MACOM MA45448 Surface mount abrupt tuning varactor Datasheet

Surface Mount
Abrupt Tuning Varactors
MA45430 Series
V3.00
SOT-23
Features
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Surface Mount Package
Low Cost
High Quality Factor
Tape and Reel Packaging Available
SPC Controlled Process for Superior C-V Repeatability
Available as Singles and Common Cathode Pairs
Description
The MA45430 series are abrupt 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 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.
Configurations
TOP VIEW
Applications
The MA45430 series tuning varactor is useful for 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.
Ordering Information
The part numbers shown are for single diodes. When
ordering diodes in common cathode pairs add suffix
“CK.” For example, MA45436CK specifies model number
MA45436 as a common cathode pair. To order parts on
tape and reel add suffix T/R to the end of the part number. i.e. MA45436CK - T/R.
(SINGLE)
(COMMON CATHODE PAIR)
Absolute Maximum Ratings at 25°C
Parameter
Mounting Information
Reverse Voltage
The diagram below 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 inches. The SOT-23 device is
placed in position, firmly adhering to the solder paste.
Forward Current
Permanent attachment is performed by a reflow soldering
procedure. The tab temperature must not exceed 275°C
and the body temperature must not exceed 250°C.
Absolute Maximum
30 V
50 mA
Total Power Dissipation
250 mW
1
Junction Operating Temperature
-55°C to +150°C
Storage Temperature
-55°C to +150°C
Note:
1. At 25°C case temperature. Derate linearly to 0 mW at 150°C.
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
1
Tel. (800) 366-2266
Fax (800) 618-8883
■
Asia/Pacific: Tel. +81 3 3263 8761
Fax +81 3 3263 8769
■
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
Surface Mount Abrupt Tuning Varactors
MA45430 Series
V3.00
Typical Performance Curve
Electrical Specifications @ 25°C
Minimum Breakdown Voltage (VB) = 30 Volts at 10µA
Maximum Reverse Current (IR) = 100 nA at 24 Volts
Lower capacitance values available upon request
CAPACITANCE vs REVERSE VOLTAGE
MA46H070–MA46H073
Model
Number
Total
Capacitance
CT4 ± 10%
(pF)
Minimum
Capacitance Ratio
CT0/CT30
Minimum
Q
MA45436
4.7
4.5
1800
MA45437
5.6
4.5
1700
MA45438
6.8
4.5
1600
MA45439
8.2
4.5
1500
MA45440
10.0
4.5
1300
MA45441
12.0
4.6
1200
MA45444*
22.0
4.6
1000
MA45445*
27.0
4.7
900
MA45446*
33.0
4.7
750
MA45448*
47.0
4.7
400
Test
Conditions
VR = 4 V
f = 1 MHz
VR = 0/30 V
f = 1 MHz
VR = 4 V
f = 50 MHz
Total Capacitance (pF)
100
MA45448
MA45446
MA45444
10
MA45440
MA45438
MA45436
1
0.1
1
10
Reverse Voltage (Volts)
Capacitance vs. Reverse Voltage
* Available as single diodes only.
INCHES
Case Style
SOT-23 (High Profile)
DIMENSIONS MILLIMETERS (INCHES)
100
MILLIMETERS
DIM.
MIN.
MAX.
MIN.
MAX.
A
—
0.048
—
1.22
B
—
0.008
—
0.20
C
—
0.040
—
1.00
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
0.103
2.60
L
0.024
0.60
DIM.
GRADIENT
M
10° max.1
N
2°…30º
Note:
1. Applicable on all sides
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
2
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
■
Asia/Pacific: Tel. +81 3 3263 8761
Fax +81 3 3263 8769
■
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
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