Ultra High Ratio
Si Hyperabrupt Varactor Diode
V 4.00
MA4ST2000 Series
Features
Ultra High Capacitance Ratio, C(0.1V)/C(4.7V) =
18:1, C(0.1V)/C(2.7V) = 12:1
n
Surface Mount Plastic Packages : SC-79, SOD-323,
SC-70, 3 Lead
n
SPC Process for Superior C vs V and Q vs V Repeatability
n
Ordering Information
Part Number
MA4ST2XXX-1279T
MA4ST2XXX-1141T
MA4ST2XXX-1146T
Configuration
Single
Single
Common Cathode
Package
SC-79
SOD-323
SC-70
3 Lead
Description
M/A-COM’s MA4ST2000 series is a highly repeatable,
UHCVD/ion-implanted, hyperabrupt silicon tuning varactor
in a cost effective surface mount package. This series of
varactors is designed for high capacitance ratio for low
battery voltage operation. It is efficient for wide band
tuning and low phase noise application where the supply
voltage is limited to 5 volts or less. Varactors in this series
have a typical 18:1 capacitance ratio between 0.1 V and
4.7 V and a 12:1 ratio between 0.1 V and 2.7 V. The
Varactors are offered as Singles in both SC-79 and SOD-323
configurations with Common Cathode version offered in a
SC-70, 3 Lead.
Absolute Maximum Ratings
@T
A
= +25 °C
Parameter
Reverse Voltage
Forward Current
Operating Temperature
Storage Temperature
Absolute Maximum
12 V
50 mA
-55 °C to +125 °C
-55 °C to +125 °C
Technical Parasitic Information
Package Type
SC-79
SOD-323
SC-70,
3 Lead
Package Cp
0.10
0.11
0.12
Package Ls
0.6
1.2
1.3
1
Ultra High Ratio Si Hyperabrupt Varactor Diode
Case Styles
SC-79 (SOD-523)
Case Style 1279
Topview
Cathode
Mark
B
10
°
Max
Seating
Plane
F
E
MA4ST2000 Series
V 4.00
DIM.
A
B
C
D
E
F
G
H
INCHES
MIN.
MAX.
0.020
0.003
0.006
0.010
0.059
0.043
0.011
0.037
0.028
0.008
0.010
0.014
0.067
0.051
0.012
0.043
MILLIMETERS
MIN.
MAX.
0.50
0.08
0.15
0.25
0.08
1.50
0.28
0.94
0.71
0.20
0.25
0.36
0.15
1.30
0.30
1.09
C
D
A
10
°
Max
G
H
SOD-323
Case Style 1141
C
F
D
G
E
DIM.
A
B
C
D
E
F
G
H
INCHES
MIN.
MAX.
0.010
0.003
0.063
0.045
0.091
0.043
0.004
0.008
0.016
0.006
0.075
0.057
0.106
MILLIMETERS
MIN.
MAX.
0.25
0.08
1.6
1.15
2.3
1.1
0.1
0.2
0.4
0.15
1.9
1.45
2.7
H
A
B
SC-70, 3 Lead
Case Style 1146
A
DIM.
E
J
H
INCHES
MIN.
MAX.
0.071
0.045
0.071
0.047
0.010
0.031
0.004
0.004
0.087
0.053
0.094
0.057
0.016
0.039
0.004
0.007
0.010
MILLIMETERS
MIN.
MAX.
1.80
1.15
1.80
1.19
0.25
0.80
0.10
0.10
2.20
1.35
2.40
1.45
0.41
1.00
0.10
0.18
0.25
2
10
°
M A X .
C
B
G
F
D
A
B
C
D
E
F
G
H
J
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s)
or information contained herein without notice. M/A-COM makes no warranty,
representation or guarantee regarding the suitability of its products for any
particular purpose, nor does M/A-COM assume any liability whatsoever arising out
of the use or application of any product(s) or information.
Visit www.macom.com for additional data sheets and product information.
n
North America:
Tel. (800) 366-2266
n
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Ultra High Ratio Si Hyperabrupt Varactor Diode
Electrical Characteristics @ T
A
= +25 °C
Breakdown Voltage @ I
R
= 10µA, V
b
= 12 V Minimum
Reverse Leakage Current @ V
R
=10V, I
R
= 10 nA Maximum
MA4ST2000 Series
V 4.00
Ct*
(pF)
Part Number
V
R
= 0.1 V
Typ.
MA4ST2200
MA4ST2300
MA4ST2400
MA4ST2500
MA4ST2600
7.68
34.2
60.3
86.4
113.3
Min.
3.66
16.2
28.6
41.4
54.3
V
R
= 1.0 V
Nom.
4.07
18.0
31.8
46.0
60.3
Max.
4.48
19.8
34.9
50.6
66.4
V
R
= 2.7 V
Typ.
0.70
2.67
4.98
6.68
9.14
V
R
= 4.7 V
Typ.
0.47
1.85
3.27
4.64
6.27
Capacitance Ratio
Rs**
(Ohm)
V
R
= 4.0 V
Typ.
3.84
0.95
0.67
0.61
0.54
Max.
4.6
1.2
0.9
0.8
0.7
Ct
0.1
/Ct
4.7
Typ.
16.3
18.5
18.4
18.6
18.1
Ct
0.1
/Ct
2.7
Typ.
11.0
12.8
12.1
12.9
12.4
* Capacitance @ 1 MHz
** Series Resistance @ 470 MHz
Typical Capacitance vs. Biasing Voltage
140
120
Capacitance (pF)
100
80
60
MA4ST2300
MA4ST2600
MA4ST2500
MA4ST2400
Typical Series Resistance vs. Biasing Voltage
7.0
Series Resistance (Ohm)
6.0
MA4ST2200
5.0
MA4ST2600
4.0
MA4ST2400
MA4ST2300
MA4ST2500
3.0
2.0
1.0
0.0
40
MA4ST2200
20
0
0
1
2
3
4
5
Biasing Voltage (V)
0
1
2
3
4
5
Biasing Voltage (V)
Typical Series Resistance vs. Frequency
8.0
MA4ST2200
Typical Capacitance Change vs. Temperature
0.08
7.0
Series Resistance (Ohm)
% of Capacitance Change
(relative to 25 C)
6.0
5.0
4.0
3.0
MA4ST2500
MA4ST2400
MA4ST2600
MA4ST2300
0.04
0
2.0
1.0
0.0
200
300
-0.04
-0.08
400
Frequency (MHz)
500
-40
-15
10
35
60
85
Temperature (degree C)
3
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s)
or information contained herein without notice. M/A-COM makes no warranty,
representation or guarantee regarding the suitability of its products for any
particular purpose, nor does M/A-COM assume any liability whatsoever arising out
of the use or application of any product(s) or information.
Visit www.macom.com for additional data sheets and product information.
n
North America:
Tel. (800) 366-2266
n
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Ultra High Ratio Si Hyperabrupt Varactor Diode
Typical Capacitance Values
V
R
(V)
0.1
0.3
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
MA4ST2200
Ct (pF)
7.643
6.746
5.948
4.006
1.895
0.985
0.744
0.638
0.579
0.543
0.517
0.469
MA4ST2300
Ct (pF)
34.06
30.07
26.56
18.00
8.313
3.941
2.889
2.429
2.166
1.993
1.845
1.771
MA4ST2400
Ct (pF)
60.26
53.12
46.81
31.75
15.52
7.470
5.407
4.512
4.000
3.663
3.370
3.200
MA4ST2000 Series
V 4.00
MA4ST2500
Ct (pF)
86.48
76.34
67.36
46.09
22.83
10.05
7.112
5.918
5.275
4.895
4.691
4.557
MA4ST2600
Ct (pF)
113.09
99.80
88.07
60.31
30.21
13.94
9.952
8.274
7.332
6.749
6.317
6.086
Spice Model
Part Number
N
CJO
(pF)
Vj
(V)
M
Rs
(Ω)
Rs
Intrinsic Diode Model
N=N
Cj0=Cj0
Vj=Vj
Fc=0.5
BV=43 V
M=M
Rs=Rs
Parasitic Cp & Ls
Are per Above Table
MA4ST2200
MA4ST2300
MA4ST2400
MA4ST2500
MA4ST2600
1.261
1.210
1.158
1.204
1.196
10.2
46.8
84.6
100
159
12.62
2.450
1.322
1.616
1.169
18.60
4.268
2.632
2.700
2.270
1.114
1.085
0.903
0.842
0.910
Cp
Cj
Ls
4
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s)
or information contained herein without notice. M/A-COM makes no warranty,
representation or guarantee regarding the suitability of its products for any
particular purpose, nor does M/A-COM assume any liability whatsoever arising out
of the use or application of any product(s) or information.
Visit www.macom.com for additional data sheets and product information.
n
North America:
Tel. (800) 366-2266
n
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
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