BF494 Fairchild Semiconductor, BF494 Datasheet - Page 3

• Manufacturer Part Number: BF494
• Description: TRANSISTOR RF NPN 20V TO-92
• Manufacturer: Fairchild Semiconductor

Specifications of BF494

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (max): 20V
• Power - Max: 350mW
• Dc Current Gain (hfe) (min) @ Ic, Vce: 67 @ 1mA, 10V
• Current - Collector (ic) (max): 30mA
• Mounting Type: Through Hole
• Package / Case: TO-92-3 (Standard Body), TO-226
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Gain: -
• Frequency - Transition: -
• Noise Figure (db Typ @ F): -

BF494 Rev. A
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to
be an exhaustive list of all such trademarks.
PRODUCT STATUS DEFINITIONS
Definition of Terms
ACEx™
ActiveArray™
Bottomless™
Build it Now™
CoolFET™
CROSSVOLT™
DOME™
EcoSPARK™
E
EnSigna™
FACT™
FAST
FASTr™
FPS™
FRFET™
Across the board. Around the world.™
The Power Franchise
Programmable Active Droop™
DISCLAIMER
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 LIABILITY ARISING OUT OF THE APPLICATION OR USE
OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE
RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPE-
CIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
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 CORPORATION.
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
Advance Information
Preliminary
No Identification Needed
Obsolete
CMOS™
®
Datasheet Identification
®
FACT Quiet Series™
GlobalOptoisolator™
GTO™
HiSeC™
I
i-Lo™
ImpliedDisconnect™
IntelliMAX™
ISOPLANAR™
LittleFET™
MICROCOUPLER™
MicroFET™
MicroPak™
MICROWIRE™
MSX™
MSXPro™
2
C™
Formative or In Design
First Production
Full Production
Not In Production
Product Status
OCX™
OCXPro™
OPTOLOGIC
OPTOPLANAR™
PACMAN™
POP™
Power247™
PowerEdge™
PowerSaver™
PowerTrench
QFET
QS™
QT Optoelectronics™
Quiet Series™
RapidConfigure™
RapidConnect™
µSerDes™
ScalarPump™
®
3
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 device or system, or to affect its safety or effectiveness.
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
This datasheet contains preliminary data, and
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.
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
®
®
SILENT SWITCHER
SMART START™
SPM™
Stealth™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
TCM™
TinyBoost™
TinyBuck™
TinyPWM™
TinyPower™
TinyLogic
TINYOPTO™
TruTranslation™
UHC™
®
Definition
®
UltraFET
UniFET™
VCX™
Wire™
www.fairchildsemi.com
®
Rev. I20