The KV1851K is a variable capacitance diode designed for
UHF applications.
The KV1851K is available in a very small UFD Surface
Mount Package.
CLASSIFICATION
RANK
C
MIN
C
1
MAX
1
25.00
26.90
2
26.50
28.50
(Unit: pF)
3
28.10
30.00
KV1851K
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
KV1851K
Tape/Reel Code
TAPE/REEL CODE
TR: Tape Right
August 1999 TOKO, Inc.
Page 1
KV1851K
ABSOLUTE MAXIMUM RATINGS
Reverse Voltage ....................................................... 18 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: T
A
= 25
°C
SYMBOL
V
REV
I
REV
C
1
C
4
R
S
A
PARAMETER
Reverse Voltage
Reverse Current
Diode Capacitance 1
Diode Capacitance 4
Series Resistance
Capacitance Ratio
TEST CONDITIONS
I
REV
= 10 µA
V
REV
= 10 V
V
REV
= 1 V, f = 1 MHz
V
REV
= 4 V, f = 1 MHz
V
REV
= 4 V, f = 100 MHz
C
1
/ C
4
3.90
25.00
4.90
MIN
16
5.00
30.00
7.00
1.7
TYP
MAX
UNITS
V
nA
pF
pF
Ω
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.
Page 2
August 1999 TOKO, Inc.
KV1851K
TYPICAL PERFOMANCE CHARACTERISTICS
CAPACITANCE vs.
REVERSE VOLTAGE
100
TA = +25
°C
f = 1 MHz
1000
QUALITY FACTOR vs.
REVERSE VOLTAGE
TA = +25
°C
f = 50 MHz
100 MHz
CAPACITANCE (pF)
10
Q
100
1
0
1
2
3
4
5
6
7
8
9 10
VREV (V)
10
0
1
2
3
4
5
6
7
8
9 10
VREV (V)
SERIES RESISTANCE
vs. FREQUENCY
10
VREV = 5 V
TA = +25
°C
REVERSE CURRENT vs.
REVERSE VOLTAGE
10
TA = +85°C
1
+55°C
IREV (nA)
RS (Ω)
1
0.1
+25°C
0.01
0.1
10
100
FREQUENCY (MHz)
C (TA)
1000
0.001
0
2
4
6
8
10
12 14 16
VREV (V)
1.08
1.06
1.04
C (25
°C)
vs. REVERSE VOLTAGE
TEMPERATURE COEFFICIENT
vs. REVERSE VOLTAGE
1000
TA = -55
°C
to +85
°C
f = 1 MHz
TA = +85
°C
+55
°C
+25
°C
f = 1 MHz
C (25 C)
C (TA)
1.02
1.00
0.98
0.96
0.94
0.92
0
∆C
/∆ TA (ppm/ C)
5
6
7
8
9 10
-15
°C
-55
°C
1
2 3
4
VREV (V)
300
100
0
1
2
3
4
5
6
7
8
9 10
VREV (V)
August 1999 TOKO, Inc.
Page 3
KV1851K
PACKAGE OUTLINE
Marking Information
Product Code
1.7
Cathode Orientation Marking
Marking
0.8
UFD
E
+ 0.1
0.8
0.6
1.2
1.6
+ 0.1
+ 0.1
0.3
+ 0.05
Recommended Mount Pad
+ 0.1
Dimensions are shown in millimeters
Tolerance: x.x =
±
0.2 mm (unless otherwise specified)
0.11
+0.10
-0.05
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.
Thanks to Eyou Yunhu Congbai for providing the link, I found the corresponding development information.The link address is: https://www.eeworld.com.cn/huodong/GigaDevice_GD32L233_202112/index.html#3
S...
I have been browsing the forum for a long time. So far, I have only found a guy who used RT to load NES games to 2440. This thing is the most powerful. It is very powerful to play with it. So far, I s...
My graduation project is to do environmental monitoring of art galleries. I use HM-1 to measure indoor humidity based on the single-chip C51. I don't know how to program it. Please help~~...
I received the CH579M-R1 development board on Sunday. I also received the Southchip SC8905 evaluation board. I was delayed for a few days to install the TTF to USB driver. I started to build the CH579...
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
This week, Microsoft held its 2012 Microsoft Worldwide Partner Conference (WPC) in Toronto, Canada. At the conference, Microsoft showed its new products and services to partners around the world. A...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Introduction
As the country increases its efforts to control the atmospheric environment, motorcycle emission regulations will become stricter year by year, and motorcycles that do not meet the...[Details]
Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he ...[Details]
Against the backdrop of global warming, energy conservation and emission reduction have become a global hotspot and focus, which has also sounded the clarion call for the take-off of the LED lighti...[Details]
1. The composition and structure of mobile phone lithium battery
Mobile phone lithium batteries are mainly composed of plastic shell upper and lower covers, lithium battery cells, protection c...[Details]
1 Introduction
At present, people have higher and higher requirements for the quality of life. When people are busy with work, soymilk machine is a new type of household beverage machine. It uses so...[Details]
1 Introduction
Washing machines are an indispensable household appliance in the home, and they are developing very fast. Fully automatic washing machines are favored by everyone because of their con...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
