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3SK254 Schematic ( PDF Datasheet ) - NEC

Teilenummer 3SK254
Beschreibung RF AMPLIFIER FOR CATV TUNER N-CHANNEL Si DUAL GATE MOS FIELD-EFFECT TRANSISTOR 4 PINS SUPER MINI MOLD
Hersteller NEC
Logo NEC Logo 




Gesamt 6 Seiten
3SK254 Datasheet, Funktion
DATA SHEET
MOS FIELD EFFECT TRANSISTOR
3SK254
RF AMPLIFIER FOR CATV TUNER
N-CHANNEL Si DUAL GATE MOS FIELD-EFFECT TRANSISTOR
4 PINS SUPER MINI MOLD
FEATURES
• Low VDD Use
: (VDS = 3.5 V)
• Driving Battery
• Low Noise Figure : NF1 = 2.0 dB TYP. (f = 470 MHz)
NF2 = 0.8 dB TYP. (f = 55 MHz)
• High Power Gain : GPS = 19.0 dB TYP. (f = 470 MHz)
• Suitable for use as RF amplifier in CATV tuner.
• Automatically Mounting : Embossed Type Taping
• Small Package
: 4 Pins Super Mini Mold
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)
Drain to Source Voltage
Gate1 to Source Voltage
Gate2 to Source Voltage
VDSX
VG1S
VG2S
18
±8*1
±8*1
V
V
V
Gate1 to Drain Voltage
VG1D
18
V
Gate2 to Drain Voltage
VG2D
18
V
Drain Current
Total Power Dissipation
ID
PD
25
130*2
mA
mW
Channel Temperature
Tch 125 °C
Storage Temperature
Tstg –55 to +125 °C
*1: RL 10 k
*2: Free air
PACKAGE DIMENSIONS
(Unit: mm)
2.1±0.2
1.25±0.1
PIN CONNECTIONS
1. Source
2. Drain
3. Gate2
4. Gate1
PRECAUTION:
Avoid high static voltages or electric fields so that this device would not suffer from any damage due to those voltage
or fields.
Document No. P10585EJ2V0DS00 (2nd edition)
(Previous No. TD-2307)
Date Published August 1995 P
Printed in Japan
© 1993






3SK254 Datasheet, Funktion
3SK254
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this
document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
“Standard“, “Special“, and “Specific“. The Specific quality grade applies only to devices developed based on
a customer designated “quality assurance program“ for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact NEC Sales Representative in advance.
Anti-radioactive design is not implemented in this product.
M4 94.11
2

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