Also Offering
RoHs Compliant
Equivalent Parts
Surface Mount Hyperabrupt
Wide-Band Tuning Varactors
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
MA4ST079 thru
MA4ST083 Series V4
SOT-23
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 passivation, and feature
very high capacitance ratio and quality factor. They are
well suited for use from the sub-HF through UHF fre-
quency range. The standard capacitance tolerance is
±10%, with tighter tolerances available. Capacitance
matching at one or more bias voltages is also avail-
able.These diodes are offered with standard Sn/Pb plat-
ing , as well as 100% matte Sn plating on our RoHs com-
pliant equivalent devices.
Absolute Maximum Ratings @ T
A
=+25 °C
(Unless Otherwise Noted)
1
Parameter
Reverse Voltage
Forward Current
Power Dissipation
Operating Temperature
Storage Temperature
Absolute Maximum
12 V
50 mA
50mW @25°C
-65 °C to +125 °C
-65 °C to +125 °C
Applications
The MA4ST079 through MA4ST083 series of hyperabrupt
junction tuning varactors is suggested for usage where a
large frequency change is required with only a small
change in tuning voltage. This series is appropriate for
usage in wide band voltagecontrolled oscillators and volt-
age controlled filters which require the largest rate of
change of capacitance with voltage. The large change in
capacitance from 1 to 8 volts makes them very attractive
for battery operated or other systems with limited available
Part Number
MA4ST079
MA4ST080
MA4ST081
MA4ST082
MA4ST083
1
1. Operation of this device above any one of these parameters
may cause permanent damage.
Configurations
RoHs Compliant Part Number
1
MAVR-000079-XXXXXX
MAVR-000080-XXXXXX
MAVR-000081-XXXXXX
MAVR-000082-XXXXXX
MAVR-000083-XXXXXX
Suffix refers to package style , configuration and packaging require-
ments. Contact representative for complete part number information.
1
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.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
Also Offering
RoHs Compliant
Equivalent Parts
Surface Mount Hyperabrupt
Wide-Band Tuning Varactors
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
RoHs Compliant
Part Number Base
1
V
R
= 1.0V
f=1MHz
Min.
MA4ST079
MA4ST080
MA4ST081
MA4ST082
MA4ST083
1
2
MA4ST079 thru
MA4ST083 Series V4
Typical
Capacitance
Ratio
Vr=1V/Vr=8V
f=1MHz
Typ.
9.1
8.9
8.5
8.2
7.8
Typical
Q
Vr=4V
F=50MHz
Typ.
80
150
300
350
450
V
R
= 2.5V
f=1MHz
Min
48.7
22.3
9.1
6.6
4.5
Max
59.5
27.3
11.1
8.0
5.5
V
R
= 4.0V V
R
= 8.0V
f=1MHz f=1MHz
Max
27.3
13.1
5.2
3.8
2.6
Max
11.8
5.5
2.4
1.8
1.3
MAVR-000079-XXXXXX
MAVR-000080-XXXXXX
MAVR-000081-XXXXXX
MAVR-000082-XXXXXX
MAVR-000083-XXXXXX
87.4
40.0
16.2
11.5
7.9
The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.
Capacitance @ 1 MHz
Typical Performance Curves
Note : Performance curves also reflect that of the RoHs equivalent part
2
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.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
Also Offering
RoHs Compliant
Equivalent Parts
Surface Mount Hyperabrupt
Wide-Band Tuning Varactors
Case Styles
SOT-23
Case Style 287
F
D
A
N
MA4ST079 thru
MA4ST083 Series V4
SOT-23 (Case Style 287)
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
⎯
DIM.
A
B
C
D
E
F
G
H
J
K
L
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.
M
N
GRADIENT
10° max.
1
2° . . .30°
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.
SOT-23
.030 min.
0.80
.035 min.
0.90
.037
0.95
0.75
1.9
.090
2.2
Dimenstions: inches
mm
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.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
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