MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Features
Rev. V9
Package Styles
Low Series Resistance @ Low Tuning Voltages
High Capacitance Ratio @ Low Tuning Voltages
Surface Mount Plastic Packages:
SC-79, SOD-323, SC-70 (3L)
SPC Process for Superior C vs. V Repeatability
Lead-Free (RoHS Compliant) equivalents
available
SOD-323
SC-70 (3 lead)
Description
SC-79
The MA4ST1200 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, and high Q 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. The varactors are offered
as singles in SC-79, and SOD-323 along with a
common cathode version offered in the SC-70 (3L).
These diodes are offered with standard Sn/Pb
plating, as well as with 100% matte Sn plating on our
RoHS compliant equivalent devices.
Ordering Information
Part No.
RoHS Compliant Part No.
Configuration
Package
Package Cp
(pF)
Package Ls
(nH)
—
MAVR-001230-12790T
Single
SC-79
0.10
0.6
—
MAVR-001240-12790T
Single
SC-79
0.10
0.6
—
MA4ST1231-1141T
Single
SOD-323
0.11
1.2
—
MA4ST1241-1141T
Single
SOD-323
0.11
1.2
MA4ST1230CK-1146T
MA4ST1231CK-1146T
Common Cathode
SC-70 (3L)
0.12
1.3
MA4ST1240CK-1146T
MA4ST1241CK-1146T
Common Cathode
SC-70 (3L)
0.12
1.3
1
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MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Rev. V9
Electrical Specifications @ TA = +25°C
Breakdown Voltage @ IR = 10 A, Vb = 12 V Minimum
Reverse Leakage Current @ VR =10 V, IR = 100 nA Maximum
Capacitance
Ratio
RS (Ohm)
VR = 4.0 V CT0.5 / CT4.0
VR = 2.0 V
CT (pF)
RoHS Compliant
Part No.
Part No.
VR = 0.5 V
VR = 2.0 V
Typ.
Min.
Nom.
Max.
Typ.
Typ.
Typ.
Max.
MA4ST1230
MA4ST1231
MAVR-001230-XXXXX
10.1
4.2
4.7
5.6
2.75
3.67
0.40
0.70
MA4ST1240
MA4ST1241
MAVR-001240-XXXXX
7.1
3.0
3.4
3.8
2.05
3.46
0.40
0.70
1. The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.
2. Capacitance @ 1 MHz.
3. Series Resistance @ 100 MHz. guaranteed by design.
Absolute Maximum Ratings4,5
Parameter
Absolute Maximum
Reverse Voltage
12 V
Forward Current
50 mA
Operating Temperature
-55 °C to +125 °C
Storage Temperature
-55 °C to +125 °C
4. Operation of this device above any one of these parameters
may cause permanent damage.
5. Please refer to application note M538 for surface mounting
instructions.
Spice Model
Rs
Intrinsic Diode Model
N=N
Cj0=Cj0
Vj=Vj
Fc=0.5
BV=20 V
M=M
Parasitic Cp & Ls
Are per Above Table
Cp
Typical Capacitance Values
VR (V)
Cj
CT (pF)
MA4ST1230
MA4ST1240
0.5
10.170
7.016
1.0
7.839
5.424
1.5
6.062
4.213
2.0
4.840
3.370
2.5
4.053
3.0
Ls
Part Number
N
Cj0
(pF)
Vj
(V)
M
2.829
MA4ST1230
1.1
12.7
3.136
2.6
3.527
2.466
MA4ST1240
1.1
8.65
3.170
2.6
3.5
3.155
2.208
4.0
2.877
2.016
4.5
2.661
1.865
5.0
2.488
1.746
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Rev. V9
Typical Performance Curves
Capacitance vs. Biasing Voltage
Series Resistance vs. Biasing Voltage
1.0
12
MA4ST1230 / 1231, MAVR-001230
Series Resistance (Ohm)
Capacitance (pF)
10
MA4ST1240 / 1241, MAVR-001240
8
6
4
2
0
0
1
2
3
4
5
MA4ST1230 / 1231, MAVR-001230
0.8
MA4ST1240 / 1241, MAVR-001240
0.6
0.4
0.2
0.0
0.0
0.5
1.0
1.5
2.0
2.5
Biasing Voltage (V)
Biasing Voltage (V)
Capacitance Change (relative to +25°C) vs. Temperature
Capacitance Change (%)
4
2
0
-2
-4
-40
-15
10
35
60
85
Temperature (°C)
3
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3.0
MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Rev. V9
Case Styles
SOD-323 (Case Style 1141)
INCHES
MIN.
MAX.
¾
0.043
¾
0.004
¾
0.008
0.010
0.016
0.003
0.006
0.063
0.075
0.045
0.057
0.091
0.106
MILLIMETERS
MIN.
MAX.
¾
1.1
¾
0.1
¾
0.2
0.25
0.41
0.07
0.15
1.6
1.9
1.14
1.45
2.3
2.7
INCHES
MIN.
MAX.
MILLIMETERS
MIN.
MAX.
A
0.071
0.087
1.80
2.21
B
C
0.045
0.071
0.053
0.094
1.14
1.80
1.35
2.39
D
E
0.047
0.010
0.057
0.016
1.19
0.25
1.45
0.41
F
G
0.031
0.000
0.039
0.004
0.79
0.00
1.00
0.10
H
J
0.004
0.004
0.007
0.010
0.10
0.10
0.18
0.25
DIM.
C
F
E
D
G
H
B
A
A
B
C
D
E
F
G
H
SC-70, 3 Lead (Case Style 1146)
DIM.
A
H
E
J
10 M A X .
C
B
G
F
D
SC-79 (Case Style 1279)
DIM.
INCHES
MILLIMETERS
MIN.
MAX.
MIN.
MAX.
A
.0197
.0276
0.50
0.70
B
0.003
0.008
0.07
0.20
C
0.006
0.010
0.15
0.25
D
0.010
0.014
0.25
0.35
E
0.059
0.067
1.50
1.70
F
0.043
0.051
1.09
1.30
G
H
I
.0098 nominal
.0433 nominal
.027
.035
0.250 nominal
1.10 nominal
0.68
0.89
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Rev. V9
Mounting Information
The illustration indicates the recommended mounting pad configuration for the SC-79, SOT-323 and SOD-323
packages. Solder paste containing flux should be screened onto the pads to a thickness of 0.005- 0.007 inches.
The plastic package is placed in position, firmly adhering to the solder paste.
Permanent attachment is performed by a reflow soldering procedure during which the tab temperature does not
exceed +275°C and the body temperature does not exceed +250°C, for standard models and +260°C for the
RoHS compliant devices.
Please refer to Application Note M538 for surface mounting instructions.
SC-70, 3 Lead (Case Style 1146)
SOD-323 (Case Style 1141)
0.030
0.80
0.030
0.80
0.030
0.80
0.030
0.80
0.030
0.80
0.075
1.9
0.030
0.80
.090
2.2
0.030
0.80
Dimenstions: inches
mm
Dimenstions: inches
mm
SC-79 (Case Style 1279)
0.020
0.50
0.020
0.50
0.053
1.35
Dimenstions: inches
mm
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
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For further information and support please visit:
https://www.macom.com/support
MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Rev. V9
M/A-COM Technology Solutions Inc. All rights reserved.
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6
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
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For further information and support please visit:
https://www.macom.com/support