Also Offering RoHs Compliant Equivalent Parts MA4ST079 thru MA4ST083 Series V4 Surface Mount Hyperabrupt Wide-Band Tuning Varactors Features • • • • • • • • • Low Cost Very High Capacitance Ratio from 1 to 8 Volts Surface Mount Package High Quality Factor Useful for Battery Applications SPC Monitored Ion Implantation for Excellent C-V Repeatability Singles and Common Cathode Pairs Available in Tape and Reel Lead-Free (RoHs Compliant) equivalents available with 260°C reflow compatibility Description The MA4ST079 through MA4ST083 series of silicon hyperabrupt junction tuning varactors is produced with ion implantation and advanced epitaxial growth techniques. These diodes have thermal oxide passivation, and feature very high capacitance ratio and quality factor. They are well suited for use from the sub-HF through UHF frequency range. The standard capacitance tolerance is ±10%, with tighter tolerances available. Capacitance matching at one or more bias voltages is also available.These diodes are offered with standard Sn/Pb plating , as well as 100% matte Sn plating on our RoHs compliant equivalent devices. Applications The MA4ST079 through MA4ST083 series of hyperabrupt junction tuning varactors is suggested for usage where a large frequency change is required with only a small change in tuning voltage. This series is appropriate for usage in wide band voltagecontrolled oscillators and voltage controlled filters which require the largest rate of change of capacitance with voltage. The large change in capacitance from 1 to 8 volts makes them very attractive for battery operated or other systems with limited available Part Number RoHs Compliant Part Number1 MA4ST079 MAVR-000079-XXXXXX MA4ST080 MAVR-000080-XXXXXX MA4ST081 MAVR-000081-XXXXXX MA4ST082 MAVR-000082-XXXXXX MA4ST083 MAVR-000083-XXXXXX SOT-23 Absolute Maximum Ratings @ TA=+25 °C (Unless Otherwise Noted) 1 Parameter Absolute Maximum Reverse Voltage 12 V Forward Current 50 mA Power Dissipation 50mW @25°C Operating Temperature -65 °C to +125 °C Storage Temperature -65 °C to +125 °C 1. Operation of this device above any one of these parameters may cause permanent damage. Configurations 1 Suffix refers to package style , configuration and packaging requirements. Contact representative for complete part number information. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Also Offering RoHs Compliant Equivalent Parts MA4ST079 thru MA4ST083 Series V4 Surface Mount Hyperabrupt Wide-Band Tuning Varactors Electrical Specifications @ TA = +25 °C Breakdown Voltage @ IR = 10µA, Vb = 12 V Minimum Reverse Leakage Current @ VR =10V, IR = 100 nA Maximum Temperature Coefficient of Capacitance @VR=8 Volts, TCC=400ppm/°C Typical Ct (pF)2 Part Number Base 1 2 RoHs Compliant Part Number Base1 VR = 1.0V f=1MHz VR = 2.5V f=1MHz VR = 4.0V VR = 8.0V f=1MHz f=1MHz Typical Capacitance Ratio Typical Q Vr=1V/Vr=8V f=1MHz Vr=4V F=50MHz Min. Min Max Max Max Typ. Typ. MA4ST079 MAVR-000079-XXXXXX 87.4 48.7 59.5 27.3 11.8 9.1 80 MA4ST080 MAVR-000080-XXXXXX 40.0 22.3 27.3 13.1 5.5 8.9 150 MA4ST081 MAVR-000081-XXXXXX 16.2 9.1 11.1 5.2 2.4 8.5 300 MA4ST082 MAVR-000082-XXXXXX 11.5 6.6 8.0 3.8 1.8 8.2 350 MA4ST083 MAVR-000083-XXXXXX 7.9 4.5 5.5 2.6 1.3 7.8 450 The prefix defines package style, configuration and packaging information. Contact representative for complete part identification. Capacitance @ 1 MHz Typical Performance Curves Note : Performance curves also reflect that of the RoHs equivalent part 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Also Offering RoHs Compliant Equivalent Parts MA4ST079 thru MA4ST083 Series V4 Surface Mount Hyperabrupt Wide-Band Tuning Varactors Case Styles SOT-23 Case Style 287 SOT-23 (Case Style 287) DIM. F N A D B M G K L H E J C MIN. INCHES MAX. A B C D E F G H J K L 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. GRADIENT M N 10° max.1 2° . . .30° 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 Mounting Information The illustration 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- 0.007 inches. The plastic package is placed in position, firmly adhering to the solder paste. Permanent attachment is performed by a reflow soldering procedure during which the tab temperature does not exceed +275 °C and the body temperature does not exceed +250 °C, for standard models and +260 °C for the RoHS compliant devices. SOT-23 .030 min. 0.80 .090 2.2 .035 min. 0.90 .037 0.95 0.75 1.9 Dimenstions: inches mm Please refer to Application Note M538 for surface mounting instructions. 3 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.