Surface Mount Hyperabrupt Varactors MA4ST300 Series MA4ST400 Series Surface Mount Hyperabrupt 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 SOT-233 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 bias voltages is also available. Configurations TOP VIEW 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. 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. Absolute Maximum Rating @ 25°C Parameter Reverse Voltage Forward Current 1 Total Power Dissipation Junction Operating Temp. Storage Temperature Absolute Maximum 22 Volts 50 mA 250 mW -55°C to +125°C -55°C to +125°C 1. At 25°C case temperature. Derate linearly to zero at 150°C. 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. Surface Mount Hyperabrupt Varactors MA4ST300 Series Typical Performance Curves NOMINAL CHANGE in CAPACITANCE with TEMPERATURE TOTAL CAPACITANCE (pF) vs REVERSE VOLTAGE 400 TOTAL CAPACITANCE (pF) 100 TCC (PPM/C) 350 300 250 200 150 10 M A 4ST 409 M A 4ST 407 M A 4ST 405 M A 4ST 403 M A 4ST 401 1 0 2 4 6 8 10 12 14 16 18 20 1 R E V E R S E V O L T A G E ( V o lt s ) 10 R E V E R S E V O L T A G E (V o lts ) 100 Electrical Specifications @ TA = +25°C Minimum Breakdown Voltage (VB) = 22 Volts at 10 µA, Maximum Reverse (IR) = 100 nA at 20 Volts Total Minimum Model Capacitance Capacitance Number Maximum Q CT4 ± 10% Ratio CT2/CT20 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 F = 1 MHz F = 1 MHz Test Conditions F = 50 MHz VR = 4 Volts VR = 4 Volts Case Styles SOT-23 Case Style 287 SOT-23 (Case Style 287) F N A D B M G K L H E J C DIM. A B C D E F G H J K L INCHES MIN. MAX. 0.048 0.008 0.040 0.013 0.020 0.003 0.006 0.110 0.119 0.047 0.056 0.037 typical 0.075 typical 0.103 0.024 DIM. M N GRADIENT 1 10° max. 2° . . . 30° 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. MILLIMETERS MIN. MAX. 1.22 0.20 1.00 0.35 0.50 0.08 0.15 2.80 3.00 1.20 1.40 0.95 typical 1.90 typical 2.60 0.60 Note: 1. Applicable on all sides.