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 100% matte Sn plating.
SC-79
Ordering Information
Part No.
MAVR-001230-12790T
MAVR-001240-12790T
MA4ST1231-1141T
MA4ST1241-1141T
MA4ST1241CK-1146T
Configuration
Single
Single
Single
Single
Common Cathode
Package
SC-79
SC-79
SOD-323
SOD-323
SC-70 (3L)
Package Cp
(pF)
0.10
0.10
0.11
0.11
0.12
Package Ls
(nH)
0.6
0.6
1.2
1.2
1.3
* Restrictions on Hazardous Substances, European Union Directive 2011/65/EU.
1
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for additional data sheets and product information.
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MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Electrical Specifications @ T
A
= +25°C
Breakdown Voltage @ I
R
= 10
A, V
b
= 12 V Minimum
Reverse Leakage Current @ V
R
=10 V, I
R
= 100 nA Maximum
C
T
(pF)
RoHS Compliant
Part No.
MA4ST1231
MAVR-001230
MA4ST1241
MAVR-001240
V
R
= 0.5 V
Typ.
10.1
7.1
Min.
4.2
3.0
V
R
= 2.0 V
Nom.
4.7
3.4
Max.
5.6
3.8
V
R
= 4.0 V
Typ.
2.75
2.05
Capacitance Ratio
C
T
0.5 / C
T
4.0
Typ.
3.67
3.46
R
S
(Ohm)
V
R
= 2.0 V
Typ.
0.40
0.40
Max.
0.70
0.70
Rev. V10
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 Ratings
4,5
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
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
Spice Model
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.
Cp
Typical Capacitance Values
V
R
(V)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2
C
T
(pF)
MA4ST1231
10.170
7.839
6.062
4.840
4.053
3.527
3.155
2.877
2.661
2.488
MA4ST1241
7.016
5.424
4.213
3.370
2.829
2.466
2.208
2.016
1.865
1.746
Cj
Ls
Part Number
MA4ST1231
MAVR-001230
MA4ST1241
MAVR-001240
N
1.1
1.1
Cj0
(pF)
12.7
8.65
Vj
(V)
3.136
3.170
M
2.6
2.6
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.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
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MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Typical Performance Curves
Capacitance vs. Biasing Voltage
12
Rev. V10
Series Resistance vs. Biasing Voltage
1.0
Series Resistance (Ohm)
10
MA4ST1231, MAVR-001230
MA4ST1241, MAVR-001240
0.8
MA4ST1231, MAVR-001230
MA4ST1241, MAVR-001240
Capacitance (pF)
8
6
4
2
0
0.6
0.4
0.2
0
1
2
3
4
5
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Biasing Voltage (V)
Biasing Voltage (V)
Capacitance Change (relative to +25°C) vs. Temperature
4
Capacitance Change (%)
2
0
-2
-4
-40
-15
10
35
60
85
Temperature (°C)
3
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for additional data sheets and product information.
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MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
Case Styles
SOD-323 (Case Style 1141)
C
F
D
G
E
Rev. V10
DIM.
A
B
C
D
E
F
G
H
H
A
B
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
SC-70, 3 Lead (Case Style 1146)
DIM.
A
E
J
H
INCHES
MIN.
MAX.
0.071
0.045
0.071
0.047
0.010
0.031
0.000
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
1.14
1.80
1.19
0.25
0.79
0.00
0.10
0.10
2.21
1.35
2.39
1.45
0.41
1.00
0.10
0.18
0.25
A
B
C
10
M A X .
C
B
G
D
E
F
G
H
J
F
D
SC-79 (Case Style 1279)
DIM.
A
B
C
D
E
F
G
H
I
4
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for additional data sheets and product information.
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INCHES
MIN.
.0197
0.003
0.006
0.010
0.059
0.043
MAX.
.0276
0.008
0.010
0.014
0.067
0.051
MILLIMETERS
MIN.
0.50
0.07
0.15
0.25
1.50
1.09
MAX.
0.70
0.20
0.25
0.35
1.70
1.30
.0098 nominal
.0433 nominal
.027
.035
0.250 nominal
1.10 nominal
0.68
0.89
MA4ST1200 Series
Low Tuning Voltage / Low Rs Silicon Hyperabrupt
Varactor Diode
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.
Rev. V10
SOD-323 (Case Style 1141)
0.030
0.80
0.030
0.80
SC-70, 3 Lead (Case Style 1146)
0.030
0.80
0.030
0.80
0.075
1.9
0.030
0.80
0.030
0.80
0.030
0.80
.090
2.2
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.
Visit
www.macom.com
for additional data sheets and product information.
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