Page 1
BF245A/BF245B/BF245C
N-Channel Amplifiers
• This device is designed for VHF/UHF amplifiers.
• Sourced from process 50.
BF245A/BF245B/BF245C
12
TO-92
350
2.8
6
mW
mW/°C
2.2
3.8
7.5
6.5
15
25
GSD
Absolute Maximum Ratings
Symbol Parameter Value Units
V
DG
V
GS
I
GF
P
D
T
J, TSTG
Drain-Gate Voltage 30 V
Gate-Source Voltage 30 V
Forward Gate Current 10 mA
Total Device Dissipation @TA=25°C
Derate above 25°C
Operating and Storage Junction Temperature Range - 55 ~ 150 °C
Electrical Characteristics
Symbol Parameter Test Condition Mi n. Ty p. Max. Units
Off Characteristics
V
(BR)GSs
V
GS
V
GS
I
GSS
On Characteristics
I
DSS
On Characteristics
g
fs
Gate-Source Breakdown Voltage VDS = 0, IG = 1µA30 V
Gate-Source BF245A
(off) Gate-Source Cut-off Voltage VDS = 15V, ID = 10nA -0.5 -8 V
Gate Reverse Current VGS = 20V, VGS = 0 5 nA
Zero-Gate Voltage Drain Current
Common Source Forward
Transconductance
TC=25°C unless otherwise noted
TC=25°C unless otherwise noted
V
= 15V, ID = 200µA0.4
BF245B
BF245C
BF245A
BF245B
BF245C
DS
V
= 15V, VGS = 0 2
GS
VGS = 15V, VGS = 0, f = 1KHz 3 6.5 m
1.6
3.2
V
mA
Ω
©2002 Fairchild Semiconductor Corporation Rev. A, March 2002
Page 2
Package Demensions
4.58
0.46
±0.10
+0.25
–0.15
BF245A/BF245B/BF245C
TO-92
±0.20
4.58
±0.40
1.27TYP
[1.27
±0.20
3.86MAX
±0.10
1.02
+0.10
–0.05
0.38
14.47
1.27TYP
]
3.60
±0.20
[1.27
±0.20
]
0.38
+0.10
–0.05
(0.25)
(R2.29)
Dimensions in Millimeters
©2002 Fairchild Semiconductor Corporation Rev. A, March 2002
Page 3
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2
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E
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STAR*POWER is used under license
®
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FASTr™
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Power247™
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®
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QS™
QT Optoelectronics™
Quiet Series™
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SMART START™
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SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
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®
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®
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FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
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NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
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As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
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PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In
Design
Preliminary First Production This datasheet contains preliminary data, and
No Identification Needed Full Production This datasheet contains final specifications. Fairchild
Obsolete Not In Production This datasheet contains specifications on a product
©2002 Fairchild Semiconductor Corporation Rev. H4
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
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