1
Low-Voltage / High Q Si Hyperabrupt Varactors
Rev. V5
MA4ST200 Series
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
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.
Commitment to produce in volume is not guaranteed.
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 Application s
• 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, 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.
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.
Absolute Maximum Ratings1,2
@ TA=+25 °C (Unless Otherwise Noted)
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
Parameter Absolute Maximum
Reverse Voltage 12 V
Forward Current 50 mA
Operating Temperature -55 °C to +125 °C
Storage Temperature -55 °C to +125 °C
Total Power Dissipation 250 mW
Part Number RoHS Compliant Base
Part Number
MA4ST230 MAVR-000230
MA4ST240 MAVR-000240
MA4ST250 MAVR-000250
0.25 0.5 0.75 1.0 2.0 3.0
350
FREQUENCY (GHz)
J
CT
NMT
AMPS
TACS
NMT
IS-136/95
GSM
PDC
CT2
Active Pagers
DECT
PHP
DCS1800
WLAN
GPS
PCS
SMR
340 330 320
Typical Device Selection by Frequency
Configurations
RoHS Compliant Parts
Specifications are subject to change without prior notification
2
Low-Voltage / High Q Si Hyperabrupt Varactors
Rev. V5
MA4ST200 Series
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
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.
Commitment to produce in volume is not guaranteed.
Electrical Specifications @ TA = +25 °C
Breakdown Voltage @ IR = 10
μ
A, Vb = 12 V Minimum
Reverse Leakage Current @ VR =10V, IR = 100 nA Maximum
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
Part No. RoHS Compliant Base Part
No. CJ0 (pF) VJ (V) M
MA4ST230 MAVR-000230 12.0 4.085 2.228
MA4ST240 MAVR-000240 8.16 4.930 2.520
MA4ST250 MAVR-000250 6.19 4.774 2.458
Part Number
Base RoHS Compliant
Part Number Base 3
Capacitance
Ratio Q Factor
(pF) (pF)
f = 1 MHz, VR = 2.0 V f = 1 MHz
VR = 4.0 V CT0.5/CT4.0 f = 50 MHz
VR = 2.0 V
Min. Nom. Max. Max. Typ. Min.
MA4ST230 MAVR-000230-XXXXXX 4.5 5.0 6.0 3.1 3.5 400
MA4ST240 MAVR-000240-XXXXXX 3.0 3.5 4.2 2.3 3.5 450
MA4ST250 MAVR-000250-XXXXXX 2.3 2.7 3.5 1.8 3.5 450
CT 4
Ls
Cp Cj
Rs
Package
Parasitics Parasitics:
Cp= 0.15 pF
Ls= 0.1 nH
Intrinsic Diode
Model:
N = 1.1
CJ0=(see table below)
VJ = (see table below)
FC = 0.5
BV = 12.0 V
M = (see tabl e below)
Spice Model
Specifications are subject to change without prior notification
3
Low-Voltage / High Q Si Hyperabrupt Varactors
Rev. V5
MA4ST200 Series
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
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.
Commitment to produce in volume is not guaranteed.
Typical Performance Curves
Specifications are subject to change without prior notification
4
Low-Voltage / High Q Si Hyperabrupt Varactors
Rev. V5
MA4ST200 Series
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
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.
Commitment to produce in volume is not guaranteed.
Case Styles
SC-70, 3 Lead (Case Style 1146)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.071 0.087 1.80 2.21
B 0.045 0.053 1.14 1.35
C 0.071 0.094 1.80 2.39
D 0.047 0.057 1.19 1.45
E 0.010 0.016 0.25 0.41
F 0.031 0.039 0.79 1.00
G 0.000 0.004 0.00 0.10
H 0.004 0.10
J 0.004 0.10
0.007
0.010 0.18
0.25
SOD-323 (Case Style 1141)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A ⎯ 0.043 ⎯ 1.1
B ⎯ 0.004 ⎯ 0.1
C ⎯ 0.008 ⎯ 0.2
D 0.010 0.016 0.25 0.41
E 0.003 0.006 0.07 0.15
F 0.063 0.075 1.6 1.9
G 0.045 0.057 1.14 1.45
H 0.091 0.106 2.3 2.7
F
D
H
G
CE
A
B
A
E
D
J
H
G
F
10°MAX.
CB
Specifications subject to change without prior notification
SC-79 (Case Style 1279)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A .0197 .0276 0.50 0.70
B 0.003 0.008 0.07 0.20
C 0.006 0.010 0.15 0.25
D 0.010 0.014 0.25 0.35
E 0.059 0.067 1.50 1.70
F 0.043 0.051 1.09 1.30
G .0098 nominal 0.250 nominal
H .0433 nominal
I .027 .035 0.68 0.89
1.10 nominal
5
Low-Voltage / High Q Si Hyperabrupt Varactors
Rev. V5
MA4ST200 Series
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
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.
Commitment to produce in volume is not guaranteed.
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 cath ode 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 MAVR-
000230 in SOD-323 is :
MAVR-000230-1146FT.
Please refer to Application Note M538 for surface
mounting instructions.
SC-70, 3 Lead (Case Style 1146)
0.030
0.80
0.030
0.80
0.030
0.80
0.075
1.9
0.030
0.80
inches
mm
Dimenstions:
SOD-323 (Case Style 1141)
0.030
0.80
.090
2.2
0.030
0.80
inches
mm
Dimenstions:
0.030
0.80
SC-79 (Case Style 1279)
0.020
0.50
0.053
1.35 inches
mm
Dimenstions:
0.020
0.50
Specifications are subject to change without prior notification
