Also Offering
RoHS Compliant
Equivalent Parts
Low-Voltage / High Q
Si Hyperabrupt Varactors
Features
MA4ST200 Series
V2
Absolute Maximum Ratings @ T
A
=+25 °C
(Unless Otherwise Noted)
1
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
•
•
•
•
•
•
•
Surface Mount Packages
(SOT-23, SOT-323, 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
Description
M/A-COM’s MA4ST200 series is a ion-implanted,
hyperabrupt junction, silicon tuning varactors in
SOT-23, SOT-323, 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
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
2.0
3.0
FREQUENCY (GHz)
Fig. 1 Typical Device Selection by Frequency
RoHS Compliant parts
Part Number
RoHS Compliant Base
Part Number
Configurations
MA4ST230
MA4ST240
MA4ST250
MAVR-000230
MAVR-000240
MAVR-000250
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
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
2
MA4ST200 Series
V2
C
T
RoHS Compliant
Part Number Base
1
(pF)
Capaci-
tance
Ratio
(pF)
f=1MHz,
V
R
=4.0V
C
T0.5
/C
T4.0
Q Factor
Part Number
Base
f=1 MHz, V
R
=2.0
f=50 MHz,
V
R
= 2.0V
Min.
MA4ST230
MA4ST240
MA4ST250
1
Nom.
5.0
3.5
2.7
Max.
6.0
4.2
3.5
Max.
3.1
2.3
1.8
Typ.
3.5
3.5
3.5
Min.
400
450
450
MAVR-000230-XXXXXX
MAVR-000240-XXXXXX
MAVR-000250-XXXXXX
4.5
3.0
2.3
The suffix defines package style, configuration and packaging information. Contact representative for complete part identification. Exam-
ple : The MA4ST250-1141T RoHS compliant version is MAVR-000250-11410T .
2
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
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
Low-Voltage / High Q
Si Hyperabrupt Varactors
Typical Performance Curves
MA4ST200 Series
V2
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.
Also Offering
RoHS Compliant
Equivalent Parts
Low-Voltage / High Q
Si Hyperabrupt Varactors
Case Styles
SOD-323
Case Style 1141
C
F
D
G
E
MA4ST200 Series
V2
INCHES
DIM.
A
B
C
D
E
F
G
H
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
MILLIMETERS
MIN.
⎯
⎯
⎯
0.25
0.08
1.6
1.15
2.3
MAX.
1.1
0.1
0.2
0.4
0.15
1.9
1.45
2.7
H
B
A
SC-70, 3 Lead
Case Style 1146
A
E
J
H
INCHES
DIM.
A
B
10
°
M A X .
MILLIMETERS
MAX.
0.087
0.053
0.094
0.057
0.016
0.039
0.004
0.007
0.010
MIN.
1.80
1.15
1.80
1.19
0.25
0.80
0.00
0.10
0.10
MAX.
2.20
1.35
2.40
1.45
0.41
1.00
0.10
0.18
0.25
MIN.
0.071
0.045
0.071
0.047
0.010
0.031
0.000
0.004
0.004
C
B
G
F
D
C
D
E
F
G
H
J
SC-79
Case Style 1279
Topview
Cathode
Mark
B
10
°
Max
Seating
Plane
F
E
DIM.
A
B
C
D
E
F
G
H
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
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
C
D
A
10
°
Max
G
H
0.043
1.09
4
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
Low-Voltage / High Q
Si Hyperabrupt Varactors
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.
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 SOT-323, 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
SOT-323 : 1146FT
As example, the RoHS P/N for the Base P/N
MA4VR-000230 in SOD-323 is :
MAVR-000230-1146FT.
MA4ST200 Series
V2
SC-79
0.020
0.50
0.020
0.50
0.053
1.35
Dimenstions: inches
mm
SOD-323
0.030
0.80
0.030
0.80
0.030
0.80
.090
2.2
Dimenstions: inches
mm
SOT-323
0.030
0.80
0.030
0.80
Please refer to Application Note M538 for surface
mounting instructions.
0.075
1.9
0.030
0.80
0.030
0.80
Dimenstions: inches
mm
5
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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