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KV1835E
FEATURES
s Very Small URD Surface Mount Package
s Very Low Operating Voltage (1 to 4 V)
s Large Capacitance Ratio (A = 2.8 minimum)
s Excellent Linearity (CV Curve)
s Very Small Capacitance Deviation at Tape/Reel
s Very Low Series Resistance
VARIABLE CAPACITANCE DIODE
APPLICATIONS
s Communications Equipment
s Multi-Channel Cordless Telephone
s Voltage Controlled Oscillator
s UHF Wireless Communication Systems
DESCRIPTION
The KV1835E is a variable capacitance diode designed for
UHF applications.
The KV1835E is available in a very small URD Surface
Mount Package.
CLASSIFICATION
RANK
C
1
MIN 11.8
C
2 MAX 12.6
2
12.3
13.3
(Unit: pF)
3
13.0
13.8
Note: Rank is determined after testing and marked on the
reel. All the diodes on a reel have the same rank, but rank
can not be specified when ordering.
ORDERING INFORMATION
KV1835E
Tape/Reel Code
KV1835E
TAPE/REEL CODE
TR: Tape Right
August 1999 TOKO, Inc.
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KV1835E
ABSOLUTE MAXIMUM RATINGS
Reverse Voltage ....................................................... 28 V
Forward Current .................................................... 10 mA
Power Dissipation ................................................ 50 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-55 to +85 °C
ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C
SYMBOL
PARAMETER
TEST CONDITIONS
MIN TYP
VREV
Reverse Voltage
IREV = 10 µA
20
IREV Reverse Current
VREV = 16 V
C0.5
Diode Capacitance 0.5
VREV = 0.5 V, f = 1 MHz
36.5
C2
Diode Capacitance 2
VREV = 2 V, f = 1 MHz
11.8
RS Series Resistance
VREV = 1.5 V, f = 100 MHz
A Capacitance Ratio
C0.5 / C2
2.8
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.
MAX UNITS
V
5.0 nA
42.5 pF
13.8 pF
0.6
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August 1999 TOKO, Inc.

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TYPICAL PERFORMANCE CHARACTERISTICS
KV1835E
CAPACITANCE vs.
REVERSE VOLTAGE
100
TA = 25 °C
f = 1 MHz
10
1
0123
VREV (V)
1000
QUALITY FACTOR vs.
REVERSE VOLTAGE
f = 50 MHz
100
100 MHz
300 MHz
470 MHz
10
0123
VREV (V)
C (TA) vs. TEMPERATURE
C (25 °C)
1.10
TA = 85 °C
1.06
55 °C
1.02 25 °C
0.98 -15 °C
0.94 -55 °C
0.90
0
12
VREV (V)
3
August 1999 TOKO, Inc.
REVERSE CURRENT vs.
REVERSE VOLTAGE
1
TA = 85 °C
0.1 TA = 55 °C
TA = 25 °C
0.01
0.001
0 4 8 12 16 20
VREV (V)
SERIES RESISTANCE vs.
FREQUENCY
1.0
VREV = 2 V
TA = 25 °C
0.1
50 100
300
f (MHz)
1000
CAPACITANCE TEMPERATURE
COEFFICIENT vs. REVERSE VOLTAGE
10000
TA = -55 °C to +85 °C
f = 1 MHz
1000
300
100
0
12
VREV (V)
3
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KV1835E
URD
Marking
Cathode Mark
PACKAGE OUTLINE
2.3
0.8
Recommended Mount Pad
1.7
Marking Information
Product Code
J
0.2 min
+ 0.3
2.5
0.3
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.
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© 1999 Toko, Inc.
All Rights Reserved
IC-xxx-KV11835E
0798O0.0K
August 1999 TOKO, Inc.
Printed in the USA