MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Features
•
•
•
•
•
•
Low Cost
Very High Capacitance Ratio from 1 to 8 Volts
Surface Mount Package
High Quality Factor
Useful for Battery Applications
SPC Monitored Ion Implantation for Excellent C-
V Repeatability
•
Singles and Common Cathode Pairs
•
Available in Tape and Reel
•
Lead-Free (RoHs Compliant) equivalents avail-
able with 260°C reflow compatibility
SOT-23
Absolute Maximum Ratings
1,2
@ T
A
=+25 °C (Unless Otherwise Noted)
Parameter
Reverse Voltage
Forward Current
Power Dissipation
Operating Temperature
Storage Temperature
Description
The MA4ST079 through MA4ST083 series of silicon
hyperabrupt junction tuning varactors is produced
with ion implantation and advanced epitaxial growth
techniques. These diodes have thermal oxide pas-
sivation, and feature very high capacitance ratio and
quality factor. They are well suited for use from the
sub-HF through UHF frequency range. The standard
capacitance tolerance is ±10%, with tighter toler-
ances available. Capacitance matching at one or
more bias voltages is also available.These diodes
are offered with standard Sn/Pb plating , as well as
100% matte Sn plating on our RoHs compliant
equivalent devices.
Absolute Maximum
12 V
50 mA
50mW @25°C
-65 °C to +125 °C
-65 °C to +125 °C
1. Operation of this device above any one of these parameters
may cause permanent damage.
2. Please refer to application note M538 for surface mounting
instructions
Configurations
Applications
The MA4ST079 through MA4ST083 series of hy-
perabrupt junction tuning varactors is suggested for
usage where a large frequency change is required
with only a small change in tuning voltage. This se-
ries is appropriate for usage in wide band voltage-
controlled oscillators and voltage controlled filters
which require the largest rate of change of capaci-
tance with voltage. The large change in capacitance
from 1 to 8 volts makes them very attractive for bat-
tery operated or other systems with limited available
control voltage. The MA4ST079 through MA4ST083
family can be used in VCOs and VTFs from approxi-
mately 100 KHz through the UHF frequency band.
Ordering Information
Part Number
MA4ST079
MA4ST080
MA4ST081
MA4ST082
MA4ST083
RoHs Compliant Part Number
3
MAVR-000079-XXXXXX
MAVR-000080-XXXXXX
MAVR-000081-XXXXXX
MAVR-000082-XXXXXX
MAVR-000083-XXXXXX
1
Specifications are subject to change without prior
3. Suffix refers to package style , configuration and packaging
requirements. See electrical specification for complete
part number offerings
notification
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Electrical Specifications @ T
A
= +25 °C
Breakdown Voltage @ I
R
= 10
µ
A, V
b
= 12 V Minimum
Reverse Leakage Current @ V
R
=10V, I
R
= 100 nA Maximum
Temperature Coefficient of Capacitance @V
R
=8 Volts, TCC=400ppm/°C Typical
Ct (pF)
2
Part Number
Base
1
RoHS Compliant
Part No. Base
1
Typ.
Capacitance
Ratio
Ct
1V
/Ct
8V
V
R
= 8 V
f = 1 MHz
Max.
11.8
5.5
5.5
2.4
2.4
1.8
1.8
1.3
1.3
V
R
= 1V/8V
f = 1 MHz
Typ.
9.1
8.9
8.9
8.5
8.5
8.2
8.2
7.8
7.8
Typical Q
V
R
= 1 V
f = 1 MHz
Min.
V
R
= 2.5 V
f = 1 MHz
Min.
48.7
22.3
22.3
9.1
9.1
6.6
6.6
4.5
4.5
Max.
59.5
27.3
27.3
11.1
11.1
8.0
8.0
5.5
5.5
V
R
= 4 V
f = 1 MHz
Max
27.3
13.1
13.1
5.2
5.2
3.8
3.8
2.6
2.6
V
R
= 4 V
f = 50 MHz
Typ.
80
150
150
300
300
350
350
450
450
MA4ST079CK-287T
MA4ST080-287T
MA4ST080CK-287T
MA4ST081-287T
MA4ST081CK-287T
MA4ST082-287T
MA4ST082CK-287T
MA4ST083-287T
MA4ST083CK-287T
MAVR-000079-0287FT
MAVR-000080-0287AT
MAVR-000080-0287FT
MAVR-000081-0287AT
MAVR-000081-0287FT
MAVR-000082-0287AT
-
MAVR-000083-0287AT
MAVR-000083-0287FT
87.4
40.0
40.0
16.2
16.2
11.5
11.5
7.9
7.9
Typical Performance Curves
3
Total Capacitance vs. Reverse Voltage
Nominal vs. Reverse Voltage
1.
2.
3.
2
The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.
Capacitance @ 1 MHz
Performance curves also reflect that of the RoHs equivalent part
Specifications are subject to change without prior notification
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Case Styles
SOT-23 (Case Style 287)
F
D
A
N
SOT-23 (Case Style 287)
DIM.
A
B
C
D
E
F
G
H
J
K
L
INCHES
MIN.
MAX.
0.048
⎯
0.008
⎯
0.040
⎯
0.013
0.020
0.003
0.006
0.110
0.119
0.047
0.056
0.037 typical
0.075 typical
0.103
⎯
⎯
0.024
10° max.
2° . . .30°
MILLIMETERS
MIN.
MAX.
1.22
⎯
0.20
⎯
1.00
⎯
0.35
0.50
0.08
0.15
2.80
3.00
1.20
1.40
0.95 typical
1.90 typical
2.60
⎯
⎯
0.60
M
G
B
K
L
H
J
C
E
DIM.
GRADIENT
Mounting Information
The illustration indicates the recommended
mounting
pad
configuration
for
the
SOT-23 package. 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.
M
N
SOT-23
.030 min.
0.80
.035 min.
0.90
.037
0.95
0.75
1.9
.090
2.2
Dimenstions: inches
mm
3
Specifications are subject to change without prior notification
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
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