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Surface Mount Abrupt Tuning Varactors
Features
q q q q q q
MA45430 Series
V3.00
SOT-23
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 25C
Parameter Absolute Maximum 30 V 50 mA
1
Mounting Information
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. Permanent attachment is performed by a reflow soldering procedure. The tab temperature must not exceed 275C and the body temperature must not exceed 250C.
Specifications Subject to Change Without Notice.
Reverse Voltage Forward Current Total Power Dissipation
250 mW -55C to +150C -55C to +150C
Junction Operating Temperature Storage Temperature
Note: 1. At 25C case temperature. Derate linearly to 0 mW at 150C.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 3 3263 8761 Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020
Surface Mount Abrupt Tuning Varactors Electrical Specifications @ 25C
Minimum Breakdown Voltage (VB) = 30 Volts at 10A Maximum Reverse Current (IR) = 100 nA at 24 Volts Lower capacitance values available upon request
Minimum Capacitance Ratio CT0/CT30 4.5 4.5 4.5 4.5 4.5 4.6 4.6 4.7 4.7 4.7 VR = 0/30 V f = 1 MHz
MA45430 Series
V3.00
Typical Performance Curve
CAPACITANCE vs REVERSE VOLTAGE
MA46H070-MA46H073 100 Total Capacitance (pF)
Model Number MA45436 MA45437 MA45438 MA45439 MA45440 MA45441 MA45444* MA45445* MA45446* MA45448* Test Conditions
Total Capacitance CT4 10% (pF) 4.7 5.6 6.8 8.2 10.0 12.0 22.0 27.0 33.0 47.0 VR = 4 V f = 1 MHz
Minimum Q 1800 1700 1600 1500 1300 1200 1000 900 750 400 VR = 4 V f = 50 MHz
MA45448 MA45446
10
MA45444 MA45440 MA45438 MA45436
1 0.1
1
10
100
Reverse Voltage (Volts) Capacitance vs. Reverse Voltage
* Available as single diodes only.
INCHES DIM. A B C D E F G H J K L DIM. MIN. -- -- -- 0.013 0.003 0.110 0.047 MAX. 0.048 0.008 0.040 0.020 0.006 0.119 0.056
MILLIMETERS MIN. -- -- -- 0.35 0.08 2.80 1.20 MAX. 1.22 0.20 1.00 0.50 0.15 3.00 1.40
Case Style SOT-23 (High Profile)
0.037 typical 0.075 typical 0.103 0.024 GRADIENT 10 max.1 2...30
0.95 typical 1.90 typical 2.60 0.60
DIMENSIONS MILLIMETERS (INCHES)
M N
Note: 1. Applicable on all sides
Specifications Subject to Change Without Notice.
2
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
M/A-COM, Inc.
Asia/Pacific: Tel. +81 3 3263 8761 Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020

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