SOT-23 Abrupt Tuning Varactors MA45430 Series Features @ Surface Mount Package @ Low Cost @ High Quality Factor @ Tape and Reel Packaging Available e@ SPC Controlled Process for Superior C-V Repeatability e Available as Singles and Common Cathode Pairs Configuration Top View I [ Ub U (Single) LE Ld (Common Cathode Pair) 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 suit- ed for tuning in the HF to UHF frequency bands. The standard capac- itance tolerance is +10%, with tighter tolerances available. Capacitance matching at one or more bias voltages is also available. Applications The MA45430 series tuning varactor is useful for tuning applications in the HF through UHF ranges. Applications include VCOs and volt- age tuned filters in radios, cable TV tuners and test instruments where low cost and exceilent lot-to-lot repeatability are critical. M/A-COM, Inc. a 43 South Ave, Burlington, MA 01803 a 800-366-2266 137 SOT-23 Abrupt Tuning Varactors MA45430 Series Electrical Specifications @ 25C Minimum Breakdown Voltage (Vp) = 30 Volts at 10mA Maximum Reverse Current (I,W) = 100 nA at 24 Volts Lower capacitance values available upon request Maximum Ratings Reverse Voltage 30 V Forward Current 50 mA Total Power Dissipation ! 250 mW Total Junction Operating Temperature 55C to +150C Capacitance Minimum Storage Temperature ~55C to +150C Model Cra+10% | Capacitance Ratio | Minimum Note: Number (pF) Cro/Cr30 Qa 1) At 25C case temperature. Derate linearly to 0 mW at 150C. MA45436 4.7 4.5 1800 . . MA45437 5.6 45 1700 Ordering Information MA45438 6.8 4.5 1600 The part numbers shown are for single diodes. When MA45439 8.2 45 1500 ordering diodes in common cathode pairs add suffix CK. MA45440 10.0 45 1300 For example, MA45436CK specifies model number MA45441 12.0 46 4200 MA45436 as a common cathode pair. MA45442 15.0 46 1200 . . aaedaa feo te 100 Mounting Information . : , The diagram below indicates the recommended mounting MAaS+44 22.0 4.6 1000 pad configuration for the SOT-23 package. Solder paste con- MA45445 27.0 47 900 taining flux should be screened onto the pads to a thickness MA45446* 33.0 4.7 750 of 0.005 inches. The SOT-23 device is placed in position, MA45447" 39.0 47 500 firmly adhering to the solder paste. MA45448* 47.0 47 400 Test Va=4Vv Va = O/V_ = 30V Va=4V Permanent attachment is performed by a reflow soldering Conditions | f= 1 MHz f=1MHz f =50 MHz procedure. The tab temperature must not exceed 275C and Available as single diodes only. the body temperature must not exceed 250C. 400 _y| [. 0.8 (.030) t MIN. a + |-n---cr-HH + [-- 1 a 2 T T @ 1 1.8 (.070) 2 0.9 (.035)! 3 10 MIN LA a a, 0.95 1 Oo | (037) 1 a e < 19 (075) DIMENSIONS MILLIMETERS (INCHES) 1 0.1 1 10 100 INCHES MILLIMETERS Reverse Voltage (Volts) DIM. MIN. MAX. MIN. MAX. Capacitance vs. Reverse Voltage A _ 0.048 _ 122 Case Style B 0.008 0.20 287 Cc _ 0.040 _ 4.00 D 0.013 0.020 0.35 0.50 << F __ lA N E 0.003 0.006 0.08 0.15 o F 0.110 0.119 2.80 3.00 FA G 0.047 0.056 1.20 1.40 tt 4 ] 8 H 0.037 typical 0.95 typical 4 __ H 6 w}t kK J 0.075 typical 1.90 typical | x K 0.103 2.60 af L h | L 0.024 0.60 Leal t I. DIM GRADIENT at C M 10 max.! N 2. , 30 Note: 1. Applicable on all sides M/A-COM, Inc. a 43 South Ave, Burlington, MA 01803 a 800-366-2266 138