Also Offering
RoHs Compliant
Equivalent Parts
Low-Voltage / Wide Band
Si Hyperabrupt Varactors
Features
MA4ST300 Series
V4
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 Capacitance Ratio at Low Voltages
High Q 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 Applica-
tions
Description
The MA4ST300 series are ion-implanted, hy-
perabrupt junction, silicon tuning varactors in SOT-
23, SOT-323, and SOD-323 surface mount pack-
ages. This series of varactors is designed for high
capacitance ratio and low voltage operation. Each
varactor type has a better than 3:1 capacitance ratio
between 0.5V and 3.0V.
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
Applications
The MA4ST300 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 to cover wireless application bands up to the
2.4 GHz WLAN band. Applications include VCOs
and voltage tuned filters.
320
330
340
350
Active Pagers
CT2
SMR
PDC
GSM
IS-136/95
NMT
JCT
NMT
TACS
AMPS
PCS
GPS
DCS1800
PHP
DECT
WLAN
RoHs Compliant parts
0.25
Part Number
RoHs Compliant Part Number
0.5
0.75
1.0
2.0
3.0
FREQUENCY (GHz)
MA4ST320
MA4ST330
MA4ST340
MA4ST350
MAVR-000320
MAVR-000330
MAVR-000340
MAVR-000350
Fig. 1 Typical Device Selection by Frequency
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 / Wide Band
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
MA4ST300 Series
V4
C
T
RoHs Compliant
Part Number Base
1
(pF)
Capaci-
tance
Ratio
(pF)
f=1MHz,
V
R
=3.0V
C
T0.5
/C
T3.0
Q Factor
Part Number
Base
f=1 MHz, V
R
=0.5V
f=50 MHz,
V
R
= 2.0V
Min.
MA4ST320
MA4ST330
MA4ST340
MA4ST350
1
2
Nom.
58.0
26.0
18.5
11.8
Max.
63.0
30.0
21.0
13.5
Max.
19.0
9.0
6.5
4.5
Typ.
3.2
3.2
3.2
3.2
Min.
300
350
350
400
MAVR-000320-XXXXXX
MAVR-000330-XXXXXX
MAVR-000340-XXXXXX
MAVR-000350-XXXXXX
48.0
22.0
15.0
9.5
The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.
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= 1.4 nH
Ls
Part No.
MA4ST320
MA4ST330
MA4ST340
MA4ST350
CJ0 (pF)
77.4
33.9
25.3
15.7
VJ (V)
11.71
8.91
14.25
14.55
M
6.51
5.15
7.41
7.26
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 / Wide Band
Si Hyperabrupt Varactors
Typical Performance Curves
Total Capacitance vs. Reverse Voltage at 1 MHz
100
MA4ST320
MA4ST300 Series
V4
Nominal Q at 50 MHz vs. Reverse Voltage
1000
MA4ST330
Total Capacitance (pF)
MA
4ST340
MA4ST340
10
MA4ST350
Nominal Q
MA
4ST350
MA
4ST330
MA
4ST320
1
0.1
1
Reverse Voltage (V)
10
100
0.1
1
Reverse Voltage (V)
10
Nominal Change in Capacitance with temperature
900
700
TCC(PPM/°C)
500
300
100
0
1
2
3
4
5
6
Reverse Voltage (V)
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 / Wide Band
Si Hyperabrupt Varactors
Case Styles
SOD-323
Case Style 1141
C
F
D
G
E
MA4ST300 Series
V4
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 / Wide Band
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.
Please refer to Application Note M538 for surface
mounting instructions.
MA4ST300 Series
V4
SC-79
0.020
0.50
0.020
0.50
0.053
1.35
Dimenstions: inches
mm
SOT-323
0.030
0.80
0.030
0.80
SOD-323
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
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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