08
BF998RBW-GS08
Ordering Code
e3
BF998 / BF998R / BF998RW
Pinning:
1 = Source, 2 = Drain,
3 = Gate 2, 4 = Gate 1
Typ: BF998RW
Case: SOT-343R Plastic case
Weight: approx. 6.0 mg
Marking: WMO
Pinning:
1 = Source, 2 = Drain,
3 = Gate 2, 4 = Gate 1
MO
MO
MO
MOR
MOR
MOR
WMO
WMO
WMO
2
3
4
1
4
1
1
4
3
Marking
2
3
2
Electrostatic sensitive device.
Observe precautions for handling.
SOT-143R
SOT-343R
SOT-143
Vishay Semiconductors
SOT143
SOT143
SOT143
SOT143R
SOT143R
SOT143R
SOT343R
SOT343R
SOT343R
Package
19216
www.vishay.com
1

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BF998B-GS08 Summary of contents

Page 1

... Case: SOT-143 Plastic case Weight: approx. 8.0 mg Marking: MO Pinning Source Drain Gate Gate 1 Typ: BF998R Case: SOT-143R Plastic case Weight: approx. 8.0 mg Marking: MOR Parts Table Part BF998 BF998A-GS08 or BF998B-GS08 BF998A BF998A-GS08 BF998B BF998B-GS08 BF998R BF998RA-GS08 or BF998RB-GS08 BF998RA BF998RA-GS08 BF998RB-GS08 BF998RB BF998RW BF998RAW-GS08 or BF998RBW-GS08 ...

Page 2

... Cu 3 Test condition Part = - G1S G2S = 10 mA G2S mA G1S G2S G1S BF998/ G1S G2S BF998R/ BF998RW BF998A/ BF998RA/ BF998RAW BF998B/ BF998RB/ BF998RBW = 20 µ G2S µ G1S D Test condition Symbol |y | 21s C issg1 = G2S issg2 C rss C oss Value Unit 200 mW 150 ° 150 ° ...

Page 3

... Vishay Semiconductors Min Typ. Max 28 16 1.0 1.5 S12 S22 LOG ANG LOG MAG MAG deg -55.94 83.6 -0.08 -50.26 76 ...

Page 4

... BF998 / BF998R / BF998RW Vishay Semiconductors Typical Characteristics (Tamb = 25 °C unless otherwise specified) 300 250 200 150 100 100 120 140 160 - Ambient Temperature ( ° 12159 T amb Figure 1. Total Power Dissipation vs. Ambient Temperature 30 V G1S G2S – Drain Source Voltage ( V ) 12812 DS Figure 2. Drain Current vs. Drain Source Voltage ...

Page 5

... V –20 –25 –0.4 V –30 –35 –40 1.5 0 12821 Figure 10. Short Circuit Forward Transfer Admittance 0.00 12822 Ω 0 Vishay Semiconductors 100 MHz G2S f = 100...1300 MHz 400 MHz 20 mA 700 MHz 1000 MHz 1300 MHz 1300 MHz 1000 MHz 700 MHz ...

Page 6

... BF998 / BF998R / BF998RW Vishay Semiconductors j j0.5 j0.2 0 0.2 0 –j0.2 1300 MHz 1000 –j0.5 12960 –j Figure 12. Input Reflection Coefficient ° 120 ° 60 ° 150 ° 1200 1300 MHz 200 100 180 ° 0.08 –150 ° –120 ° –60 ° –90 ° ...

Page 7

... Package Dimensions of SOT143R in mm Document Number 85011 Rev. 1.6, 31-Aug-05 BF998 / BF998R / BF998RW 0.9 (0.035) 0.15 (0.006) 0.75 (0.029) 0.08 (0.003) 0...0.1 (0...0.004) 1.17 (0.046) ISO Method E 96 12240 Vishay Semiconductors 1.1 (0.043) 0.9 (0.035) 96 12239 www.vishay.com 7 ...

Page 8

... BF998 / BF998R / BF998RW Vishay Semiconductors Package Dimensions of SOT343R in mm www.vishay.com 8 96 12238 Document Number 85011 Rev. 1.6, 31-Aug-05 ...

Page 9

... Various national and international initiatives are pressing for an earlier ban on these substances. Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 ...

Page 10

... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...

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