August 1999 TOKO, Inc.
Page 1
KV1851E
VARIABLE CAPACITANCE DIODE
FEATURES
s
Very Small URD Surface Mount Package
s
Very Low Series Resistance
s
Large Capacitance Ratio (A = 3.9 minimum)
s
Excellent Linearity (CV Curve)
s
Very Small Capacitance Deviation at Tape/Reel
APPLICATIONS
s
UHF Communications Equipment
s
Voltage Controlled Oscillator
s
900 MHz Communications Systems
ORDERING INFORMATION
TAPE/REEL CODE
TR: Tape Right
Tape/Reel Code
KV1851E
KV1851E
RANK
C
1
2
3
C
1
MIN
25.00
26.50
28.10
MAX
26.90
28.50
30.00
CLASSIFICATION
(Unit: pF)
DESCRIPTION
The KV1851E is a variable capacitance diode designed for
UHF applications.
The KV1851E is available in a very small URD Surface
Mount Package.
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.
Page 2
August 1999 TOKO, Inc.
KV1851E
ELECTRICAL CHARACTERISTICS
Test conditions: T
A
= 25
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.
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
REV
Reverse Voltage
I
REV
= 10 A
16
V
I
REV
Reverse Current
V
REV
= 10 V
5.00
nA
C
1
Diode Capacitance 1
V
REV
= 1 V, f = 1 MHz
25.00
30.00
pF
C
4
Diode Capacitance 4
V
REV
= 4 V, f = 1 MHz
4.90
7.00
pF
R
S
Series Resistance
V
REV
= 4 V, f = 100 MHz
1.7
A
Capacitance Ratio
C
1
/ C
4
3.90
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................... -55 to +85
C
Reverse Voltage ....................................................... 18 V
Forward Current .................................................... 10 mA
Power Dissipation ................................................ 50 mW
Page 4
August 1999 TOKO, Inc.
KV1851E
Recommended Mount Pad
1.7
0.2 min
0.3
0.9
0 ~ 0.1
0.8
2.3
0.8
1.25
2.5
0.13
+0.15
-0.05
+ 0.3
Dimensions are shown in millimeters
Tolerance: x.x =
0.2 mm (unless otherwise specified)
Marking
Cathode Mark
Marking Information
Product Code
E
URD
PACKAGE OUTLINE
Printed in the USA
1999 Toko, Inc.
All Rights Reserved
TOKO AMERICA REGIONAL OFFICES
Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 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
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: (203) 748-6871
Fax: (203) 797-1223
IC-xxx-KV1845E
0798O0.0K
Visit our Internet site at http://www.tokoam.com
Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
Tel: (719) 528-2200
Fax: (719) 528-2375
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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