
KV1350NT
VARIABLE CAPACITANCE DIODE
FEATURES
■ Very Low Operating Voltage
■ Excellent Linearity (CV Curve)
■ Large Capacitance Ratio (A = 4.6 minimum)
■ Two Diodes in a 3 Lead Through-Hole Discrete
Package (TO92-3)
■ Very Small Capacitance Deviation at Tape/Reel
DESCRIPTION
The KV1350NT variable capacitance diode was specially
made to be used as tuning elements in car radios, radio
cassettes, stereos, and other consumer radios. The
KV1350NT is suitable for wide band tuning from 76 to 108
MHz.
If the KV1350NT is used only for FM reception, it is
possible to operate it at 4.5 V so it is very useful in lowering
the power demands of the set.
APPLICATIONS
■ FM Radio
■ Voltage Controlled Oscillator
CLASSIFICATION
RANK
C
MIN 59.15 60.30 61.50 62.75 64.00
C
1
MAX 60.90 62.10 63.35 64.65 65.90
12345
(Unit: pF)
ORDERING INFORMATION
KV1350NT
Note: The KV1350NT is supplied on folded paper tape (25 pieces per fold) 1500
pcs per box.
KV1350NT
150
12 3
July 1999 TOKO, Inc. Page 1

KV1350NT
ABSOLUTE MAXIMUM RATINGS
Reverse Voltage........................................................ 18V
Forward Current .................................................... 50 mA
Power Dissipation .............................................. 100 mW
ELECTRICAL CHARACTERISTICS
Test conditions: T
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
= 25 °C
A
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-55 to +85 °C
V
I
C
C
C
REV
REV
1
6
9
Reverse Voltage I
Reverse Current V
Diode Capacitance 1 V
Diode Capacitance 6 V
Diode Capacitance 9 V
Q Quality Factor V
A Capacitance Ratio C
Note 1: Diode Capacitance measured with HP 4279A or equivalent instruments (at OSC level 20 mVrms, ± 5 mVrms).
Note 2: Series Resistance measured with HP 4191A or equivalent instruments.
= 10 µA16V
REV
= 10.0 V 100 nA
REV
= 1.0 V, f = 1 MHz 59.15 62.50 65.90 pF
REV
= 6.0 V, f = 1 MHz 17.67 23.54 pF
REV
= 9.0 V, f = 1 MHz 10.77 13.26 pF
REV
= 3.0 V, f = 100 MHz 60
REV
/ C
1
9
4.6
Page 2 July 1999 TOKO, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS
KV1350NT
CAPACITANCE vs.
100
30
CAPACITANCE (pF)
10
1000
Q
100
REVERSE VOLTAGE
0 1 2 3 4 5 6 7 8 9
V
(V)
REV
QUALITY FACTOR vs.
REVERSE VOLTAGE
TA = 25 °C
f = 50 MHz
100 MHz
TA = 25 °C
f = 1 MHz
70 MHz
REVERSE CURRENT vs.
REVERSE VOLTAGE
1 n
TA = 85 °C
100 p
(A)
10 p
REV
I
1 p
100 f
0 2 4 6 8 10 12 14 16
0.8
0.6
(Ω)
S
R
TA = 55 °C
TA = 25 °C
V
(V)
REV
SERIES RESISTANCE vs.
FREQUENCY
V
= 3 V
REV
TA = 25 °C
0.4
50 100 300 500
f (MHz)
TEMPERATURE COEFFICIENT
1000
(ppm/ C)
A
300
∆C /∆ T
100
vs. REVERSE VOLTAGE
TA = -55 °C to +85 °C
f = 1 MHz
0 1 2 3 4 5 6 7 8 9
V
(V)
REV
)
A
C (T
10
0 1 2 3 4 5 6 7 8 9
V
(V)
REV
C (TA)
C (25 °C)
1.05
1.04
1.03
1.02
1.01
1.00
C (25 C)
0.99
0.98
0.97
0.96
0.95
0 1 2 3 4 5 6 7 8 9
vs. REVERSE VOLTAGE
TA = +85 °C
+55 °C
+25 °C
-15 °C
-55 °C
V
(V)
REV
f = 1 MHz
July 1999 TOKO, Inc. Page 3

KV1350NT
PACKAGE OUTLINE
T092-3
1.0
0.5
(18.0 )
0.5
(9.0 )
Mark
Lot No.
0.15
0.46
0.5
0.25
123
R2.3
Marking Information
3.6
4.6
1.3
AAA
0.5
0.5
4.6
3.0
16.0
0.46
0.15
0.5
YYY
e eM
2.5
2.5
Product Code 35 0
Tape
Dimensions are shown in millimeters
Tolerance: x.x = ± 0.2 mm (unless otherwise specified)
Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: (847) 297-0070 Fax: (847) 699-7864
TOKO AMERICA REGIONAL OFFICES
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
Western Regional Office
Toko America, Inc.
2480 North First Street , Suite 260
San Jose, CA 95131
Tel: (408) 432-8281
Fax: (408) 943-9790
Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: (203) 748-6871
Fax: (203) 797-1223
Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
Tel: (719) 528-2200
Fax: (719) 528-2375
Visit our Internet site at http://www.tokoam.com
The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its
products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of
third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.
Page 4 July 1999 TOKO, Inc.
© 1999 Toko, Inc.
All Rights Reserved
IC-xxx-KV1471E
0798O0.0K
Printed in the USA