MA4ST200 Series
Low-Voltage / High Q Si Hyperabrupt Varactors
Features
•
Surface Mount Packages
(SOT-23, SC70 3LD, SOD-323)
•
High Q at Low Voltages
•
High Capacitance Ratio at Low Voltages
•
SPC Process for Superior C-V Repeatability
•
Available as Single and Common Cathode Pairs
Tape and Reel Packaging
•
Designed for Commercial Wireless Applications
•
Lead-Free (RoHS Compliant) equivalents avail-
able with 260°C reflow compatibility
M/A-COM Products
Rev. V3
Absolute Maximum Ratings
1,2
@ T
A
=+25 °C (Unless Otherwise Noted)
Parameter
Reverse Voltage
Forward Current
Total Power Dissipation
Operating Temperature
Storage Temperature
Absolute Maximum
12 V
50 mA
250 mW
-55 °C to +125 °C
-55 °C to +125 °C
Description
M/A-COM’s MA4ST200 series is a ion-implanted,
hyperabrupt junction, silicon tuning varactors in
SOT-23, SC70 3LD, and SOD- 323 surface mount
packages. This series of varactors is designed for
high Q and low voltage operation. Each varactor
type has a Q greater than 400 at -2 V. These diodes
are offered with standard Sn/Pb plating , as well as
100% matte Sn plating on our RoHS compliant
equivalent devices.
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
Typical Device Selection by Frequency
320
330
340
350
Active Pagers
CT2
SMR
PDC
GSM
IS-136/95
NMT
JCT
NMT
TACS
AMPS
Applications
The MA4ST200 series tuning varactors are useful
for wide band tuning and low phase noise applica-
tions where the supply voltage is limited to 5 volts or
less. These varactors have been specifically de-
signed for use in the wireless communications up to
the 2.4 GHz band. Applications include VCOs and
voltage tuned filters.
PCS
GPS
DCS1800
PHP
DECT
WLAN
0.25
0.5
0.75
1.0
FREQUENCY (GHz)
2.0
3.0
Configurations
RoHS Compliant Parts
Part Number
MA4ST230
MA4ST240
MA4ST250
RoHS Compliant Base
Part Number
MAVR-000230
MAVR-000240
MAVR-000250
1
ADVANCED:
Data Sheets contain information regarding a product M/A-COM is considering for
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
development. Performance is based on target specifications, simulated results, and/or prototype
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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 has under develop-
Visit www.macom.com for additional data sheets and product information.
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
volume is not guaranteed.
information contained herein without notice.
MA4ST200 Series
Low-Voltage / High Q Si Hyperabrupt 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
C
T 4
(pF)
f = 1 MHz, V
R
= 2.0 V
Min.
MA4ST230
MA4ST240
MA4ST250
MAVR-000230-XXXXXX
MAVR-000240-XXXXXX
MAVR-000250-XXXXXX
4.5
3.0
2.3
M/A-COM Products
Rev. V3
Capacitance
Ratio
(pF)
f = 1 MHz
V
R
= 4.0 V
Max.
3.1
2.3
1.8
Q Factor
Part Number
Base
RoHS Compliant
Part Number Base
3
C
T0.5
/C
T4.0
Typ.
3.5
3.5
3.5
f = 50 MHz
V
R
= 2.0 V
Min.
400
450
450
Nom.
5.0
3.5
2.7
Max.
6.0
4.2
3.5
3. The suffix defines package style, configuration and packaging information. Contact representative for complete part identification.
Example : The MA4ST250-1141T RoHS compliant version is MAVR-000250-11410T .
4. Capacitance @ 1 MHz
Spice Model
Intrinsic Diode
Model:
N = 1.1
CJ0=(see table below)
VJ = (see table below)
FC = 0.5
BV = 12.0 V
M = (see table below)
Rs
Cp
Package
Parasitics
Cj
Parasitics:
Cp= 0.15 pF
Ls= 0.1 nH
Ls
Part No.
MA4ST230
MA4ST240
MA4ST250
RoHS Compliant Base Part
No.
MAVR-000230
MAVR-000240
MAVR-000250
CJ0 (pF)
12.0
8.16
6.19
VJ (V)
4.085
4.930
4.774
M
2.228
2.520
2.458
2
ADVANCED:
Data Sheets contain information regarding a product M/A-COM is considering for
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
development. Performance is based on target specifications, simulated results, and/or prototype
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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 has under develop-
Visit www.macom.com for additional data sheets and product information.
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
volume is not guaranteed.
information contained herein without notice.
MA4ST200 Series
Low-Voltage / High Q Si Hyperabrupt Varactors
Typical Performance Curves
M/A-COM Products
Rev. V3
3
ADVANCED:
Data Sheets contain information regarding a product M/A-COM is considering for
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
development. Performance is based on target specifications, simulated results, and/or prototype
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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 has under develop-
Visit www.macom.com for additional data sheets and product information.
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
volume is not guaranteed.
information contained herein without notice.
MA4ST200 Series
Low-Voltage / High Q Si Hyperabrupt Varactors
Case Styles
SOD-323 (Case Style 1141)
C
F
D
G
E
M/A-COM Products
Rev. V3
INCHES
DIM.
A
B
C
D
E
F
G
H
MILLIMETERS
MIN.
⎯
⎯
⎯
0.25
0.08
1.6
1.15
2.3
MIN.
⎯
⎯
⎯
0.010
0.003
0.063
0.045
0.091
MAX.
0.043
0.004
0.008
0.016
0.006
0.075
0.057
0.106
MAX.
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
E
J
H
DIM.
A
B
C
D
E
G
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
1.15
1.80
1.19
0.25
0.80
0.00
0.10
0.10
2.20
1.35
2.40
1.45
0.41
1.00
0.10
0.18
0.25
10
°
M A X .
C
B
F
G
H
J
F
D
SC-79 (Case Style 1279)
Topview
Cathode
Mark
B
10
°
Max
Seating
Plane
F
E
DIM.
A
B
C
D
E
F
G
H
10
°
Max
INCHES
MIN.
MAX.
0.020
0.003
0.006
0.010
0.059
0.043
0.011
0.037
typical
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
G
H
4
ADVANCED:
Data Sheets contain information regarding a product M/A-COM is considering for
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
development. Performance is based on target specifications, simulated results, and/or prototype
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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 has under develop-
Visit www.macom.com for additional data sheets and product information.
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
volume is not guaranteed.
information contained herein without notice.
MA4ST200 Series
Low-Voltage / High Q Si Hyperabrupt Varactors
Mounting Information
The illustration indicates the recommended
mounting pad configuration for the SC-79, SC70
3LD 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.
These varactors are available in the three case
styles shown. When ordering, specify the desired
case style by adding the case designation (287 for
SOT-23, 1146 for SC70 3LD, 1141 for SOD-323) as
a suffix to the model number. For example,
MA4ST230-1141 specifies the MA4ST230 varactor
in the SOD-323 package. The model number
indicated is for a single varactor. Common cathode
pairs are available in SOT-23 package, and are
specified by adding “CK” to the end of the model
number. For example MA4ST230CK-287 specifies
the MA4ST230 varactor in common cathode pairs.
For RoHS Compliant Parts, use the Following
Suffices for the Given Package Style
( After the Base P/N ) :
SC-79 : 12790T
SOD-323 : 11410T
SC70 3LD : 1146FT
As example, the RoHS P/N for the Base P/N
MA4VR-000230 in SOD-323 is :
MAVR-000230-1146FT.
M/A-COM Products
Rev. V3
SC-79 (Case Style 1279)
0.020
0.50
0.020
0.50
0.053
1.35
Dimenstions: inches
mm
SOD-323 (Case Style 1141)
0.030
0.80
0.030
0.80
0.030
0.80
.090
2.2
Dimenstions: inches
mm
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
Dimenstions: inches
mm
Please refer to Application Note M538 for surface
mounting instructions.
5
ADVANCED:
Data Sheets contain information regarding a product M/A-COM is considering for
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
development. Performance is based on target specifications, simulated results, and/or prototype
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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 has under develop-
Visit www.macom.com for additional data sheets and product information.
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
volume is not guaranteed.
information contained herein without notice.
