M A COM MA4ST408, MA4ST407, MA4ST406, MA4ST405, MA4ST404 Datasheet
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Surface Mount Hyperabrupt Varactors MA4ST300 Series
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MA4ST400 Series
Surface Mount
H
erabrupt Varactors
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
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 bi as voltages is
also available.
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.
SOT-233
Configurations
TOP VIEW
Single Double
Ordering Information
The model number indicated is for a single varactor. When
ordering diodes in common cathode pairs add suffix “CK.” For
example, MA4ST401CK specifies model number MA4ST401 in
common cathode pairs. To order parts on tape and reel add suffix
“T” to the end of the part number. i.e., MA4ST401CK-T.
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
Absolute Maximum Rating @ 25°C
Parameter Absolute Maximum
Reverse Voltage 22 Volts
Forward Current 50 mA
Total Power Dissipation
Junction Operating Temp. -55°C to +125°C
Storage Temperature -55°C to +125°C
1. At 25°C case temperature. Derate linearly to zero at 150°C.
1
250 mW
Surface Mount Hyperabrupt Varactors MA4ST300 Series
Typical Performance Curves
NOMINAL CHANGE in CAPACITANCE with
TEMPERATURE
400
350
300
250
TCC (PPM/C)
200
150
0 2 4 6 8 10 12 14 16 18 20
REVERSE VOLTAGE (Volts)
Electrical Specifications @ TA = +25°C
Minimum Breakdown Voltage (VB) = 22 Volts at 10 µA,
Maximum Reverse (I
Model
Number
MA4ST401 10 pF 6.0 250
MA4ST402 12 pF 6.5 250
MA4ST403 15 pF 7.0 250
MA4ST404 18 pF 7.0 175
MA4ST405 22 pF 7.5 175
MA4ST406 27 pF 8.0 150
MA4ST407 33 pF 9.0 150
MA4ST408 39 pF 9.5 150
MA4ST409 47 pF 9.5 150
Test F = 1 MHz F = 1 MHz F = 50 MHz
Conditions V
Capacitance
) = 100 nA at 20 Volts
R
Total
± 10%
C
T4
= 4 Volts VR = 4 Volts
R
Minimum
Capacitance
Ratio CT2/C
T20
Maximum
Q
TOTAL CAPACITANCE (pF) vs REVERSE
VOLTAGE
100
10
TOTAL CAPACITANCE (pF)
1
1 10 100
REVERSE VOLTAGE (Volts)
MA 4ST409
MA 4ST407
MA 4ST405
MA 4ST403
MA 4ST401
Case Styles
SOT-23
Case Style 287
F
D
G
L
H
J
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
A
M
C
N
B
K
E
SOT-23 (Case Style 287)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A
B
C
D 0.013 0.020 0.35 0.50
E 0.003 0.006 0.08 0.15
F 0.110 0.119 2.80 3.00
G 0.047 0.056 1.20 1.40
H 0.037 typical 0.95 typical
J 0.075 typical 1.90 typical
K
L
DIM. GRADIENT
M
N
10° max.
2° . . . 30°
0.048
0.008
0.040
0.103
0.024
1
1.22
0.20
1.00
2.60
0.60
Note:
1. Applicable on all sides.
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