Bolivar Drive, P.O. Box 547, Bradford, PA 16701 USA
■
814-362-5536
■
Fax: 814-362-8883
■
www.koaspeer.com
E-14
Tapped Filter
LFA SERIES
Tapped Filter
Tapped Filter networks are used as low pass filters
for suppression of EMI/RFI noise. These compo-
nents filter out the high-frequency content of digital
signals and are used in I/O ports, such as RS 232
drivers and their corresponding connectors. KOA
Tapped Filter networks offer exceptional filtering
capabilities and the superior characteristics of
advanced thin film processing. A standard LFA
network, in a low profile, 20-pin QSOP, replaces 16
discrete resistors and capacitors and offers signifi-
cant space, cost and performance advantages
compared to traditional thick film components.
Features
■
Thin film RC network
■
Excellent stability and performance
■
Low parasitic inductance
■
Saves valuable real estate
■
Total components cost advantage
Available Pin Configurations
n
= Number of Pins (20)
See physical configurations on page E-13
for available pin/package configurations.
Applications
■
EMI/RFI filter
■
Low pass filter
■
High frequency/high speed applications
Electrical Characteristics
Resistance Range. . . . . .
10Ωto 10KΩ
Capacitance Range . . . .
10pF to 220pF
Resistance Tolerance . . .
±5%, ±10%, ±20%
Capacitance Tolerance. . .
±10%, ±20%
T.C.R. . . . . . . . . . . . . . .
250 ppm/°C
Operating
Temperature Range . . . .
-55°C to +125°C
Storage
Temperature Range . . . .
-65°C to +150°C
Power Rating
@ 70°C . . . . . . . . . . . . .
100mW per resistor
Circuit Schematic
n
2
n
2 + 1
n
1
E
Bolivar Drive, P.O. Box 547, Bradford, PA 16701 USA
■
814-362-5536
■
Fax: 814-362-8883
■
www.koaspeer.com
E-15
LFA Series
Physical Configurations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resistor/Capacitor
Body Style . . . . . . . . . . . . . . . . . . . . . Pin Count
Wide SOIC . . . . . . . . . . . . . . . . . 20
QSOP . . . . . . . . . . . . . . . . . . . . . 20
TSSOP . . . . . . . . . . . . . . . . . . . . 20
Die Pack * . . . . . . . . . . . . . . . . . . 20
Part Marking
Standard Resistance/Capacitance Values
Resistance . . . . Capacitance . . . . . . . . . . . . . . . . . .
(ohms) . . . . . . . . . . (pF) . . . . . . . . . . . . . . Code
10 . . . . . . . . . . 15. . . . . . . . . . 100/150
15 . . . . . . . . . . 47. . . . . . . . . . 150/470
27 . . . . . . . . . . 15. . . . . . . . . . 270/150
33 . . . . . . . . . . 47. . . . . . . . . . 330/470
33 . . . . . . . . . 100. . . . . . . . . . 330/101
47 . . . . . . . . . . 47. . . . . . . . . . 470/470
47 . . . . . . . . . 100. . . . . . . . . . 470/101
100 . . . . . . . . . 100. . . . . . . . . . 101/101
100 . . . . . . . . . 150. . . . . . . . . . 101/151
Mechanical Characteristics
Item. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Material
Substrate . . . . . . . . . . . . . . . . . . . . . . . Silicon
Resistor material. . . . . . . . . . . . . . . . TaN/NiCr
Dielectric . . . . . . . . . . . . Silicon dioxide/Nitride
9902
LFA T20
270M/150K
Body Style/
Pin Count
Resistance
Code
Date Code
Manufacturer's
Trademark
Pin 1 Indicator
(Molded Indent)
Model
LFA-
Tapped
Filter
20
See
above
table
B = 13"
Embossed
Plastic Tape
& Reel, see
Packaging
Section for
details
2 significant digits
+ the number of
zeros followed
by the tolerance
J=±5%
K = ±10%
M = ±20%
W= Wide
SOIC
Q = QSOP
T = TSSOP
6 = 0.6 mm
Die Pack
5 = 0.5 mm
Die Pack
4 = 0.4 mm
Die Pack
E
* See page J-6 for Die Pack specifications.
Ordering Information
LFA T 20 B 270M/150K
Circuit Body Number Packaging Resistance/
Type Style of Pins Capacitance Value
