MA4ST400 Series
Surface Mount Hyperabrupt Varactors
Rev. V5
Features
•
•
•
•
•
•
•
•
Surface Mount Packages
High Quality Factor
Capacitance Ratio to 9.5:1
Tape and Reel Packaging Available
SPC Monitored Ion Implantation for Excellent
C-V Repeatability
Singles and Common Cathode Pairs
Lead-Free (RoHS Compliant) Equivalents
Available with 260 °C Reflow Compatibility
Configurations
Common Cathode
Single
Description
M/A-COM’s MA4ST400 series are ion-implanted,
hyperabrupt junction, silicon tuning varactors in the
SOT-23 surface mount package. These thermal
oxide passivated diodes feature high capacitance
ratio and quality factor. They are well suited for
octave bandwidth tuning in the HF to UHF frequency
bands. The standard capacitance tolerance is ±
10%, with tighter tolerances available. Capacitance
matching at one or more bias voltages is also
available. These diodes are offered with standard
Sn/Pb plating, as well as with 100% matte Sn plating
on our RoHS compliant devices.
RoHS Compliant Parts
3
Part Number
MA4ST401-287T
MA4ST403-287T
MA4ST404-287T
MA4ST405-287T
MA4ST406-287T
MA4ST407-287T
MA4ST408-287T
MA4ST409-287T
RoHs Compliant
Part Number
MAVR-000401-0287AT
MAVR-000403-0287AT
MAVR-000404-0287AT
MAVR-000405-0287AT
MAVR-000406-0287AT
MAVR-000407-0287AT
MAVR-000408-0287AT
MAVR-000409-0287AT
MAVR-000401-0287FT
MAVR-000403-0287FT
MAVR-000404-0287FT
MAVR-000405-0287FT
MAVR-000406-0287FT
MAVR-000407-0287FT
MAVR-000408-0287FT
MAVR-000409-0287FT
Configura-
tion
Single
Single
Single
Single
Single
Single
Single
Single
Common
Cathode
Common
Cathode
Common
Cathode
Common
Cathode
Common
Cathode
Common
Cathode
Common
Cathode
Common
Cathode
Applications
The MA4ST400 series tuning varactors are useful
for octave bandwidth tuning applications in the HF
through UHF ranges. Applications include VCOs and
voltage tuned filters in radios, cable TV tuners and
test instruments where low cost and excellent lot-to-
lot repeatability are critical. Linear tuning
performance is available from 3 to 8 volts.
MA4ST401CK-287T
MA4ST403CK-287T
MA4ST404CK-287T
MA4ST405CK-287T
MA4ST406CK-287T
MA4ST407CK-287T
MA4ST408CK-287T
MA4ST409CK-287T
Absolute Maximum Ratings
@ T
A
=+25 °C (Unless Otherwise Noted)
Parameter
Reverse Voltage
Forward Current
Total Power Dissipation
Operating Temperature
Storage Temperature
1,2
Absolute Maximum
22V
50 mA
250 mW
-55 °C to +125 °C
-55 °C to +125 °C
1
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
3. Suffix refers to package style, configuration and packaging
requirements. Other packages and configurations may be
available upon request.
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype 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 Technology
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST400 Series
Surface Mount Hyperabrupt Varactors
Rev. V5
Electrical Specifications @ T
A
= +25 °C
Breakdown Voltage @ I
R
= 10
µ
A, V
b
= 30 V Minimum
Reverse Leakage Current @ V
R
=20V, I
R
= 100 nA Maximum
C
T 2
Part Number
Base
1
RoHS Compliant
Part No. Base
1
(pF)
f = 1 MHz, V
R
= 4.0 V
Min.
MA4ST401-287T
MA4ST403-287T
MA4ST404-287T
MA4ST405-287T
MA4ST406-287T
MA4ST407-287T
MA4ST408-287T
MA4ST409-287T
MA4ST401CK-287T
MA4ST403CK-287T
MA4ST404CK-287T
MA4ST405CK-287T
MA4ST406CK-287T
MA4ST407CK-287T
MA4ST408CK-287T
MA4ST409CK-287T
MAVR-000401-0287AT
MAVR-000403-0287AT
MAVR-000404-0287AT
MAVR-000405-0287AT
MAVR-000406-0287AT
MAVR-000407-0287AT
MAVR-000408-0287AT
MAVR-000409-0287AT
MAVR-000401-0287FT
MAVR-000403-0287FT
MAVR-000404-0287FT
MAVR-000405-0287FT
MAVR-000406-0287FT
MAVR-000407-0287FT
MAVR-000408-0287FT
MAVR-000409-0287FT
9.0
13.5
16.2
19.8
24.3
29.7
35.1
42.3
9.0
13.5
16.2
19.8
24.3
29.7
35.1
42.3
Capacitance
Ratio
CT2.0/CT20
Typ.
6
7
7
7.5
8
9
9.5
9.5
6
7
7
7.5
8
9
9.5
9.5
Q Factor
f = 50 MHz
V
R
= 4.0 V
Min.
250
250
175
175
150
150
150
150
250
250
175
175
150
150
150
150
Nom.
10.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
10.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
Max.
11.0
16.5
19.8
24.2
29.7
36.3
42.9
51.7
11.0
16.5
19.8
24.2
29.7
36.3
42.9
51.7
1.
2.
The suffix defines package style, configuration and packaging information. Contact representative for complete part identification.
Capacitance specification is per diode
Specifications are subject to change without prior notification
2
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype 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 Technology
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST400 Series
Surface Mount Hyperabrupt Varactors
Rev. V5
Typical Performance Curves
100
MA4ST400 Series Hyperabrupt Varactor
MA4ST401
Capacitance (pF)
MA4ST403
MA4ST404
MA4ST405
10
MA4ST406
MA4ST407
MA4ST408
MA4ST409
1
1
10
Reverse Voltage (V)
100
Tabulated Capacitance Data
Bias (V) MA4ST401 MA4ST403 MA4ST404 MA4ST405 MA4ST406 MA4ST407 MA4ST408 MA4ST409
0
1
2
3
4
5
6
8
10
12
15
20
22
30.37
20.86
16.19
12.83
9.99
7.59
5.80
3.76
2.86
2.41
2.03
1.68
1.60
47.05
32.12
24.72
19.33
14.74
10.90
8.08
4.96
3.76
3.17
2.66
2.21
2.09
59.64
40.43
30.89
24.00
18.35
13.95
10.94
7.61
6.00
5.12
4.33
3.60
3.39
69.45
47.47
36.55
28.57
21.73
15.95
11.73
7.11
5.37
4.53
3.81
3.18
3.11
86.29
58.98
45.41
35.50
27.00
19.82
14.57
8.83
6.67
5.63
4.73
3.95
3.86
105.60
72.34
55.93
44.02
33.85
25.13
18.64
11.37
8.45
7.05
5.87
4.81
4.53
124.52
85.20
65.82
51.83
39.95
29.86
22.36
13.80
10.23
8.50
7.05
5.76
5.42
150.59
103.10
79.70
62.79
48.45
36.27
27.26
17.11
12.73
10.58
8.79
7.17
6.75
Specifications are subject to change without prior notification
3
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype 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 Technology
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST400 Series
Surface Mount Hyperabrupt Varactors
Rev. V5
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
SOT-23 (Case Style 287)
F
D
A
N
SOT-23 (Case Style 287)
INCHES
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
⎯
MIN.
MAX.
M
G
B
K
L
H
J
C
E
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.
M
N
GRADIENT
10° max.
2° . . .30°
Specifications are subject to change without prior notification
4
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype 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 Technology
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
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