Surface Mount Abrupt Tuning Varactors MA45430 Series V3.00 SOT-23 Features ● ● ● ● ● ● 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